Merge from trunk commit 2102
Original message:
I was testing out a profile for pulseaudio and hit an issue where my
pulseaudio process was getting the firefox profile applied to it. This
is because in abstractions/ubuntu-browsers.d/multimedia the rule for
pulseaudio is /usr/bin/pulseaudio ixr; attached is a patch to change it
to Pixr, so as to use a global pulseaudio policy if it exists.
Signed-off-by: Steve Beattie <sbeattie@ubuntu.com>
Acked-by: John Johansen <john.johansen@canonical.com>
time formats. As this is causing failures on some systems
currently the only supported format is
<Month> ## hh:mm:ss
extend this to
<Month> ## hh:mm:ss(.ms)?((+|-)timezone)?
yyyy-mm-dd hh:mm:ss(.ms)?((+|-)timezone)?
yyyy-mm-ddThh:mm:ss(.ms)?((+|-)timezone)?
Merge from trunk commit 2077
Original message:
Subject: aa-decode test script v3
This patch adds a test script/driver for the aa-decode utility. The only
change from the previous versions is to support overriding the location
of the aa-decode to test via the APPARMOR_DECODE environment variable
and documenting the utils/ tests in the top level README.
The aa-decode test can be run directly from the commandline in the utils
directory like so:
test/test-aa-decode.py -v
Signed-off-by: Steve Beattie <sbeattie@ubuntu.com>
Acked-By: Christian Boltz <apparmor@cboltz.de>
Nominated-by: Steve Beattie <sbeattie@ubuntu.com>
Acked-By: Christian Boltz <apparmor@cboltz.de>
release. In this merge are the following trunk commits:
2050 - parser - network rules debugging statements
2057 - update ubuntu-browsers.d/java for IcedTea 7
2058 - let sanitized-helper also allow access to /usr/local
2059 - ubuntu-integration does not work properly with exo-open
2062 - support alternate ping install location in /usr
2064 - parser - update apparmor_parser man page
2065 - parser - correct apparmor_parser -N command privilege
2066 - parser - *just* the updated caching test message from this commit
2065.1.1 - profiles update fonts abstraction for new fontconfig paths
2065.1.{3,4} - profiles - Gnome applications are now quite interested
in reading /usr/share/poppler/cMap/**
2069 - profiles - update extras README with mail list info
2074 - tests - fix clone test on arm
2076 - parser tests - fix test driver for exec() failure
2079 - libapparmor - add pkgconfig support
2083 - parser tests - fix fine grained timestamp detection in caching tests
2090 - nvidia abstractions cleanups
2092 - update skype profile
2093 - add XCompose to abstractions/X
2096 - dnsmasq network-manager integration
Merge from trunk commit 2093
Original message:
Subject: profiles - add user's XCompose file to X abstraction
In testing the skype profile, I found access to my @{HOME}/.XCompose
was being rejected. This patch updates the X abstraction to take a
user's defined XCompose key shortcuts into account.
Signed-off-by: Steve Beattie <sbeattie@ubuntu.com>
Acked-By: Jamie Strandboge <jamie@canonical.com>
Nominated-by: Christian Boltz <apparmor@cboltz.de>
Acked-by: Steve Beattie <sbeattie@ubuntu.com>
Merge from trunk commit 2092 (w/ dropping the last modified timestamp
entirely)
Original message:
Subject: profiles - update skype profile
Author: Jamie Strandboge <jamie@canonical.com>
Bug-Ubuntu: https://launchpad.net/bugs/933440 Forwarded: yes
This is a very slightly updated version of the skype profile
update that Jamie Strandboge submitted, but did not get a review.
The only addition over the previously submitted version is rw access
to @{HOME}/.config/Skype/Skype.conf.
(This commit incorporates the additional @{HOME}/.kde4 change proposed
by Christian Boltz <apparmor@cboltz.de>)
Signed-off-by: Steve Beattie <sbeattie@ubuntu.com>
Acked-By: Jamie Strandboge <jamie@canonical.com>
Nominated-by: Christian Boltz <apparmor@cboltz.de>
Acked-by: Steve Beattie <sbeattie@ubuntu.com>
Merge from trunk commit 2090
Original message:
Subject: profiles - nvidia abstraction cleanups
This patch modifies the nvidia abstraction to add the livdpau wrapper
config file for nvidia workarounds. It also converts the /proc/
rules to use the @{PROC} tunable. And finally, it converts the
ubuntu-browsers.d/multimedia abstraction to use the nvidia abstraction.
Signed-off-by: Steve Beattie <sbeattie@ubuntu.com>
Acked-By: Jamie Strandboge <jamie@canonical.com>
Nominated-by: Christian Boltz <apparmor@cboltz.de>
Acked-by: Steve Beattie <sbeattie@ubuntu.com>
caching tests
Merge from trunk commit 2083
Original message:
This patch modifies the parser's caching test to more accurately detect
whether or not the filesystem has a fine enough timestamp resolution.
Occasionally even on filesystems like ext3, the two files' creation
dates would differ when created less than a second apart, which would
typically cause the 'Cache is used when cache is newer' test to fail
because the cached file would have the same timestamp as the profile.
The fix creates 10 files 0.1 seconds apart and ensures that all ten
have distinct timestamps.
(The occasional failure was caught in testing runs like
https://bugs.launchpad.net/qa-regression-testing/+bug/1087061/ )
Signed-off-by: Steve Beattie <sbeattie@ubuntu.com>
Acked-by: John Johansen <john.johansen@canonical.com>
Nominated-by: Steve Beattie <sbeattie@ubuntu.com>
Acked-by: John Johansen <john.johansen@canonical.com>
Merge from trunk commit 2079
Original message:
Given that we want to do more apparmor things in user space (dbus
mediation, file picker, etc.), making it easier for other source bases
to detect the presence of libapparmor would be beneficial. This patch
adds pkg-config support to the build infrastructure for libapparmor.
Signed-off-by: Steve Beattie <sbeattie@ubuntu.com>
Acked-by: Kees Cook <kees@ubuntu.com>
Nominated-by: Steve Beattie <sbeattie@ubuntu.com>
Acked-by: John Johansen <john.johansen@canonical.com>
Merge from trunk commit 2076
Original message:
Subject: two fixes to the parser's simple test driver
This patch fixes two issue with the simple test driver. The first is
that child exec that actually ran the parser was located inside the
eval statement. This meant that if the exec failed for some reason
(like the parser didn't exist), the child wouldn't actually die,
but would pop out of the eval and continue running through the loop
of test profiles (while the parent process does the same). This meant
that if the script ran on the full testsuite with a misconfiguration,
it would explode creating O(n^2) processes, where n is the number of
testcase files -- with over 25k testcases, that's a lot. The fis is to
lift the child exec outside the eval{}, then an exec() failure causes
the child process to die correctly.
The second fix is that several of the testcases were added with the
DESCRIPTION field added in lower case (i.e. #=Description blah blah).
This fix makes the regex that pulls out the description not be
case-sensitive.
Signed-off-by: Steve Beattie <sbeattie@ubuntu.com>
Acked-By: John Johansen <john.johansen@canonical.com>
Nominated-by: Steve Beattie <sbeattie@ubuntu.com>
Acked-by: John Johansen <john.johansen@canonical.com>
Merge from trunk commit 2074.
Original message:
apparmor: Fix clone test on quantal arm omap-4
It turns out that PAGE_SIZE isn't defined on all architectures.
This fixes a regression test failure happening on Ubuntu quantal
on the arm ti-omap4 architecture.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Nominated-by: Steve Beattie <sbeattie@ubuntu.com>
Acked-by: John Johansen <john.johansen@canonical.com>
Merge mailing list update from profiles/apparmor/profiles/extras/README
in trunk commit 2069.
Nominated-by: Christian Boltz <apparmor@cboltz.de>
Acked-by: Steve Beattie <sbeattie@ubuntu.com>
/usr/share/poppler/cMap/**
Merge from trunk commit 2065.1.3
Original message:
Gnome applications are now quite interested in reading
/usr/share/poppler/cMap/**. These files are included in the poppler-data
package on Ubuntu, and their 'r' denials create quite a bit of noise.
Apparently they are needed to display PDF documents containing CJK
characters with libpoppler. I added it to the gnome abstraction because
several applications not linked against poppler are consulting this
data.
Acked-By: Jamie Strandboge <jamie@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Nominated-by: Christian Boltz <apparmor@cboltz.de>
Acked-by: Steve Beattie <sbeattie@ubuntu.com>
Merge from just the parser/tst/caching.sh portion of trunk commit 2066.
Original message:
apparmor: abstract out the directory walking routine
The apparmor_parser has 3 different directory walking routines.
Abstract
them out and use a single common routine.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Nominated-by: Steve Beattie <sbeattie@ubuntu.com>
Acked-by: John Johansen <john.johansen@canonical.com>
Original message:
apparmor: correct apparmor_parser -N command privilege
Fix the apparmor_parsers -N command (which dumps the list of profile
names found in a policy file) to be available without privilege and
also make it be recognized as a command instead of an option so that
it can conflict with -a -r -R -S and -o.
Currently it can be specified with these commands but will cause the
parser to short circuit just dumping the names and not doing the actual
profile compile or load.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Nominated-by: Steve Beattie <sbeattie@ubuntu.com>
Acked-by: John Johansen <john.johansen@canonical.com>
Original message:
apparmor: update apparmor_parser man page
Rework and update the apparmor_parser man page. It reworks some of the
text but mostly just reorganizes the commands and options into logical
grouping to make it easier to sort out how the various commands and
options work.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Nominated-by: Steve Beattie <sbeattie@ubuntu.com>
Acked-by: John Johansen <john.johansen@canonical.com>
Original Message:
While integrating 3.4-rc1, I ran into a problem where network rules
weren't being processed. It ultimately boiled down to a kernel
issue but I found it useful to see what the parser thought it was
working with. Since the parser already has a debugging mode that
will show things like capabilities, it was an obvious extension to
add network rules.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Acked-by: John Johansen <john.johansen@canonical.com>
Nominated-by: Steve Beattie <sbeattie@ubuntu.com>
Acked-by: John Johansen <john.johansen@canonical.com>
Acked-By: John Johansen (up to r2072)
Acked-by: Steve Beattie <sbeattie@ubuntu.com> (including r2088)
In detail, the changes are (bzr log from trunk):
------------------------------------------------------------
revno: 2088
committer: Christian Boltz <apparmor@cboltz.de>
branch nick: apparmor
timestamp: Tue 2013-01-01 20:15:04 +0100
message:
speed up aa-decode by using a bash regex matching instead of calling egrep for each line.
Acked-by: Steve Beattie <sbeattie@ubuntu.com>
(Patch sent 2012-11-01, Acked-by from 2013-01-01)
------------------------------------------------------------
revno: 2072
committer: Christian Boltz <apparmor@cboltz.de>
branch nick: apparmor
timestamp: Tue 2012-10-16 00:19:49 +0200
message:
Fix aa-decode handling of stdin
Handling stdin was totally broken (= no output) with the current log
format because aa-decode expected name= to be the last entry in the
log line.
This patch for stdin handling
- fixes the pattern to match the current log format (name= is NOT the
last part in the log entry)
- uses bash replacement to avoid some sed calls (which also means the
script now needs an explicit "#!/bin/bash")
- prints decoded filenames in double instead of single quotes to be
consistent with filenames that were not encoded
- also prints lines that do not contain an encoded filename (instead of
grepping them away)
- replace tr calls by perl's uc() (also for non-stdin mode)
- also handle encoded profile names (introduced by Steve)
- don't fail if a file or profile name contains a '
In other words: you can pipe your audit.log through aa-decode, and the
only difference to the raw audit.log is that filenames are decoded.
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
------------------------------------------------------------
revno: 2068
committer: Christian Boltz <apparmor@cboltz.de>
branch nick: apparmor
timestamp: Mon 2012-09-17 23:55:28 +0200
message:
fix error handling in aa-decode
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Looks-Good-By: ;-) Seth Arnold <seth.arnold@gmail.com>
------------------------------------------------------------
chance to run before verifying it's current and future confinement
state. In testing the combined sleeps added roughly a second to
onexec.sh's total time on relatively reasonable hardware.
Signed-off-by: Steve Beattie <sbeattie@ubuntu.com>
Acked-By: John Johansen <john.johansen@canonical.com> (via IRC)
Hats/children profiles are used.
the matchflags in the dfa backend are not getting properly reset, which
results in a previously processed profiles match flags being used. This is
not a problem for most permissions but can result in x conflict errors.
Note: this should not result in profiles with the wrong x transitions loaded
as it causes compilation to file with an x conflict.
This is a minimal patch targeted at the 2.8 release. As such I have just
updated the delete_ruleset routine to clear the flags as it is already
being properly called for every rule set.
Apparmor 2.9/3.0 will have a different approach where it is not possible
to reuse the flags.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Steve Beattie <sbeattie@ubuntu.com>
- It failed to remove coredump files named "core"
- It failed to properly detect "core.<pid>" files
- And it would fail if the coredump_pattern had been modified to
a different location.
This lead one of the tests to report it was passing when it
wasn't because it was detecting the previous tests core file.
- Fix the test to set the coredump_pattern, to dump into the
tmpdir used for the test.
- Make it so it will only detect the core file for the pid of
the last test run.
- And extend the test to have a couple of extra test cases.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
Add the ability to clear out the binary profile cache. This removes the
need to have a separate script to handle the logic of checking and
removing the cache if it is out of date.
The parser already does all the checking to determine cache validity
so it makes sense to allow the parser to clear out inconsistent cache
when it has been instructed to update the cache.
Signed-off-by: John Johnansen <john.johansen@canonical.com>
serious flaw. The test for the network flag was being applied against both
the kernel flags and the cache flags. This means that if either the kernel
or the cache did not have the flag set then network mediation would be
turned off.
Thus if a kernel was booted without the flag, and a cache was generated
based on that kernel and then the system was rebooted into a kernel with
the network flag present, the parser on generating the new policy would
detect the old cache did not support network and turn it off for the
new policy as well.
This can be fixed by either removing the old cache first or regenerating
the cache twice. As the first generation will write that networking is
supported in the cache (even though the policy will have it disabled), and
the second generation will generate the correct policy.
The following patch moves the test so that it is only applied to the kernel
flags set.
Signed-off-by: John Johansen <john.johansen@canonical.com>
compatibility interface. Previously it was assuming that if the compatibility
interface was present that network rules where also present, this is not
necessarily true and causes apparmor to break when only the compatibility
patch is applied.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
- make table of contents, footnotes etc. clickable hyperlinks
- use timestamp of techdoc.tex (instead of build time) as creationdate
in the PDF metadata
- don't include build date on first page of the PDF
- make clean:
- delete techdoc.out (created by pdftex)
- fix deletion of techdoc.txt (was techdo_r_.txt)
The initial target was to get reproduceable PDF builds (therefore the
timestamp-related changes), the other things came up during discussing
this patch with David Haller.
The only remaining difference in the PDF from build to build is the /ID
line. This line can't be controlled in pdflatex and is now filtered
out by build-compare in the openSUSE build service (bnc#760867).
Credits go to David Haller for writing large parts of this patch
(but he didn't notice the techdo_r_.txt ;-)
Signed-Off-By: Christian Boltz <apparmor@cboltz.de>
* the application, library, documentation and installation script
* the initial templates and policy groups. This will undoubtedly need
refinement as we get feedback from users. Initial policy is based on Ubuntu's
Application Review Board (ARB) requirements[2].
* tests for the library
* Makefile integration
Templates are stored in /usr/share/apparmor/easyprof/templates and policy
groups in /usr/share/apparmor/easyprof/policygroups. This can be adjusted via
/etc/apparmor/easyprof.conf.
The aa-easyprof.pod has complete documentation on usage with some
additional information in utils/easyprof/README (mostly duplicated
here).
Testing can be performed in a number of ways:
$ cd utils ; make check # runs unit tests and pyflakes
Unit tests manually:
$ ./test/test-aa-easyprof.py
In source manual testing:
$ ./aa-easyprof --templates-dir=./easyprof/templates \
--policy-groups-dir=./easyprof/policygroups \
... \
/opt/foo/bin/foo
Post-install manual testing:
$ make DESTDIR=/tmp/test PERLDIR=/tmp/test/usr/share/perl5/Immunix install
$ cd /tmp/test
$ PYTHONPATH=/tmp/test/usr/local/.../dist-packages ./usr/bin/aa-easyprof \
--templates-dir=/tmp/test/usr/share/apparmor/easyprof/templates \
--policy-groups-dir=/tmp/test/usr/share/apparmor/easyprof/policygroups \
/opt/bin/foo
(you may also adjust /tmp/test/etc/apparmor/easyprof.conf to avoid
specifying --templates-dir and --policy-groups-dir).
Committing this now based on conversation with John and Steve.
Acked-By: Jamie Strandboge <jamie@canonical.com>
the chromium and chrome sandboxes are setuid root, they only link in limited
libraries so glibc's secure execution should be enough to not require the
santized_helper (ie, LD_PRELOAD will only use standard system paths (man
ld.so)). Also allow some paths in /opt for Chrome.
Ubuntu-Bug: https://launchpad.net/bugs/964510
Acked-By: Jamie Strandboge <jamie@canonical.com>
sanitized_helper. For now this only allows software-center scripts in
/usr/share, but we may need to increase what is allowed in /usr/share if more
things are denied when they shouldn't be.
Ubuntu-Bug: https://launchpad.net/bugs/972367
Acked-By: Jamie Strandboge <jamie@canonical.com>
$CPPFLAGS. Additionally, do not repeat compiler flags for automake
targets that already include them, and pass more flags to the Perl build.
Signed-off-by: Kees Cook <kees@ubuntu.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
When writing out a profile, aa-logprof incorrectly converts PUx execute
permission modes to the syntactically invalid UPx mode, because the
function that converts the internal representation of permissions to
a string emits the U(nconfined) mode bit before the P bit.
This patch corrects this by reordering the way the exec permissions
are emitted, so that P and C modes come before U and i. Based on
http://wiki.apparmor.net/index.php/AppArmor_Core_Policy_Reference#Execute_rules
this should emit the modes correctly in all combined exec modes.
Other approaches to fixing this would require adjusting the data
structure that contains the permission modes, resulting in a more
invasive patch.
Bug: https://launchpad.net/bugs/982619
access to /proc/*/attr/{current,exec}, the onexec testcase that
attempted to do things without explicit access granted to
/proc/*/attr/exec in the testsuite passes instead of fails. This commit
takes that into account.
http://bugs.launchpad.net/bugs/979135
Currently a change_profile rule does not grant access to the
/proc/<pid>/attr/{current,exec} interfaces that are needed to perform
a change_profile or change_onexec, requiring that an explicit rule allowing
access to the interface be granted.
Make it so change_profile implies the necessary
/proc/@{PID}/attr/{current,exec} w,
rule just like the presence of hats does for change_hat
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
This fix is needed for the userspace portion of both
BugLink: http://bugs.launchpad.net/bugs/963756
BugLink: http://bugs.launchpad.net/bugs/978038
change_onexec fails for profiles that don't have an attachment specification
eg. unconfined
This is because change_onexec goes through 2 permission checks. The first
at the api call point, which is a straight match of the profile name
eg.
/bin/foo
unconfined
and a second test at exec time, tying the profile to change to to the
exec. This allows restricting the transition to specific execs. This
is mapped as a two entry check
/executable/name\x00profile_name
where the executable name must be marked with the change_onexec permission
and the subsequent profile name as well.
The previous "fix" only covered adding onexec to executable names and
also works for the initial change_onexec request when the profile is
an executable.
However it does not fix the case for when the profile being transitioned
to is not an executable.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
This extends the auto-profile generation so that it can take profiles formated
in standard profile language augemented by a few special variables for
the automatically generated rules. This will all extended the regression
tests in ways that are not currently supported, because mkprofile format
does not match of the profile language.
the special apparmorish variables are
@{gen_elf name} - generate rules for elf binaries
@{gen_bin name} - generate rules for a binary
@{gen_def} - generate default rules
@{gen name} - do @{gen_def} @{gen_bin name}
To generate a profile you do
genprofile --stdin <<EOF
/profile/name {
@{gen /profile/name}
}
EOF
eg. to generate the equivalent of
genprofile
you would do
genprofile --stdin <<EOF
$test {
@{gen $test}
}
EOF
and the equiv of
genprofile $file:rw
would be
genprofile --stdin <<EOF
$test {
@{gen $test}
$file rw,
}
while it takes a little more to generate a base profile than the old syntax, it
use the actual profile language (augmented with the special variables), it is a
lot more flexible, and a lot easier to expand when new rule types are added.
eg. of something not possible with the current auto generation
Generate a profile with a child profile and hat and a trailing profile
genprofile --stdin <<EOF
$test {
@{gen $test}
profile $bin/open {
@{gen $bin/open}
}
^hatfoo {
$file rw,
}
}
profile $bin/exec {
@{gen $bin/exec}
}
EOF
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
manpages (and adjust it so that it's one rule instead of eight). It
also fixes the above problem and a similar problem in the aa-exec
manpage.
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Acked-By: Jamie Strandboge <jamie@canonical.com>
Bugs: https://bugs.launchpad.net/ubuntu/+source/apparmor/+bug/800826https://bugzilla.novell.com/show_bug.cgi?id=755923
This patch modifies the libapparmor log parsing code to add support
for the additional ip address and port keywords that can occur in
network rejection rules. The laddr and faddr keywords stand for local
address and foreign address respectively.
The regex used to match an ip address is not very strict, to hopefully
catch the formats that the kernel emits for ipv6 addresses; however,
because this is in a context triggered by the addr keywords, it should
not over-eagerly consume non-ip addresses. Said addresses are returned
as strings in the struct to be processed by the calling application.
Bug: https://launchpad.net/bugs/800826
This patch calls autodep on the 'exec'ed binary when the user selects
to place that execution in a child profile. Previously, logprof would
create an entirely empty child profile in complain mode (this fix
still leaves the child profile in complain mode).
This patch fixes a couple of issue with autodep:
1) The initial profile construction had not been adjusted to include
the 'allow' or 'deny' hash prefixing the path elements. This
fixes it by eliminating the path portion entirely and pushing
the path based accesses to the later analysis section of code.
2) the mode of the original binary was accidentally getting reset
to 0, when it was intended to initialize the audit field to 0.
Bug #963756
The kernel has an extended test for change_profile when used with
onexec, that allows it to only work against set executables.
The parser is not correctly mapping change_profile for this test
update the mapping so change_onexec will work when confined.
Note: the parser does not currently support the extended syntax
that the kernel test allows for, this just enables it to work
for the generic case.
Signed-off-by: John Johansen <john.johansen@canonical.com>
The capabilities tests where failing in the changehat_wrapper test. This was because
they could not the changehat_wrapper sub executable, which trying to exec a binary
in the tmpdir.
Specifically if the test was for syscall_ptrace. It would generate a profile with
a hat for ^syscall_ptrace and attempt to execute ./syscall_ptrace. However this
was failing in some situations, including when trying to debug from the tmpdir,
as the syscall_XXX binary is no longer local.
Instead use the fully qualified path for the hat name, and the exec path.
Signed-off-by: John Johansen <john.johansen@canonical.com>
The retaining of the tmpdir is used during debugging of test failures, but currently
when a test fails, the next test is run overwritting the previous tmpdir value. This
is a problem even when manually running individual test shell scripts if the failure
is not the last test in the script.
Instead cause testing to about when retaintmpdir is true, which will cover the debugging
needs for the majority of failure cases.
Signed-off-by: John Johansen <john.johansen@canonical.com>
This patch adds a make install target for the generated apparmor.vim
file, installing by default into /usr/share/apparmor based on IRC
discussions; alternate suggestions welcome. (Installing directly
into the vim syntax tree is difficult as the system path by default
contains the vim version number.)
This patch replaces the apparmor.vim generating script with a python
version that eliminates the need for using the replace tool from the
mysql-server package. It makes use of the automatically generated
lists of capabilities and network protocols provided by the build
infrastructure. I did not capture all the notes and TODOs that
Christian had in the shell script; I can do so if desired.
It also hooks the generation of the apparmor.vim file into the utils/
build and clean stages.
This patch adds several missing capabilities to the utils/
severity.db file as detected by the newly added make check target,
along with corresponding severity levels that I believe :re appropriate
(discussion welcome):
CAP_MAC_ADMIN 10
CAP_MAC_OVERRIDE 10
CAP_SETFCAP 9
CAP_SYSLOG 8
CAP_WAKE_ALARM 8
The latter two are undocumented in the capabilities(7) man page
provided in Ubuntu 12.04; the syslog one is the separation out of
accessing the dmesg buffer from CAP_SYSADMIN, and the CAP_WAKE_ALARM
allows setting alarms that would wake a system from a suspended state,
if my reading is correct.
This also fixes a trailing whitespace on CAP_CHOWN, moves
CAP_DAC_READ_SEARCH to the end of the section of capabilities it's
in due to its lower priority level (7).
capabilities
This patch adds a new make target, check_severity_db, to the
utils/Makefile. It greps the severity.db for the presence of each
capability, as computed by the newly abstracted out variable in
common/Make.rules, and issues a build time error if it finds any
missing.
It also silences the check targets, so that only the output from them
will be emitted.
This patch abstracts out the generation of the lists of capabilities
and network protocol names to the common Make.rules file that is
included in most locations in the build tree, to allow it to be
re-used in the utils/ tree and possibly elsewhere.
It provides the lists in both make variables and as make targets.
It also sorts the resulting lists, which causes it to output differently
than the before case. I did confirm that the results for the generated
files used in the parser build were the same after taking the sorting
into account.
aa_getprocattr is returning the size of the buffer not the size of the
data read that it is supposed to return. Also update the man page to
reflect the return value as documented in the functions, and update
the test cases to check the return value.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Steve Beattie <sbeattie@ubuntu.com>
While aa_getprocattr does return the documented error code on failure
the **buf and **mode parameters can point into the buffer that was
allocated and then discarded on failure.
Set them to null on failure so that even if the error code is ignored
they do not point to heap data.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Remount should not be screening off the set of flags it is. They are
the set of flags that the kernel is masking out for make_type and
should not be used on remount. Instead just screen off the other cmds
that can have their own rules generated.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
The deny information is not used as valid accept state information,
so remove it from the is_null test. This does not change the dfa
generated but does result in the dumped information changing,
as states that don't have any accept information are no longer
reported as accepting. This is what changes the number of states
reported in the minimize tests.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
The same mappings routine had two bugs in it, that in practice haven't
manifested because of partition ordering during minimization. The
result is that some states may fail comparison and split, resulting
in them not being eliminated when they could be.
The first is that direct comparison to the nonmatching state should
not be done as it is a candiate for elimination, instead its partion
should be compared against. This simplifies the first test
The other error is the comparison
if (rep->otherwise != nonmatching)
again this is wrong because nomatching should not be directly
compared against. And again can result in the current rep->otherwise
not being eliminated/replaced by the partion. Again resulting in
extra trap states.
These tests where original done the way they were because
->otherwise could be null, which was used to represent nonmatching.
The code was cleaned up a while ago to remove this, ->otherwise is
always a valid pointer now.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Also make sure the perms method properly switches to hex and back to dec
as some of the previous perm dump code did not.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
The aa-exec command can be used to launch an application under a specified
confinement, which may be different for what regular profile attachment
would apply.
Signed-off-by: John Johansen <john.johansen@canonical.com>
The changes are around how user data is handled.
1. permissions are mapped before data is matched
2. If data is to be mapped a AA_CONT_MATCH flag is set in the permissions
which allows data matching to continue.
3. If data auditing is to occur the AA_AUDIT_MNT_DATA flag is set
This allows better control over matching and auditing of data which can
be binary and should not be matched or audited
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
file, should grant access to all files paths on the system but it does
not currently allow access to /
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Rename the pivotroot rule to pivot_root to match the command and the fn
and fix it to support named transition correctly leveraging the parsing
action used for exec transitions.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Currently the backend doesn't like it (blows up) when the a vector entry is
empty. For the case where no flags match build_mnt_flags generates an
alternation of an impossible entry and nothing
(impossible|)
This provides the effect of a null entry without having an empty vector
entry. Unfortunately the impossible entry is not correct.
Note: how this is done needs to be changed and fixed in the next release
this is just a minimal patch to get it working for 2.8
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
When generating the flag set the parser was not generating the complete
set when flags where not consecutive. This is because the len value
was not being reset for each flag considered, so once it was set for
a flag, then the next flag would have to be set to reset it else the
output string was still incremented by the old len value.
Eg.
echo "/t { mount options=rbind, }" | apparmor_parser -QT -D rule-exprs
results in
rule: \x07[^\000]*\x00[^\000]*\x00[^\000]*\x00\x0d ->
however \x0d only covers the bind and not the recursive flag
This is fixed by adding a continue to the flags generation loop for the
else case.
resulting the dump from above generating
rule: \x07[^\000]*\x00[^\000]*\x00[^\000]*\x00\x0d\x0f ->
\x0d\x0f covers both of the required flags
Also fix the flags output to allow for the allow any flags case. This
was being screened out. By masking the flags even when no flags where
specified.
this results in a difference of
echo "/t { mount, }" | apparmor_parser -QT -D rule-exprs
rule: \x07[^\000]*\x00[^\000]*\x00[^\000]*\x00(\x01|)(\x02|)(\x03|)(\x04|)(\x05|)\x00[^\000]*
becoming
\x07[^\000]*\x00[^\000]*\x00[^\000]*\x00[^\000]*\x00[^\000]*
which is simplified and covers all permissions vs. the first rule output
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
This commit causes policy problems because we do not have chroot rules
and policy extension to support it.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
the cache test is failing because it assumes that kernel features are
stored in a file instead of a directory
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
On newer kernels the features directory causes the creation of a
cache/.feature file that contains newline characters. This causes the
feature comparison to fail, because get_flags_string() uses fgets
which stop reading in the feature file after the first newline.
This caches the features comparision to compare a single line of the
file against the full kernel feature directory resulting in caching
failure.
Worse this also means the cache won't get updated as the parser doesn't
change what set gets caches after the .feature file gets created.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
file,
was not given the correct permissions. It was only being given the owner
set of permissions. This would result in rejects when trying look at
files owned by other users
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
There are some rare occassions, when lots of alternations are used that
tree simplification can result in an expression of
(E | (E | E)) or (E . (E . E)) where E is the epsnode
both of these expressions will lead to an inifinite loop in normalize_tree
as the epsnode test
if ((&epsnode == t->child[dir]) &&
(&epsnode != t->child[!dir]) &&
dynamic_cast<TwoChildNode *>(t)) {
and the tree node rotation test
} else if ((dynamic_cast<AltNode *>(t) &&
dynamic_cast<AltNode *>(t->child[dir])) ||
(dynamic_cast<CatNode *>(t) &&
dynamic_cast<CatNode *>(t->child[dir]))) {
end up undoing each others work, ie.
eps flip rotate
(E | (E | E)) --------> ((E | E) | E) -------> (E | (E | E))
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Minimization was failing because it was too agressive. It was minimizing
as if there was only 1 accept condition. This allowed it to remove more
states but at the cost of loosing unique permission sets, they where
being combined into single commulative perms. This means that audit,
deny, xtrans, ... info on one path would be applied to all other paths
that it was combined with during minimization.
This means that we need to retain the unique accept states, not allowing
them to be combined into a single state. To do this we put each unique
permission set into its own partition at the start of minimization.
The states within a partition have the same permissions and can be combined
within the other states in the partition as the loss of unique path
information is will not result in a conflict.
This is similar to what perm hashing used to do but deny information is
still being correctly applied and carried.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
The in x intersection consistency test for minimization was failing because
it was screening off the AA_MAY_EXEC permission before passing the exec
information to the consistency test fn. This resulted in the consistency
test fn not testing the consistency because it treated the permission set
as not having x permissions.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Make them report a hex value strings instead of the default C++
\vvvvv
Make them consistent,
- Dump to report the default transition and what isn't transitioned
on it.
Signed-off-by: John Johansen <john.johansen@canonical.com>
The permission reporting was not reporting the full set of permission
flags and was inconsistent between the dump routines.
Report permissions as the quad (allow/deny/audit/quiet) in hex.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Fix the transitions states output so that they output the state label
instead of the state address. That is
{1} -> 0x10831a0: /
now becomes
{1} -> {2}: /
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
The pcre parser in the dfa backend is not correctly converting escaped
hex string like
\0x0d
This is the minimal patch to fix, and we should investigate just using
the C/C++ conversion routines here.
I also I nominated for the 2.7 series.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Seth Arnold <seth.arnold@gmail.com>
Add the ability to control mounting and unmounting
The basic form of the rules are.
[audit] [deny] mount [conds]* [device] [ -> [conds] path],
[audit] [deny] remount [conds]* [path],
[audit] [deny] umount [conds]* [path],
[audit] [deny] pivotroot [oldroot=<value>] <path> -> <profile>
remount is just a short cut for mount options=remount
where [conds] can be
fstype=<expr>
options=<expr>
conds follow the extended conditional syntax of allowing either:
* a single value after the equals, which has the same character range as
regular IDS (ie most anything but it can't be terminated with a , (comma)
and if spaces or other characters are needed it can be quoted
eg.
options=foo
options = foo
options="foo bar"
* a list of values after the equals, the list of values is enclosed within
parenthesis () and its has a slightly reduced character set but again
elements can be quoted.
the separation between elements is whitespace and commas.
eg.
options=(foo bar)
options=(foo, bar)
options=(foo , bar)
options=(foo,bar)
The rules are flexible and follow a similar pattern as network, capability,
etc.
mount, # allow all mounts, but not umount or pivotroot
mount fstype=procfs, # allow mounting procfs anywhere
mount options=(bind, ro) /foo -> /bar, # readonly bind mount
mount /dev/sda -> /mnt,
mount /dev/sd** -> /mnt/**,
mount fstype=overlayfs options=(rw,upperdir=/tmp/upper/,lowerdir=/) overlay -> /mnt/
umount,
umount /m*,
Currently variables and regexs are are supported on the device and mount
point. ie.
mount <devince> -> <mount point>,
Regexes are supported in fstype and options. The options have a further
caveat that regexs only work if the option is fs specific option.
eg. options=(upperdir=/tmp/*,lowerdir=/)
regex's will not currently work against the standard options like ro, rw
nosuid
Conditionals (fstype) can only be applied to the device (source) at this
time and will be disregarded in situations where the mount is manipulating
an existing mount (bind, remount).
Options can be specified multiple times
mount option=rw option=(nosuid,upperdir=/foo),
and will be combined together into a single set of values
The ordering of the standard mount options (rw,ro, ...) does not matter
but the ordering of fs specific options does.
Specifying that the value of a particular option does not matter can be
acheived by providing both the positive and negative forms of and option
option=(rw,ro) options=(suid,nosuid)
For the fs specific options specifying that a particular value does not
matter is achieve using a regex with alternations.
Improvements to the syntax and order restrictions are planned for the
future.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Newer versions of AppArmor use a features directory instead of a file
update the parser to use this to determine features and match string
This is just a first pass at this to get things up quickly. A much
more comprehensive rework that can parse and use the full information
set is needed.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Due to changes in path looks and the work going forward default profiles
to resolve relative to the chroot instead of the namespace.
This will only affect profiles that are used on tasks within a chroot.
For now it will be possible to get the old default namespace relative
behavior by passing the namespace_relative flag to the profile
eg.
profile /example (namespace_relative) { .. }
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
policydb is the new matching format, that combines the matching portions
of different rules into a single dfa/hfa. This patch only lays some ground
work it does not add encoding of any rules into the policydb
Signed-off-by: John Johansen <john.johansen@canonical.com>
value_list can be reused by conditionals and list values, so pull it out
and abstract it some more.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
Add the optional 'file' keyword to the language/grammer. The main reason
for doing this is to support false token injection. Which is needed
to move towards the parser being broken out into an api that can be
used to parse individual rule types, separate from parsing the whole file.
Since we are adding the token to the grammar expose it to userspace with
the 'file' keyword. While not needed it helps bring consistency, as all
the other rule types start with a keyword (capability, network, rlimit, ...).
Also allow the bare keyword to be used to represent allowing all file
operations, just as with network and capability. Domain transitions are
defaulted to ix. Thus
file,
is equivalent to
/** rwlkmix,
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
The ability to set capabilities from a profile has been removed from the
kernel for several releases. Remove it from the parser as well.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
Allow the capability rule to be bare to represent all capabilities similar
to how network, and other rule types work.
capability,
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
Currently the parser can not directly influence the lexer output. This
limits the grammar and also how the parser can be invoked. Allow the
parser to pass the next TOKEN that the lexer will return.
This is has two uses: It allows us to trick the bison parser into having
multiple start symbols, allowing us to say invoke the parser on an
individual network or file rule. It also allows the semantic analysis of
the parser to change the language recognized. This can be leveraged to
overcome some of the limitation of bison's LALR parse generator.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
mode strings overlap with other potential commands, or strings, and as
currently written can be match as a leading substring of an ID. Eliminate
the leading substring case by requiring that for a mode string to be
recognized it must be terminated by whitespace, eol, eof, or
comma (end of rule).
The other cases where modes string overlap are ambiguous and the ID should
be quoted to remove the ambiguity.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
extended conditionals use a syntax of
cond=value
cond=(value1 value2)
cond=(value1,value2)
where the comma is optional and supported as such because the
flags syntax used them
The mount patch extends, and improves on this patch, the changes probably
should have been separated out but ...
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>
jj@ortho:~/apparmor/aa-test/parser$ guilt header
Convert FLAGS_MODE start condition to a generic list of values start cond
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
ID and POST_VAR_ID define a set of characters that is reused, pull this
out to avoid making mistakes when updating the character set.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
The removal of deny information is a one way operation, that can result
in a smaller dfa, but also results in a dfa that should not be used in
future operations because the deny rules from the precomputed dfa would
not get applied.
For now default filtering out of deny information to off, as it takes
extra time and seldom results in further state reduction.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
Previously permission information was thrown away early and permissions
where packed to their CHFA form at the start of DFA construction. Because
of this permissions hashing to setup the initial DFA partitions was
required as x transition conflicts, etc. could not be resolved.
Move the mapping of permissions to CHFA construction, and track the full
permission set through DFA construction. This allows removal of the
perm_hashing hack, which prevented a full minimization from happening
in some DFAs. It also could result in x conflicts not being correctly
detected, and deny rules not being fully applied in some situations.
Eg.
pre full minimization
Created dfa: states 33451
Minimized dfa: final partitions 17033
with full minimization
Created dfa: states 33451
Minimized dfa: final partitions 9550
Dfa minimization no states removed: partitions 9550
The tracking of deny rules through to the completed DFA construction creates
a new class of states. That is states that are marked as being accepting
(carry permission information) but infact are non-accepting as they
only carry deny information. We add a second minimization pass where such
states have their permission information cleared and are thus moved into the
non-accepting partion.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
Delay the packing of audit and quiet permissions until chfa construction,
and track deny and quiet perms during DFA construction, so that we will
be able to do full minimization. Also delay the packing of audit and
Signed-off-by: John Johansen <john.johansen@canonical.com>
From: Kees Cook <kees@ubuntu.com>
This is a trivial manpage fix that makes pod2man stop yelling at me.
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
From: Steve Beattie <sbeattie@ubuntu.com>
This patch adds --stderr to pod2man to make it report errors, as well as
fixes a few other minor text issues I noticed.
Acked-by: Kees Cook <kees@ubuntu.com>
capabilities). The rule will be marked in the "dangerous capability"
color.
Additionally, the patch removes the (already commented out) code for
"set capability".
Acked-by: Kees Cook <kees@ubuntu.com>
Description: glibc's __get_nprocs() now checks /sys/devices/system/cpu/online
in addition to /proc/stat for the number of processors. This is used in the
_SC_NPROCESSORS_ONLN implementation, a part of sysconf. This was introduced in
upstream glibc commit:
84e2a551a7
Bug-Ubuntu: https://launchpad.net/bugs/929531
Acked-By: Jamie Strandboge <jamie@canonical.com>
Acked-By: Christian Boltz <apparmor@cboltz.de>
(At least) openSUSE uses ~/.kde4 to store KDE4 settings.
This patch changes ~/.kde/ to ~/.kde{,4} in all abstractions.
The patch is mostly from Velery Valery, I only fixed a merge conflict
and added the kmail{,2} part in private-files-strict.
References: https://bugzilla.novell.com/show_bug.cgi?id=741592
Acked-By: Steve Beattie <sbeattie@ubuntu.com> for both trunk and 2.7.
A bug in Ubuntu reported that the aspell abstraction does
not allow write access to the user customizable dictionaries, the
personal dictionary (~/.aspell.$LANG.pws) and the personal replacement
dictionary (~/.aspell.$LANG.prepl). It also adjusts the abstraction
to add the owner modifier to the personal dictionaries.
Signed-off-by: Steve Beattie <sbeattie@ubuntu.com>
Acked-by: John Johansen <john.johansen@canonical.com>
Bug: https://launchpad.net/bugs/917859
it is needed by pretty much all of the browser abstractions. aa-update-browser
unconditionally adds the plugins-common abstraction, so this should be
sufficient.
properly quote the _known variable (set when the tests are marked as
expected failures) when the expectation was that the testcase would
produce a corefile. This would result in a failed testcase reporting
XFAIL incorrectly.
Signed-off-by: Steve Beattie <sbeattie@ubuntu.com>
Acked-by: John Johansen <john.johansen@canonical.com>
suffix of an image= flag, as it's no longer needed. It also eliminates
code that emitted the permissions based on the result of the parse.
Signed-off-by: Steve Beattie <sbeattie@ubuntu.com>
Acked-by: John Johansen@canonical.com
add 'rix' permissions on executable images (but still auto-generate
ldd dependencies), for use when specifying alternate permissions
on executables.
Where appropriate, it also converts a few testcases to make use of
the option.
Signed-off-by: Steve Beattie <sbeattie@ubuntu.com>
Acked-by: John Johansen <john.johansen@canonical.com>
generated profile and have the ldd auto-generation of rules occur on
it. It also kills all testcase usage of $dynlibs, which had stopped
being generated by prologue.inc in a prior patch.
Signed-off-by: Steve Beattie <sbeattie@ubuntu.com>
Acked-by: John Johansen <john.johansen@canonical.com>
mkprofile.pl helper and take the convoluted code out of the bash
prologue.inc. It also detects if the binary is a script and performs
ldd analysis on the interpreter.
Signed-off-by: Steve Beattie <sbeattie@ubuntu.com>
Acked-by: John Johansen <john.johansen@canonical.com>
their purpose a little more accurately; renames the dump_flags to
emit_flags for the same reason, and also adds a modicum a function
prototype information to the function declarations.
Signed-off-by: Steve Beattie <sbeattie@ubuntu.com>
Acked-by: John Johansen <john.johansen@canonical.com>
Profile loads when specifying namespaces currently conflict with caching.
If the profile (ignoring the specified namespace) is in the cache, then
the cached profile will be loaded, replacing the profile in the current
namespace instead of loading the profile to the new namespace.
Fix this by disabling caching when a namespace is specified, forcing the
profile to be compiled.
NOTE: this will not affect profiles loaded from within a namespace using
either the same or a separate directory as the base to load a namespac
from. This only affects loading profiles directly into a child
namespace.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
Currently the cache location is fixed and links are needed to move it.
Add an option that can be set in the apparmor_parser.conf file so distros
can locate the cache where ever makes sense for them.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
The behavior for revalidation/revocation of open files has changed
with the current kernel code, resulting in these tests being reported
as failing even though they are showing expected behavior.
Under the current kernel module this form of revalidation/revocation
can not be tested reliably, so just changing the expected result is
not enough, completely disable the tests for now.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Lenient profile that is intended to be used when 'Ux' is desired but
does not provide enough environment sanitizing. This effectively is an
open profile that blacklists certain known dangerous files and also
does not allow any capabilities. For example, it will not allow 'm' on files
owned be the user invoking the program. While this provides some additional
protection, please use with care as applications running under this profile
are effectively running without any AppArmor protection. Use this profile
only if the process absolutely must be run (effectively) unconfined.
Limitations:
1. This does not work for root owned processes, because of the way we use
owner matching in the sanitized helper. We could do a better job with
this to support root, but it would make the policy harder to understand
and going unconfined as root is not desirable anyway.
2. For this sanitized_helper to work, the program running in the sanitized
environment must open symlinks directly in order for AppArmor to mediate
it. This is confirmed to work with:
- compiled code which can load shared libraries
- python imports
It is known not to work with:
- perl includes
3. Going forward it might be useful to try sanitizing ruby and java
Use at your own risk. This profile was developed as an interim workaround for
LP: #851986 until AppArmor implements proper environment filtering.
Acked-by: Jamie Strandboge <jamie@canonical.com>
Adjust ubuntu abstractions to use sanitized_helper instead of (P)Ux.
Acked-by: Jamie Strandboge <jamie@canonical.com>
Update launchpad-integration to use a sanitized helper in a similar manner
as that in ubuntu-helpers.
Acked-by: Jamie Strandboge <jamie@canonical.com>
creating owner writes on things like ~/.cache and ~/.config
Acked-by: Jamie Strandboge <jamie@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
add machine script = /usr/sbin/smbldap-useradd -t 5 -w "%u"
smbd obviously needs x permissions for smbldap-useradd.
The commit also adds a new profile for usr.sbin.smbldap-useradd (based on
the audit.log from Alexis Pellicier).
Additionally, I moved the "/etc/samba/* rwk" rule next to the other
/etc-related rules in the smbd profile.
References: https://bugzilla.novell.com/show_bug.cgi?id=738041
Lenient profile that is intended to be used when 'Ux' is desired but
does not provide enough environment sanitizing. This effectively is an
open profile that blacklists certain known dangerous files and also
does not allow any capabilities. For example, it will not allow 'm' on files
owned be the user invoking the program. While this provides some additional
protection, please use with care as applications running under this profile
are effectively running without any AppArmor protection. Use this profile
only if the process absolutely must be run (effectively) unconfined.
Limitations:
1. This does not work for root owned processes, because of the way we use
owner matching in the sanitized helper. We could do a better job with
this to support root, but it would make the policy harder to understand
and going unconfined as root is not desirable any way.
2. For this sanitized_helper to work, the program running in the sanitized
environment must open symlinks directly in order for AppArmor to mediate
it. This is confirmed to work with:
- compiled code which can load shared libraries
- python imports
It is known not to work with:
- perl includes
3. Going forward it might be useful to try sanitizing ruby and java
Use at your own risk. This profile was developed as an interim workaround for
LP: #851986 until AppArmor implements proper environment filtering.
From the README in the toplevel source:
"[P11-KIT] Provides a way to load and enumerate PKCS#11 modules. Provides a
standard configuration setup for installing PKCS#11 modules in such a way that
they're discoverable."
File locatations are described in [1]. There is a global configuration file in
/etc/pkcs11/pkcs11.conf. Per module configuration happens in
/etc/pkcs11/<module name>. There is also user configuration in ~/.pkcs11, but
IMO this should not be allowed in the abstraction. Example configuration can be
seen in the upstream documentation[2].
This will likely need to be refined as more applications use p11-kit.
[1]http://p11-glue.freedesktop.org/doc/p11-kit/config-locations.html
[2]http://p11-glue.freedesktop.org/doc/p11-kit/config-example.html
Acked-by: Jamie Strandboge <jamie@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Also add p11-kit to authentication abstraction
Acked-by: Jamie Strandboge <jamie@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
From the README in the toplevel source:
"[P11-KIT] Provides a way to load and enumerate PKCS#11 modules. Provides a
standard configuration setup for installing PKCS#11 modules in such a way that
they're discoverable."
File locatations are described in [1]. There is a global configuration file in
/etc/pkcs11/pkcs11.conf. Per module configuration happens in
/etc/pkcs11/<module name>. There is also user configuration in ~/.pkcs11, but
IMO this should not be allowed in the abstraction. Example configuration can be
seen in the upstream documentation[2].
This will likely need to be refined as more applications use p11-kit.
[1]http://p11-glue.freedesktop.org/doc/p11-kit/config-locations.html
[2]http://p11-glue.freedesktop.org/doc/p11-kit/config-example.html
Acked-by: Jamie Strandboge <jamie@canonical.com>
Currently hfa::match calls hfa::match_len to do matching. However this
requires walking the input string twice. Instead provide a match routine
for input that is supposed to terminate at a given input character.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Add the ability to match strings directly from the hfa instead of needing
to build a cfha.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
asprintf is marked with warn_unused_result and its return value should
not be ignored, even casting to (void) will not remove this warning.
The current code ignored the result and used the value of newfmt to
make a decision. This is however not correct in that according to the
asprintf man page newfmt is undefined if asprintf returns an error.
Fix the warning and error by using the return value of asprintf
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
abstractions/apache2-common. Additionally, add read permissions
for /**/.htaccess and /dev/urandom to apache2-common.
The patch is based on a profile abstraction from darix. I made some
things more strict (compared to darix' profile), and OTOH added some
things that are needed on my servers.
*** BACKWARDS-INCOMPATIBLE CHANGES ***
^HANDLING_UNTRUSTED_INPUT
- don't allow /.htaccess (.htaccess files in subdirectories are still allowed)
- don't allow *.htaccess files (the old /**.htaccess rule was too generous)
Reworking this code is a step to getting rid of the SUB_NAME2 start
condition.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
Change how we handle the parsing of the hat and profile keywords this allows
us to get rid of the SUB_NAME2 start condition because the the whitespace
that is allowed by these rules are now consumed by matching the keyword
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
There is a lot of duplication of code calling processqunquoted and
processquoted. Move all this code to use the new processid fn.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
This is the first step in reducing the number of shared rules between the
different start conditions.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
The affected comment rule is already in the INITIAL start condition
so BEGIN(INITIAL) is extraneous and will cause problems when switching
to a stack of start conditions.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
The rlimit start condition was separating different rules of the base
set making the lexer grammer harder to read than necessary.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
The module interface calls for names with namespaces to be in the format of
:namespace:profile or :namespace://profile
but the parser was generating
namespace:profile
causing profile lookup to fail, or removal of the wrong profile as it was
done against the current namespace, instead of the specified namespace
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
The module interface calls for names with namespaces to be in the format of
:namespace:profile or :namespace://profile
but the parser was generating
namespace:profile
causing profile lookup to fail, or removal of the wrong profile as it was
done against the current namespace, instead of the specified namespace
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
instead of a NodeSet.
We need to store sets of Nodes, to compute the dfa but the C++ set is
not the most efficient way to do this as, it has a has a lot of overhead
just to store a single pointer.
Instead we can use an array of tightly packed pointers + a some header
information. We can do this because once the Set is finalized it will
not change, we just need to be able to reference and compare to it.
We don't use C++ Vectors as they have more overhead than a plain array
and we don't need their additional functionality.
We only replace the use of hashedNodeSets for non-accepting states as
these sets are only used in the dfa construction, and dominate the memory
usage. The accepting states still may need to be modified during
minimization and there are only a small number of entries (20-30), so
it does not make sense to convert them.
Also introduce a NodeVec cache that serves the same purpose as the NodeSet
cache that was introduced earlier.
This is not abstracted this out as nicely as might be desired but avoiding
the use of a custom iterator and directly iterating on the Node array
allows for a small performance gain, on larger sets.
This patch reduces the amount of heap memory used by dfa creation by about
4x - overhead. So for small dfas the savings is only 2-3x but on larger
dfas the savings become more and more pronounced.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
non-accepting, and have the proto-state use them.
To reduce memory overhead each set gains its own "cache" that make sure
there is only a single instance of each NodeSet generated. And since
we have a cache abstraction, move relavent stats into it.
Also refactor code slightly to make caches and work_queue etc, DFA member
variables instead of passing them as parameters.
The split + caching results in a small reduction in memory use as the
cost of ProtoState + Caching is less than the redundancy that is eliminated.
However this results in a small decrease in performance.
Sorry I know this really should have been split into multiple patches
but the patch evolved and I got lazy and decided to just not bother
splitting it.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
It is the functional equivalent of ProtoState. We do this to provide a
new level of abstraction that ProtoState can leverage, when the node types
are split.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
Create a new ProtoState class that will encapsulate the split, but for
this patch it will just contain what was done previously with NodeSet
Signed-off-by: John Johansen <john.johansen@canonical.com>
is done to be clear what TransitionTable is, as we will then add matching
capabilities. Renaming the files is just to make them consistent with
the class in the file.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
entries where the comm entry has been hex-encoded. This occurs when the
binary being confined contains a space or other problematic character in
its filename. A test case is included.
When executing apparmor_status from rc functions and utils are not installed, this message is received:
AppArmor is enabled,
Install the apparmor-utils package to receive more detailed
status information here (or examine directly).
Signed-off-by: John Johansen <john.johansen@canonical.com>
parser/Makefile has a number of issues.
* Some warnings are produced: "make[1]: warning: jobserver unavailable: using -j1. Add `+' to parent make rule."
* CXX is not always respected
* LDFLAGS are not always respected
modified to apply and retain $(Q) by John Johansen
Signed-off-by: John Johansen <john.johansen@canoncial.com>
When running installing apparmor-utils from Makefile, some warnings are
generated: make[1]: warning: jobserver unavailable: using -j1. Add
`+' to parent make rule.
Use $(MAKE) instead of make
Signed-off-by: John Johansen <john.johansen@canonical.com>
Original openSUSE changelog entry:
Thu Jan 6 16:23:19 UTC 2011 - rhafer@suse.de
- Splitted ldap related things from nameservice into separate
profile and added some missing paths (bnc#662761)
If $DISPLAY is not set and --display is not used, aa-notify prints a
warning that notifications won't be shown (exact warning text depends if
using sudo or not).
Acked-by: John Johansen <john.johansen@canonical.com>
requested and fails to be created. Also don't make the
warning output conditional on the showcache flag as we
should be showing warning/errors by default.
Signed-off-by: John Johansen <john.johansen@canonical.com>
openSUSE, which results in non-working desktop notifications in aa-notify
because $notify_exe is unable to connect to DBUS to display the message.
This patch sets the correct value for $HOME.
The code for setting $DISPLAY is still under discussion, therefore only
a TODO note is included in this commit for $DISPLAY.
Acked-By: John Johansen <john.johansen@canonical.com>
rc.apparmor.suse), I noticed that "rcapparmor restart" is
totally silent.
The attached patch prints a message in __apparmor_restart().
It also replaces the hardcoded "return 0" with $?. I'm quite sure this
won't catch all errors, but it's still better than the hardcoded success
message.
Acked-by: John Johansen <john.johansen@canonical.com>
- fix permissions for additional-log-sockets.conf (the comma in {var/,}
was at the wrong place, which broke the /var/run/ case)
- add read permissions for /sys/devices/system/cpu/online
(that was even new for Peter, but I trust him not to post faked
audit.log lines ;-)
Acked-by: John Johansen <john.johansen@canonical.com>
Fix the build so
make DEBUG=1
results in a compile with DEBUG turned on.
Also fix build errors in the compile with DEBUG is defined
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees.cook@canonical.com>
This documentation should have been checked in as part of the patches
that added aa_is_confined and aa_get_con.
Signed-off-by: John Johansen <john.johansen@canonical.com>
The define for pid_t is missing in apparmor.h so that if it is included
in programs that don't also include sys/types.h the compile will break.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees.cook@canonical.com>
Subject: apparmor-profiles: Add samba config files
References: bnc#679182 bnc#666450
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
- updated to match trunk
- added changed path to nmbd profile (/var/cache/samba has moved to
/var/lib/samba on (at least) openSUSE 11.4), bnc#679182#c8
For backward compability, it also allows /var/spool/samba.
- Note: The smbd profile already contains both locations.
by Christian Boltz <apparmor@cboltz.de>
updated according to the comments from Steve Beattie
by Christian Boltz <apparmor@cboltz.de>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
- allow /var/spool/mail, not only the /var/mail symlink
- allow @{HOME}/Mail/
- allow capability fsetid, read access to /etc/lsb-release and
SuSE-release and k for /var/{lib,run}/dovecot in usr.bin.dovecot
References:
- dovecot: Added support for /var/spool/mail (bnc#691072)
- Updated dovecot profile (bnc#681267).
Patch taken from openSUSE:11.4:Update:Test, file apparmor-profiles-dovecot
updated to match trunk by Christian Boltz <apparmor@cboltz.de>
Change compared to the patch posted to the ML:
- link rule instead of adding l permissions for /var/lib/dovecot and
/var/run/dovecot (as proposed by John Johansen)
Acked-By: John Johansen <john.johansen@canonical.com> on IRC
by converting the comm(1) usage on temporary files to an embedded
awk script. On both Ubuntu and OpenSUSE, a version of awk (mawk in
Ubuntu, gawk in OpenSUSE) is either a direct or indirect dependency
on the minimal or base package set, and the original reporter also
mentioned that an awk-based solution would be palatable in a way that
converting to bash, or using perl or python here would not be.
In the embedded awk script, I've tried to avoid gawk or mawk specific
behaviors or extensions; e.g. this is the reason for the call to sort
on the output of the awk script, rather than using gawk's asort(). But
please let me know if you see anything that shouldn't be portable
across awk implementations.
An additional issue that is fixed in both scripts is handling child
profiles (e.g. hats) during reload. If child profiles are filtered
out (via grep -v '//') of the list to consider, then on reloading
a profile where a child profile has been removed or renamed, that
child profile will continue to stick around. However, if the profile
containing child profiles is removed entirely, if the initscript
attempts to unload the child profiles after the parent is removed,
this will fail because they were unloaded when the parent was unloaded.
Thus I removed any filtering of child profiles out, but do a post-awk
reverse sort which guarantees that any child profiles will be removed
before their parent is. I also added the LC_COLLATE=C (based on the
Ubuntu version) to the sort call to ensure a consistent sort order.
To restate, the problem with the existing code is that it creates
temporary files in $TMPDIR (by default /tmp) and if that partition
is full, problems with the reload action ensue. Alternate solutions
include switching the initscript to use bash and its <$() extension
or setting TMPDIR to /dev/shm/. The former is unpalatable to some
(particularly for an initscript), and for the latter, /dev/shm is
only guaranteed to exist on GNU libc based systems (glibc apparently
expects /dev/shm to exist for its POSIX shared memory implementation;
see shm_overview(7)). So to me, awk (sans GNU extensions) looks to
be the least bad option here.
Bug: https://launchpad.net/bugs/775785
to switch to a non-root user. unscd is installed as /usr/sbin/nscd
at least at openSUSE.
Original changelog entry from unscd package:
Mon Sep 7 17:30:36 CEST 2009 - pbaudis[at]suse.cz
- Provide the /etc/apparmor.d/usr.sbin.nscd file and make it allow
for change to the nobody user [bnc#535467]
Currently the nscd package from glibc and the unscd package both contain
a usr.sbin.nscd profile which needs to maintained/updated manually.
With this patch, the profile could be moved back to the
apparmor-profiles package.
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Subject: apparmor-utils: Add support for creds and path operations
References: bnc#564316
2.6.29 introduced the path security_operations and credentials
This patch adds support for those operations to the log parser.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Resolved merge conflict and removal operation already supported by
the log parser.
Acked-by: John Johansen <john.johansen@canonical.com>
changing. Since we arguably shouldn't be hardcoding this kind of
thing, this changes a path around to use the C preprocessor to do the
work of finding the kernel definitions.
Signed-off-by: Kees Cook <kees.cook@canonical.com>
Acked-by: John Johansen <john.johansen@canonical.com>
instead.
Needed at least on upgraded Ubuntu machines that went from messages to
syslog recently. If this causes problems, we can easily revert it.
Signed-off-by: Kees Cook <kees.cook@canonical.com>
Acked-by: John Johansen <john.johansen@canonical.com>
syslog, otherwise audit events will get dropped.
This runs the risk of having the kernel log wrap around, but that
is a less common case that what this solves. This is a work-around
that will go away when complain info takes a different path in the
future.
I intentionally don't allow pUx and Pux since the behaviour of those is
very unexpected (the first letter decides if the environment is cleaned
up or not - at least that's the result of the discussion in April) and
the average user won't know this.
Acked-by: John Johansen <john.johansen@canonical.com>
profiles.
It also adds a comment to the klogd profile that capability sys_admin is
only needed for backward compatibility with older kernels.
Acked-by: John Johansen <john.johansen@canonical.com>
the modifiers as lowercase (meaning to pass on sensitive environment
variables to the exec'ed process) even if the user told them not to
when prompted. This patch fixes the issue.
aa-notify would abort if it could not stat the logfile, as can happen
when using auditd and the directory perms for the logfile do not allow access
(x). Add raise_privileges() and drop_privileges() helper functions and adjust
get_logfile_size() and get_logfile_inode() to raise then drop privileges if the
logfile parent directory is not executable. Also adjust reopen_logfile() to use
these helpers.
When error checking in these helpers, use '$> == ...' instead of '$> = ... or
die...' since perl always dies when raising privs in this manner even though
the euid did change (and $!, $@, $^E, and $? are all the same). Not sure why
this is happening but the '==' check should be sufficient.
aa-notify would abort if it could not stat the logfile, as can happen
when using auditd and the directory perms for the logfile do not allow access
(x). Add raise_privileges() and drop_privileges() helper functions and adjust
get_logfile_size() and get_logfile_inode() to raise then drop privileges if the
logfile parent directory is not executable. Also adjust reopen_logfile() to use
these helpers.
When error checking, use '$> == ...' instead of '$> = ... or die...' since perl
always dies when raising privs in this manner even though the euid did change
(and $!, $@, $^E, and $? are all the same). Not sure why this is happening but
the '==' check should be sufficient.
- drop supplemental group privileges too. While POSIX::setgid() works nice in
that it will set both the real uid and euid, it doesn't do anything with the
supplemental groups (sigh). Instead, assign to $( and $) in a manner that
clears the supplemental groups.
in merging in the opensuse fixes to the dhclient profile. It does so
by merging them, using the profile for dhclient-script if it exists
and inheriting dhclient's profile if it does not.
Subject: apparmor-utils: Fix handling of files in /
References: bnc#397883
The separate handling of files and directories with realpath is broken.
For files e.g. /foo, $dir ends up being empty since the / is eaten by
the regex. realpath resolves an empty argument as the current directory,
resulting in an incorrect path.
There's no explanation of why the separate handling was used in the
first place.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Subject: Fix for sshd profile
References: bnc#457072
Without this patch, sshd won't work in enforce mode.
libselinux accesses /proc/filesystems to determine if it's enabled
bash won't execute
audit_control is probably from libselinux too
Updated by Christian Boltz <apparmor@cboltz.de>:
- add /proc/*/oom_adj and oom_score_adj rw
- add /var/log/btmp r
- add /var/log/lastlog k
- removed capability sys_ptrace - doesn't seem to be needed
- changed all login shells to rUx, not only bash
- removed /proc/filesystems (already part of abstractions/base)
Acked-By: John Johansen <john.johansen@canonical.com>
with the following note:
ACK because I don't see a choice right now but for the 3.0 release
(next year) I'll ask you to retest and add newer audit controls.
Subject: apparmor-utils: Add check_for_apparmor helper.
This should be an alias but those get complicated quickly in perl.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Subject: apparmor-utils: setprofileflags() drops leading whitespace
References: bnc#480795
setprofileflags() drops leading whitespace for subprofiles. writeheader()
properly indents subprofiles 2 spaces per nesting level but when
genprof sets the profile to enforce mode at completion, the whitespace
is removed.
This patch adds the whitespace globbing to the regexp and uses it to
prefix the sub-profile with the correct spacing.
Reported at: https://bugzilla.novell.com/show_bug.cgi?id=480795
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Allow for rlimit cpu to specified which is now supported by the kernel.
Previously the rlimit units where limited to K, M, G and would fail when
KB, MB, GB where used. Allow for both, also allow for units on lengths
of time, by specifying "seconds", "minutes", "hours".. or any unique subset
eg. "s", "sec", "m", "min", "h", "hour" ..
NOTE:
This patch does not extend rlimits to be able to handle setting of tasks
that are confined by other profiles.
Signed-off-by: John Johansen <john.johansen@canonical.com>
to /etc/apparmor/parser.conf (NOTE option to allow changing this is not
provided currently).
Signed-off-by: John Johansen <john.johansen@canonical.com>
create the generated_* directories themselves if they don't exist before
running the script to generate them.
Also modify the default invocation of prove to add -f, which reports the
details of failing test cases.
Changed /var/run/cups/** rw, to
/{,var/}run/cups/ rw,
/{,var/}run/cups/** rw,
as requested by Steve Beattie
With this change:
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Subject: dnsmasq: Profile fixes
References: bnc#666090 bnc#678749
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Updated to match master by
Christian Boltz <apparmor@cboltz.de>
Updated for systemd (/{,var/},run/ instead of /var/run/) by
Christian Boltz <apparmor@cboltz.de> as requested by Steve Beattie
With this change:
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
(final confirmation on IRC in #apparmor)
updated to match master by
Christian Boltz <apparmor@cboltz.de>
updated to work with systemd (/{,var/}run/ instead of /var/run)
Christian Boltz <apparmor@cboltz.de> as requested by Steve Beattie
With this change:
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Subject: dhcpd: Fix apparmor profile
References: bnc#692428
This patch adds the network rules needed, corrects the path to dhcpd.leases,
and adds the path for TSIG DNS keys.
Reported-by: Andrew Beames <suseforum@roocomputing.co.uk>
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
updated to match trunk by
Christian Boltz <apparmor@cboltz.de>
updated to use
/var/lib/dhcp/{db/,}dhcpd.leases* rwl,
(instead of just /var/lib/dhcp/db/dhcpd.leases* rwl) to keep the profile
Ubuntu-compatible as requested by Steve Beattie.
With this change:
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Subject: profiles: Add openssl abstraction
References: bnc#623886
Profiles that use openssl have been adding the openssl files piecemeal.
This patch creates a new openssl abstraction that can be inherited by
all profiles that use it.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Patch for
- profiles/apparmor.d/abstractions/ssl_certs
- profiles/apparmor/profiles/extras/usr.sbin.httpd2-prefork (second chunk)
updated by Christian Boltz <apparmor@cboltz.de>
(didn't apply to trunk)
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Copyright header in profiles/apparmor.d/abstractions/openssl added by
Christian Boltz <apparmor@cboltz.de>
Subject: profile: ntpd -N needs sys_nice
References: bnc#657054
ntpd -N allows the administrator to increase or decrease priority of the
ntp server. Since the profile doesn't allow it, the operation is denied.
This patch adds support for that operation.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
along with a link to the wiki page. This helps users locate profiles
that possibly already exist for the application they are attempting to
confine, and suggests they contribute the profile when they're done.
apparmor_2.6.1~rc1 to apparmor_2.6.1-rc1
apparmor_2.6.0~rc1 to apparmor_2.6.0-rc1
to be consistent with the new format and to enable mirroring to a git
repository
'~' replaced by '-'. This is needed for mirroring to git as git can't
handle '~'s embedded in tag or branch names.
Tested by setting up a separate tag_version target like so:
tag_version:
echo ${TAG_VERSION}
This patch fixes the init scripts helper functions file to
filter out the hat/child process separator as currently used
by the parser, '//' rather than what used to be used, the '^'
symbol. This fixes bugs where profiles that covered regexs (e.g.
'/usr/lib/firefox-4.0.1/firefox{,*[^s][^h]}') and thus were being
improperly filtered away and unloaded when reloading apparmor policy.
binary portions (Hurd). This patch splits up the build targets so this is
possible:
"main" becomes "arch"
"indep" is created and depends on "docs"
po building is moved from "main" to "indep"
"all" has "tests" removed (standard build practices are to "make" then
"make check" so I think "tests"/"check" should stay separate from "all").
redundant chunk is removed (this exists twice in the Makefile):
-.SILENT: check
-check: tests
"install" is split into "install-indep" and "install-arch"
"install-arch" requires "arch" and only installs the binaries
"install-indep" requires "indep" and only install non-binaries
Additionally, update the README to mention the "check" target both for the
parser and the utils.
Signed-off-by: Kees Cook <kees.cook@canonical.com>
Acked-by: Steve Beattie <steve@nxnw.org>
Some non-Linux systems do not define PATH_MAX (Hurd). Since I have no
interest in supporting a fully dynamic PATH_MAX in AppArmor, work around
this by just defining a static value that matches Linux's limits.h value.
Signed-off-by: Kees Cook <kees.cook@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
translations to be built via the LANGS make argument whitelist. For
example:
cd parser; make all install "LANGS=en_US fr"
will build and install the en_US and fr .mo files for the parser.
Allow dumping out which states where dropped during partition minimization
and which state became the partitions representative state.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
The dfa graph dump was broken by previous dfa cleanups so that the graph
transition target is the output of a pointer instead of the dfa state
number.
Signed-off-by: John Johansen <john.johansen@canonical.com>
This is a rather large rearrangement of how a subset of the parser global
variables are defined. Right now, there are unit tests built without
linking against parser_main.c. As a result, none of the globals defined in
parser_main.c could be used in the code that is built for unit tests
(misc, regex, symtab, variable). To get a clean build, either stubs needed
to be added to "#ifdef UNIT_TEST" blocks in each .c file, or we had to
depend on link-time optimizations that would throw out the unused routines.
First, this is a problem because all the compile-time warnings had to be
explicitly silenced, so reviewing the build logs becomes difficult on
failures, and we can potentially (in really unlucky situations) test
something that isn't actually part of the "real" parser.
Second, not all compilers will allow this kind of linking (e.g. mips gcc),
and the missing symbols at link time will fail the entire build even though
they're technically not needed.
To solve all of this, I've moved all of the global variables used in lex,
yacc, and main to parser_common.c, and adjusted the .h files. On top of
this, I made sure to fully link the tst builds so all symbols are resolved
(including aare lib) and removedonly tst build-log silencing (for now,
deferring to another future patchset to consolidate the build silencing).
Signed-off-by: Kees Cook <kees.cook@canonical.com>
Johansen, use 'ix' instead of 'Pix' for dbus-launch since if someone happens to
define a profile for dbus-launch and it is loosely confined, then users of this
abstraction could end up launching a program via dbus-launch in a less confined
manner than intended. This sort of thing should not be possible via an
abstraction (and people are always free to profile using Pix if they prefer).
since things go extremely badly when capabilities disappear. If someone
wants to work on it, I have some initial patch attempts, but it was getting
too time-consuming, so I back-burnered the parser. A very small change was
needed to get the libraries to build, and this is it.
Description: Workaround non-Linux environments to build everything but the
parser.
Author: Kees Cook <kees@debian.org>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
- move cap_sys_module and cap_sys_rawio to "dangerous" capabilities
- sorted sdKapKeyDanger
Proposed by Seth Arnold,
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
about an actual bug in the parser; namely that when handling strings
encapsulated in quotes, that our handling of octals is busted. It
fixes this by fixing the case entries so that 3 digit octals will
get parsed correctly, rather than dropped.
It also adds a bunch of unit tests for the processquoted() function.
32bit arch, due to size_t objects being passed to fprintf with format
strings expecting longs. It does this by adjusting the fprintf rules
to expect size_t objects.
the default compilation rules when compiling C++ files, so that things
like CFLAGS et al will be honored. Without this, doing 'make DEBUG=y'
in the parser/ tree will not have its added -pg flag honored, breaking
profiling of the parser.
Basically the files will generate apparmor.vim as included in openSUSE
11.4 (and posted here before at the end of january). The only difference
is that the patch that Steve posted some days ago is already included
(patch summary: sdGlob: first character of variable name has to be
:alpha:, followed by any number of :alnum: or _)
stress tests on the parser, by dropping the maximum number of rules
each profile can have, as well as reducing the number of profiles to
generate by default to 50. It also cleans up the emitted profiles
a little, creates the profile names with the suffix .sd [1], fixes
stress.sh to actually honor the -p (alternate parser) argument, fixes
the profile flags generation to not generate duplicates flags, and
fixes the file rules to always start with a constant randomly-generated
prefix element (rather than a regex or variable) to greatly reduce
the possibility of X dominance collisions in the parser
'[[:alpha:]][[:alnum:]_]*' (i.e. a single alpha followed by any number
of alphanumerics or underscores). Unfortunately, the code that expends
variables inside a profile does not match this, it incorrectly matched
'([[:alpha:]]|_)+' (one or more alphas or underscores). This patch
corrects the behavior there as well as synchronizing the expected
variable names in the apparmor.d manpage and apparmor.vim syntax file.
It also adds unit tests and testcases to verify the behavior.
Signed-off-by: Steve Beattie <sbeattie@ubuntu.com>
process does not generate local files for things in extras, and even if
it did, this one is named in a non-standard fashion (usr.bin.firefox vs.
usr.lib.firefox.firefox).
the extras directory as intended and fail the make if a parse failure
occurs. Also, set the default parser and logprof to be the intree ones;
the system ones can still be used by setting environment variables.
Finally, have the 'all' target generate the local files. Also, set the
parser base directory to the apparmor.d directory (rather than as an
added include, to avoid outside contamination from system profiles and
includes).
With these changes, make && make check should verify the profile set is
compilable and mostly consistent. (Alas, the current profiles are not
quite consistent).
built libapparmor, as well as working around libtool so that the
libapparmor library build directory does not get added as an rpath to
the module.
Bug: https://launchpad.net/bugs/737074
Split hfa into hfa and compressed_hfa files. The hfa portion focuses on
creating an manipulating hfas, while compressed_hfa is used for creating
compressed hfas that can be used/reused at run time with much less memory
usage than the full blown hfa.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Split out the aare_rule bits that encapsulate the convertion of apparmor
rules into the final compressed dfa.
This patch will not compile because of the it needs hfa to export an interface
but hfa is going to be split so just delay until hfa and transtable are
split and they can each export their own interface.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Start of splitting regexp.y into logical components instead of the mess
it is today. Split out the expr-tree and parsing components from regexp.y
int expr-tree.x and parse.y and since regexp.y no longer does parsing
rename it to hfa.cc
Some code cleanups snuck their way into this patch and since I am to
lazy to redo it, I have left them in.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
If the apparmor_parser is updated (outside of current packaging), when
doing profile loads it will use the existing cache of compiled profiles,
instead of forcing a recompile on profiles.
This can cause apparmor to load bad policy if the parser contains a bug
fix for the previous version of the parser.
This can be worked around in packaging by invalidating the cache and
forcing a profile reload when the parser is upgraded.
Signed-off-by: John Johansen <john.johansen@canonical.com>
attachment specification doesn't contain globbing.
eg.
# profile name and attachment the same - attaches as expected
profile /usr/lib/chromium-browser/chromium-browser
# profile without attachment specification - does not attach as expected
profile chromium-browser
# profile with name and attachment specification where the attachment specification uses globbing - attaches as expected
profile chromium-browser /usr/lib/chromium-browser/chromium-broswer*
# profile with name and attachment specification without globbing - FAILS to attach when it should
profile chromium-browser /usr/lib/chromium-browser/chromium-browser
This occurs because the xmatch_len is not set correctly for the profiles that specify
a name and an attachment specification, where the attachment specification does not
contain globbing characters.
In this situation the correct length for the xmatch_len is the length of the name, as
the shortest possible unambiguous match is the name length.
This patch does not fix a related bug where an attachment specification of ** will not
match (/**) will.
Older versions of the apparmor kernel patches didn't handle receiving
network tables of a larger size than expected.
Allow the parser to detect the kernel version and override the AF_MAX
value for those kernels.
This also replaces the hack using a hardcoded limit of 36 for kernels
missing the features flag.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees.cook@canonical.com>
reload. For now just special-case libvirt's profiles. If more applications
use dynamic profiles, this should be generalized in some way to flag profiles
as dynamic. (LP: #702774)
reload. For now just special-case libvirt's profiles. If more applications
use dynamic profiles, this should be generalized in some way to flag profiles
as dynamic. (LP: #702774)
reload. For now just special-case libvirt's profiles. If more applications
use dynamic profiles, this should be generalized in some way to flag profiles
as dynamic.
Rename change_hat.c to kernel_interface.c to better reflect that it
is providing multiple kernel_interfaces.
Signed-off-by: John Johansen <john.johansen@canonical.com>
The apparmor_parser translation files where using the old subdomain_parser
domain, but the parser was binding to apparmor-parser. Create a new
apparmor-parser.pot file and remove the subdomain_parser.pot file.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Output a better failure message when a conflict of x permissions cause
policy compilation to fail. We don't have enough information available
to output which rules during the dfa compilation so just improve the
message to let people know that it means there are conflicting x modifiers
in the rules.
Signed-off-by: John Johansen <john.johansen@canonical.com>
portion of apparmor has gone upstream. These patches had already been
dropped from the 2.5.x tree.
The compatibility kernel patches are still provided.
Subject: apparmor-utils: Inherit flags in sub-profiles when generating profiles
References: bnc#496204
When creating profiles with cx subprofiles, genprof will set the
sub-profile in enforce mode. When genprof cycles multiple times, it
prohibits the sub-profile from working correctly.
e.g.
# Last Modified: Mon Jan 24 13:52:26 2011
#include <tunables/global>
/home/jeffm/mycat flags=(complain) {
#include <abstractions/base>
#include <abstractions/bash>
#include <abstractions/consoles>
/bin/bash ix,
/bin/cat cx,
/home/jeffm/mycat r,
profile /bin/cat {
#include <abstractions/base>
/bin/cat r,
/home/jeffm/mycat r,
}
}
This patch allows sub-profiles to inherit the flags from the parent
profile, which allows it to be created in complain mode (if appropriate).
The temporary complain flags are cleaned up at genprof completion as
expected.
This issue was reported at: https://bugzilla.novell.com/show_bug.cgi?id=496204
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Bug: https://launchpad.net/bugs/707092
Subject: Subdomain.pm: Fix for null path
References: bnc#407959
When handling the following log entry, logprof will spew perl errors and
ultimately generate an invalid config: "r,"
Since there is nothing to do with a null path, just skip to the next entry.
type=APPARMOR_DENIED msg=audit(1214497030.421:39): operation="inode_permission" info="Failed name resolution - object not a valid entry" requested_mask="r" denied_mask="r" pid=31367 profile="/usr/sbin/httpd2-worker
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Subject: apparmor: Subdomain.pm: Fix handling of audits of unconfined processes
The version of AppArmor that was accepted into the mainline kernel
issues audit events for things like change_hat while unconfined.
Previous versions just returned -EPERM without the audit.
This results in logprof and friends spewing uninitialized value errors
when it hits events like:
type=AVC msg=audit(1291742101.899:220): apparmor="DENIED" operation="change_hat" info="unconfined" error=-1 pid=28005 comm="cron
... which happen any time an unconfined process does something with pam
when pam_apparmor is installed.
This patch skips those events.
[Note that the second half of the OpenSUSE patch had already been applied.]
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Subject: apparmor: Fix incorrect /proc/*/sys usage in usr.sbin.ntpd
References: bnc#634801
/proc/sys/kernel exists, but /proc/*/sys/kernel doesn't. This patch
fixes the profile.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Description: the Ubuntu buildds do not have the AppArmor securityfs mounted, so
the cache tests fail. This patch skips these tests if the introspection
directory is not mounted, but runs them if it is. This should allow testing of
local builds while still allowing builds on the official buildds.
Acked-By: Steve Beattie <sbeattie@ubuntu.com> - both Ubuntu and
OpenSUSE were carrying patches that disabled the caching test,
though OpenSUSE's disabled it completely rather than checking. The
parser builds need to complete even when the kernel it's building on
doesn't support AppArmor or all the extensions that the parser needs
at runtime.
Subject: apparmor-docs: Fix grammar error in techdoc.pdf
References: bnc#588235
This patch fixes a grammar error in techdoc.pdf.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Subject: apparmor-utils: Translation unification
References: bnc#586072
This patch removes small inconsistencies between identical strings to
allow for easier translation.
Reported-by: Isis Binder <isis.binder@gmail.com>
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Subject: [PATCH] apparmor-utils: cleanup after abort in genprof
References: bnc#307067
The initial generation of the base profile is required to be written out
to put the process in complain mode for observation. If the user
decides to abort the profiling session, that base profile is left
behind.
This patch removes all profiles created during the run up to an abort.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
aa-enforce and aa-complain exist to put a profile into enforce or
complain mode respectively. The /etc/apparmor.d/disable directory
already exists to drop files into it to disable profile load via
apparmor_parser (and therefore via the apparmor initscript). What
doesn't exist is aa-disable to add a file to the disable/ directory and
unload the profile. This patch does that. This version of aa-disable is
based on aa-complain (in fact doing a diff between aa-complain and
aa-disable might make review easier) and works as well as aa-enforce and
aa-complain. In other words, aa-disable has the same limitations of not
handling the specified binary properly if the specified attachment does
not match the path naming scheme (eg, the profile doesn't use the
conventional path.to.binary naming scheme, globbing is used for
attachment within the profile, etc). Also adjust documentation to
reference aa-disable.
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
This patch fixes a logprof bug where when profiles with variable
declarations at the top level (not hidden in an include) were written
back to a file, a trailing comma was being added to the declaration
statement, which is invalid apparmor policy syntax. This patch corrects
this and no longer adds the trailing comma.
Subject: apparmor: Fix network event parsing
References: bnc#665483
The upstream version of AppArmor had network mediation but it was
removed. There's a compability patch floating around that both openSUSE
and Ubuntu have applied to their kernels. Unfortunately, one part was
overlooked. The socket operation event names where changed from the
socket_ prefixed names they had when AppArmor was out-of-tree and
utils/SubDomain.pm was never updated to understand them.
This patch adds an operation-type table so that the code can just
do a optype($operation) call to discover what type of operation a
particular name refers to. It then uses this in place of the socket_
checks to decide whether an event is a network operation.
This allows genprof and logprof to work with networking rules again.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Bug: https://launchpad.net/bugs/706733
The testcases that were in place for the old style log messages have
had their expected output modified such that they are expected to
return invalid results, rather than deleting the testcases outright.
"SubDomain" in some way. This leaves only "subdomain.conf" and the
function names internally.
Additionally, I added a "make check" rule to the utils/Makefile to do a
simple "perl -c" sanity check just for good measure.
allows write to the ~/Desktop directory, which could conceivably allow writing
of .desktop files which could be clicked on and executed by the user. This is
based on the firefox base profile as included in Ubuntu. Notable features:
- allows for using the browser to navigate through directories
- allows reads from @{HOME}/Public/**
- allows writes to @{HOME}/Downloads/**
The intent of this profile is to restrict code execution, writes to $HOME
and information leaks while allowing basic web browsing and reading of
system documentation. It does not allow for plugins, extensions or other
helpers (but these can be added via the local/ mechanism).
- allow net_admin capability for DHCP server
- allow net_raw and network inet raw for ICMP pings when used as a DHCP
server
- allow read and write access to libvirt pid files for dnsmasq
See the FAQ in the dnsmasq source for details. This fixes
https://launchpad.net/bugs/697239
toolchain has gotten stricter about linking order; in short, linked
libraries need to come after the objects referring to them. Adding to
LDLIBS is the correct solution for this.
See https://wiki.ubuntu.com/NattyNarwhal/ToolchainTransition for more
details.
use by more and more applications, including empathy and evolution. It
is listed on freedesktop.org. See:
http://www.abisource.com/projects/enchant/
This abstraction gives access to enchant itself, files in the user's home
directory for enchant and various dictionaries for:
- aspell
- ispell
- hunspell
- myspell
- hspell
- zemberek
- voikko
start to use it. Additionally, the 'rw' on the @{HOME}/.config/ibus/bus/
probably only needs 'create' and 'chmod', so that could be tightened up once
those are exposed in the tools. LP: #649497.
$config->{repository}{enabled} = "no" (LP: #692406). We need to do this
since opensuse's site is down and there is no current alternative. Can
reenable once we have an alternative.
$config->{repository}{enabled} = "no" (LP: #692406). We need to do this
since opensuse's site is down and there is no current alternative. Can
reenable once we have an alternative.
When doing permission merging in the dfa minimization phase the information
about whether a rule is dominant or not has been lost so the merge of
xtransitions can not be handled correctly.
When two conflicting x transitions are merged the results are unpredicitable
and not currently detected. So default dfa minimization to set up its
initial partitions with permission hashing, this ensures that dfa states
that have different xtransitions in the minimization stage will never
be merged thus will not result in a conflict.
x permission checking is still enforced at the dfa creation phase where
the originial information is available to check whether the conflicting
permissions came from exact match or re rules so that conflict resolution
can be properly applied.
The end result is that dfa minimization does not result in a truely minimal
dfa (the minimization phase is also slightly faster).
Signed-off-by: John Johansen <john.johansen@canonical.com>
Currently apparmor provides the unsafe keyword to indicate an xtransition
is not scrubbing its environment variables. This can be used to be
explicit about which transition are unsafe instead of relying on people
remembering which of px Px is safe or unsafe.
Add the orthogonal keyword safe to allow specifying a transition is
safe.
Signed-off-by: John Johansen <john.johansen@canonical.com>
x Permissions when specified as a the start of the rule had a differnt
meaning than when they appeared at the tail of a rule.
Specifically px,cx,ux were not treated as unsafe when they appeared at
the start of the rule.
px /foo,
instead of at the tail of the rule
/foo px,
the keyword unsafe had to be used to force the rule to cause the x transitio
to be its unsafe variant.
Fix leading permissions so that they are consistent with file rules that
use trailing permissions.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Test the leading permission form of an xrule against its trailing permission
form, to verify that they are generating the same xtransition and thus
don't conflict (assumes xtransition conflict checking is working).
eg.
px /foo,
/foo px,
should generate the same rule and thus not result in any conflicts
Signed-off-by: John Johansen <john.johansen@canonical.com>
All the combiniation of xtransition conflics where not well represented in
the regression test suite. Instead of relying on multiple static test
files, automatically generate all possible conflicts.
Signed-off-by: John Johansen <john.johansen@canonical.com>
The is_merged_x_consistend macro was incorrect in that is tested for
USER_EXEC_TYPE to determine if there was an x transition. This fails
for unconfined execs so an unconfined exec would not correctly conflict
with another exec type.
The dfa match flag table for xtransitions was not large enough and not
indexed properly for pux, and cux transitions. The index calculation did
not take into account the pux flag so that pux and px aliased to the same
location and cux and cx aliased to the same location.
This would result in the first rule being processed defining what the
transition type was for all following rules of the type following. So
if a px transition was processed first all pux, transitions in the profile
would be treated pux.
Signed-off-by: John Johansen <john.johansen@canonical.com>
The dfa engine uses the defines from immunix.h for permission conflict
checking, so make the build depend on it.
Signed-off-by: John Johansen <john.johansen@canonical.com>
During some of the dfa cleanups, the checks for conflicting xtransition
was removed. This adds the conflict checking back in and makes it part
of dfa creation.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Several of the x-trans tests where failing because of the include file was
bad. This kept the test from testing what it was supposed as the test
was expected to fail. Thus hidding a bug :(
Signed-off-by: John Johansen <john.johansen@canonical.com>
Add the ability to specify the name and attachment of the profile
separately. It does not allow for the attachment specification to
begin with a variable however since variables in profile names is not
currently support this shouldn't be and issue.
Signed-off-by: John Johansen <john.johansen@canonical.com>
clean up profile parsing by merging profile and :namespace:profile parsing
into a single rule.
This also fixes a bug where the profile keyword was not allowed to proceed
profiles with a namespace declaration.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
Short summary: Unloading of profiles with a space in the name fails,
therefore "rcapparmor stop" (or restart) causes a funny message - and
the profile is still loaded.
Thanks to Christian Boltz <apparmor@cboltz.de>
parser that interact with the regex DFA generation library, and thus
need to be recompiled when the header file changes.
(This patch isn't particularly of interest to distros, as they
typically won't be doing incremental compilation.)
The other changes have made it so that using a macro really isn't justified
so rework the code to get rid of the hiddeous update_for_nodes macro.
Signed-off-by: John Johansen <john.johansen@canonical.com>
With the addition of the nodes field to the state we can make the work
queue, be based off of the state instead of the node, and avoid doing
the node to map lookup to get back to the state.
This means that the NodeMap is now only used for duplicate elimination.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Factoring the updating of the state transitions doesn't save on any code
but it provides a nice logical seperation and makes the dfa work_queue
loop and the updating of the state transitions easier to understand as
units.
Signed-off-by: John Johansen <john.johansen@canonical.com>
The match_count variable is a sum of the number of duplicates node sets
that have been encountered and discarded. Rename it to better reflect what
it is doing.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Embedding the nodes are part of the state gives fast back reference from
the state to the nodes that created it. This is useful for the state to
nodes mapping dump as it lets us output the states in order. It will also
let us avoid certain nodemap lookup in the future.
Overlay the nodes field (used only in dfa construction) with the partition
field which is only used during dfa minimization to avoid making the state
any larger.
Signed-off-by: John Johansen <john.johansen@canonical.com>
commits were made (as well as a few other minor warnings elsewhere).
The Makefile change is to avoid passing -Wstrict-prototypes and
-Wnested-externs to the C++ compiler, which the compiler yells about and
then ignores.
Since we compile with -Wmissing-field-initializers I dropped the
unreferenced zero-width fields in the header structs, and then explicitly
initialized the remaining fields.
I tagged several unused function parameters to silence those warnings.
And finally, I dropped the unused filter_escapes() too.
Embedding the the partition mapping into the State structure significantly
speeds up dfa minimization, by converting rbtree finds to straight direct
references when checking for same mappings.
The overall time improvement is small but it can half the time spent in
minimization.
The nodemap.size() increases by one with each node added, every time we
add a state we label it so this provides the proper labeling without needing
a separate variable.
add short options to turn on all stats, and all progress indicators,
also allow adding "no-" prefix to dump options to allow subtracting
individual options when short options are used.
eg.
-D stats -D no-expr-simplify
Move the -O and -D options into tables, that keep the option and its
description. This will help keep the options consistent and the description
up to date, as all information is now in one place.
Previously the options, and descriptions kept getting out of sync as all
relavent parts were spread out.
help reduce peak memory usage in some cases.
Also disbale remove_unreachable, as the current dfa code isn't generating
unreachable states, and minimization removes any states that are connected
but redundant.
hold permission information. We currently keep them in a table with a
refcount so that they don't go away, until we delete the table.
We can simulate this by getting rid of the refcount, and making dup and release
virtual, and overriding it for the special accept nodes.
improves minimization performance, it can slow down total creation time and
result in larger compressed dfas.
This is because it results in the dfa not being completely minimized which
with the current O(n2) dfa table compression algorithm can result in slower
compressed dfa generation.
first hash does hashing on state just state transitions, which always results
in a performance improvement.
The second does hashing based off of accept permissions, which can create
more initial states but can result in not being able to achieve a true
minimum dfa. This can also lead to slowing down total dfa creation because
while minimization, compression can take longer if the dfa isn't completely
minimized.
permission hashing is currently required, as minimization does not accumulate
redundant Node permissions.
memory than just using the NodeSet size to short circuit comparison but it
improves on the case where compared sets have the same size. It is possible
that this will slow down small dfa generation slightly but the trade off for
large dfa's (which are the slow ones to generate) is worth it.
This results in another performance bump over using the NodeSize is NodeSet
comparison, and the amount of improvement increases with larger dfas
of pointers when it isn't necessary. This results in a nice little
performance increase in dfa creation.
This is more of a proof of concept patch, and is replaced by the next
patch which does better short circuiting via hashing
the large side, and I experimented with different ways to split this up but in
the end, anything I could do would result in a series of dependent patches
that would require all of them to be applied to get meaningful functional
changes.
The patch structural reworks the dfa so that
- there is a new State class, it takes the place of sets of nodes in the
dfa, and allows storing state information within the state
- removes the dfa transition table, which mapped sets of nodes to a
transition table, by moving the transition into the new state class
- computes dfa state permissions once (stored in the state)
- expression tree nodes are independent from a created dfa. This allows
computed expression trees, and sets of Nodes (used as protostates when
computing the dfa). To be managed independent of the dfa life time.
This will allow reducing the amount of memory used, in the future,
and will also allow separating the expression tree logic out into
its own file.
The patch has some effect on reducing peak memory usage, and computation
time. The actual amount of reduction is dependent on the number of states
in the dfa with larger saving being achieved on larger dfas. Eg. for
the test evince profile I was using it makes the parser about 7% faster with a
peak memory usage about 12% less.
This patch changes the initial partition hashing of minimization resulting
in slightly smaller dfas.
of a mix of symlinks to non-prefixed comands, and "apparmor_" prefixed
commands.
This also refactors the manpage generation slightly since we no longer
need special cases for the manpages, and drops aa-eventd from the default
list of tools to install (it also lacks a manpage).
exported in the environment. Without it, merely setting the CFLAGS
environment variable would not affect the compilation of the parser,
though it was still possible to override it by passing the variable
as an argument (e.g. make all CFLAGS="-Oinsane -Wextra-special").
It also makes the default CFLAGS for the parser consistent with
the default for the C++ dfa library, and passes the flags on to
the library.
An audit of the other bits of C showed that they either supported
CFLAGS during configure or were otherwise honoring CFLAGS when set
as environment variable.
the common/Make.rules file into common/Version so that libapparmor's
configure.in can make use of it, meaning there's one less thing to
adjust when updating the version. It also bumps the trunk version
from 2.5 to 2.5.90 in (perhaps excessively long) preparation for the
2.6.0 release, and to indicate that it's newer than the 2.5.x branch.
tarballs and converts some of the common/Make.rules targets to get
version information from bzr. As part of this, the tarball generation
creates a .stamp_rev file in the common directory which contains both
the name of the bzr repo exported from as well as the revision.
This just adds prototypes to all functions to make further cleanup
slightly easier by getting perl to complain if not enough args are
passed to a function. Perl doesn't appear to complain about this in
every case even with prototypes, which is kind of annoying.
One of the uses of eval { } wasn't checking $@ for errors, so if
something bad happened, it'd be silently ignored. This just adds in
an extra check to die if we hit a failure.
loopback mounted filesystem to operate on, to guarantee that the mount
option user_xattr is enabled (it's disabled by default on Ubuntu).
With this change, a number of the user xattr testcases that were
expected to pass but weren't started working; however, some of the
ones that were failing as expected are now passing. I've touched up
the expectations as well.
script and add an additional sleep before the parser invocation that
generates the cache file for the first time, to avoid failures in the
"Profiles are cached when requested:" test on ext3 and other filesystems
without fine-grained enough timestamps.
parsing, and precompilation of policy. This allows finding the most
recent text time stamp during parsing and this is then compared to
the cache file time stamp.
While this is slightly slower than the cache file check that only
validated against the profile file it fixes the bug where abstraction
updates do not cause the cache file to become invalid.
capability is reported by LSM_AUDIT and is just the capability number.
capname is reported by the apparmor module and is the name the kernel
knows the capability as.
For now just use capname and silently drop capability when it is found.
started. Since apparmor_notify is not installed by default and not started
by default, the act of installing and starting it implies the desire to
get messages.
https://bugs.launchpad.net/apparmor/+bug/623467
This patch adds some additional testcases to the log parsing
testsuite, to cover rejections for operations that aren't covered by
other testcase (truncate, rename_src, rename_dest, mkdir) as well
as fixing SubDomain.pm to take those operations into account when
parsing log files.
The operations link, unlink, and possibly setattr still need to be
covered by SubDomain.pm
kernel when the hat that was passed does not exist in the profile (but
other hats exist). It also removes the very old EPERM case, which hasn't
been accurate for a while. (LP: #619521)
this results in
Unable to open output file - Success
to be output to standard error.
This occurs because despite specifying kernel_load = 0, the kernel load
parts are still being done, and failing.
- create profiles/apparmor.d/local/README to explain it all
- adjust shipped profiles in profiles/apparmor.d to include the local changes
- adjust profiles/Makefile for local files
- add profiles/local/README
- adjust profiles/apparmor.d/{bin,sbin,usr}* to include a file from local/
- adjust profiles/apparmor.d/{bin,sbin,usr}* for for copyright, some whitespace
and svn conventions
the testsuite. It looks like coredump mediation may have been removed,
since it is rather a corner-case, so I have currently marked it as XFAIL.
In hooking it back up, the "prologue.inc" was reviewed, dead code dropped,
and the "image=" argument changed to correctly handle the imageperms
syntax used elsewhere. It was working in other tests out of coincidence.
tree. It is limited in that it doesn't currently handle the permissions of a rule.
conversion output presents an aare -> prce conversion followed by 1 or more expression
tree rules, governed by what the rule does.
eg.
aare: /** -> /[^/\x00][^\x00]*
rule: /[^/\x00][^\x00]* -> /[^\0000/]([^\0000])*
eg.
echo "/foo { /** rwlkmix, } " | ./apparmor_parser -QT -D rule-exprs -D expr-tree
aare: /foo -> /foo
aare: /** -> /[^/\x00][^\x00]*
rule: /[^/\x00][^\x00]* -> /[^\0000/]([^\0000])*
rule: /[^/\x00][^\x00]*\x00/[^/].* -> /[^\0000/]([^\0000])*\0000/[^/](.)*
DFA: Expression Tree
(/[^\0000/]([^\0000])*(((((((((((((<513>|<2>)|<4>)|<8>)|<16>)|<32>)|<64>)|<8404992>)|<32768>)|<65536>)|<131072>)|<262144>)|<524288>)|<1048576>)|/[^\0000/]([^\0000])*\0000/[^/](.)*((<16>|<32>)|<262144>))
This simple example shows many things
1. The profile name under goes pcre conversion. But since no regular expressions where found
it doesn't generate any expr rules
2. /** is converted into the pcre expression /[^\0000/]([^\0000])*
3. The pcre expression /[^\0000/]([^\0000])* is converted into two rules that are then
converted into expression trees.
The reason for this can not be seen by the output as this is actually triggered by
permissions separation for the rule. In this case the link permission is separated
into what is shown as the second rule: statement.
4. DFA: Expression Tree dump shows how these rules are combined together
You will notice that the rule conversion statement is fairly redundant currently as it just
show pcre to expression tree pcre. This will change when direct aare parsing occurs,
but currently serves to verify the pcre conversion step.
It is not the prettiest patch, as its touching some ugly code that is schedule to be cleaned
up/replaced. eg. convert_aaregex_to_pcre is going to replaced with native parse conversion
from an aare straight to the expression tree, and dfaflag passing will become part of the
rule set.
It changes the table resizing so that there is always sufficient
high entries in the table, preventing bounds violations from
occurring.
Previously the resize allocation was always based on the character
set range for a state, which could be more or less than actually
required, and packing would waste some space when over allocation
was done.
As a result this patch in general results in slightly smaller
transition tables even though it enforcing the minimum required
padding to avoid bounds violations.
are computed and stored in a map, that is not cleaned up. This means that the labeling
is retained across different dfas.
Move the labeling into expr node as this takes less memory than using a map and will
also separates node labeling so its per dfa instead of global. In addition this means
the labeling is cleanedup/freed when the expr tree is freed without any extra work.
each expression tree node and then used as input to create the dfa states.
Currently they are not being freed until the nodes are destroyed, but the information
is no longer needed once the dfa has been created. Cleaning them up early reduces
peak memory usage.
* a non-include related syntax error (errors/modefail.sd)
* multiple successful includes followed by a failed include
(errors/multi_include.sd)
It also fixes two issues with the parser's line counting:
* the count began at 0 (demonstrated by the first testcase's error
being reporting on one line less than it should be), and
* an extra line increment when includes were detected (demonstrated
by the second testcase's error being reported at a line beyond the
correct linenumber.
The existing testcases did not catch these because they were all
based on the first include in the file failing and so the start of
the count from 0 counteracted the extra counted line.
paths. Secondly, the /lib64 -> /lib symlink would mean the
/lib64/ld-linux symlink would incorrectly be generated as
/lib64/ld-N.NN.so which still has a symlink in its path, and thus
apparmor wouldn't permit the access. Fixing by having readlink
canonicalize the entire path.
ack thppt.
when auditd logs get rotated)
- use getgrnam() with setgid when dropping to nobody_group
- add '-u USER' option to drop to this user when running priviliged but
not under sudo. Useful for starting when logged in as root.
- add a read access check before get_logfile_inode() so we don't have to
wait for the timeout in get_logfile_inode()
- set euid only when dropping privileges, instead of using POSIX::setuid()
which sets uid, euid and saved id when starting privileged
- create send_message() function which fork/execs so that we can set the
real uid before calling notify-send (notify-send looks at the real uid
when trying to connect to dbus)
- adjust reopen_logfile() to raise privileges (via euid) before accessing
logfile when $< != $>. Drop them again after open().
- also check for inode change
- update size to use stat
- treat logfile_size like logfile_inode
- update logfile_size and logfile_inode in reopen_logfile()
- add -f option to optionally specify the logfile
- when polling, check to see if the logfile size decreased, and if so, reopen
it. Currently this only works if you can read the file after dropping
privileges
tests. I don't like the solution because it exposes a data structure
definition outside of the only file that should know it's layout.
Also, fixed the Makefile to fail the build when one of the unit test
programs fails. :-(
killall-ing a few things in order to make it stop. And alas, it does seem
to eventually cause kernel hangs with 2.6.32-16. (Committing now before ext4
eats my changes and brain.)
Instead of updating the profile name, allow a profile to have multiple
alternate names. Aliases are now added as alternate names and matched
through the xmatch dfa.
Alias was broken because it when an alias was made the old path was completely
removed and there was no way to specify it. Update it so aliases just add
an new duplicate rule instead.
These replacement routines allow an application to avoid the probing
behavior of earlier version of change_hat. Allowing them to be faster
and have better learning characteristics.
xfail instead of known_{pass,fail}, also have it only reports unexpected
results, error for when result != what it should, and Alert for when it
result is what is should be but is a known problem and hence expected
to report something else.
Also update the regression tests for known problems under AppArmor 2.5,
this does not fix all known problems, (ie hats being removed differently
and hence resulting in unable to load profile errors, and the mknod
problem on alternate runs of the test suite, nor xattrs tests not ensuring
that the fs supports xattrs).
imediately after the current partition being considered, instead of
at the back of the parition list. This does two things, it makes it
more likely the data is in cache, and it also in general results in
more partitions being created in a single pass.
not an algorithmic improvement. It does the same basic algorithm of
test until it can insert the data, but instead of only tracking the
first free entry (and recomputing it each pass). It tracks all
free entries reducing the number of comparisons done and the table
grows in size.
This may actually result in a small loss on small tables, but is a win
for larger tables.
Update the hash calculation to guarentee that states with a different
number of transition entries will be placed in seperate partitions.
This will allow for a better character transition based state comparison.
Add basic Hopcroft based dfa minimization. It currently does a simple
straight state comparison that can be quadratic in time to split partitions.
This is offset however by using hashing to setup the initial partitions so
that the number of states within a partition are relative few.
The hashing of states for initial partition setup is linear in time. This
means the closer the initial partition set is to the final set, the closer
the algorithm is to completing in a linear time. The hashing works as
follows: For each state we know the number of transitions that are not
the default transition. For each of of these we hash the set of letters
it can transition on using a simple djb2 hash algorithm. This creates
a unique hash based on the number of transitions and the input it can
transition on. If a state does not have the same hash we know it can not
the same as another because it either has a different number of transitions
or or transitions on a different set.
To further distiguish states, the number of transitions of each transitions
target state are added into the hash. This serves to further distiguish
states as a transition to a state with a different number of transitions
can not possibly be reduced to an equivalent state.
A further distinction of states is made for accepting states in that
we know each state with a unique set of accept permissions must be in
its own partition to ensure the unique accept permissions are in the
final dfa.
The unreachable state removal is a basic walk of the dfa from the start
state marking all states that are reached. It then sweeps any state not
reached away. This does not do dead state removal where a non accepting
state gets into a loop that will never result in an accepting state.
For now just look at 'name=...' which is usually the last in the log entry,
so validate input against this and output based on it.
TODO: better handle other cases too
This will allow turning on and off various debug dumps as needed.
Multiple dump options can be specified as needed by using multiple
options.
eg. apparmor_parser -D variables
apparmor_parser -D dfa-tree -D dfa-simple-tree
The help option has also been updated to take an optional argument
to display help about give parameters, currently only dump is supported.
eg. apparmor_parser -h # standard help
apparmor_parser -h=dump # dump info about --dump options
Also Enable the dfa expression tree dumps
thing again. Fix to use the kernel's definition of AF_MAX in
linux/socket.h if it's larger than glibc's AF_MAX definition in
sys/socket.h and add a wrapper function so that we don't have include
af_names.h everywhere.
Also, fix memory leaks around the handling of network entries of
policies.
Change_profile was broken so that it couldn't parse expressions that
weren't path based or started with a variable. Furthermore if the name
held any expressions it was not hanlded correctly, as it was being passed
directly to dfa conversion without going through glob -> pcre conversion.
* move network families to filter out into a separate variable to
so that the list doesn't get lost in a complex sed invocation
* pull out the actual macro definitions from linux/socket.h and use
them if glibc's sys/socket.h (really bit/socket.h) hasn't caught up
with the family definitions.
- Update matching regex for reordered kernel audit messages (when they
come through syslog). Ideally, rather than use a regex, the utils would
just use the log parsing library to determine whether it's a log even
of interest.
- fix debugging code write a logfile in /var/log/apparmor and not a
predictable location in /tmp; File::Temp would be the right solution
except that the log file is created in a BEGIN clause, and
File::Temp.new() ends up returning an unopened filehandle in that
situation, so logging fails. Someone with more perl-fu may know how to
fix that.
- fix "Namespcae" tyop
- get rid of sub_name and default_deny from the main profile struct as
they haven't been used for a long time; also eliminates their output
from the debugging output.
- emit dumped parsing structure with only one -d, users were confuzzled
and it was not documented that you needed to use -dd to get it to
output anything if DEBUG wasn't set when compiling.
doesn't work. Making the parser match the documentation, though either
form should still work.
(Based on a secondary element of https://bugs.launchpad.net/bugs/341205)
Change the globbing conversion to include [^\x00]. This reduces cases of
artifical overlap between globbing rules, and link rules. Link rules
are encoded to use a \0 char to seperate the 2 match parts of the rule.
Before this fix a glob * or ** could match against the \0 seperator
resulting the generation of dfa states for that overlap. This of course
can never happen as \0 is not a valid path name character.
In one example stress policy when adding the rule
owner /** rwl,
this change made the difference between having a dfa with 55152 states
and one with 30019
- disable charter, charset merging. This can actually hamper optimization
in some cases and needs special cases added to the factoring code.
The charset code is merged off into its own routines that can be
reenabled at a later time.
- fix a couple bugs in tree simplifications that would cause earlier
exit before the tree had even reached a local minima
I particular the t != c portion of the simplify_tree, would cause
the loop to exit early if it didn't change but other modifications
had been made.
- remove the extra epsnode that was getting added to the created tree
- optimize the forward factor alt loop so that it will find all left
factor matches down the alt subtree without having to loop and recompare
against nodes that were already checked
These changes result in small improvements in most cases, but in some
policies the changes result in very large wins. The early bailout of
optimizations was causing 2.5* as many dfa states in one particular
stress test policy.
- fix-complain.diff
Fixes deny rules in complain mode so that they don't reject events
- mount-capability.diff
Allow confined applications to mount and unmount as long as they
have capability sys_admin
- fix-config.diff
Add the missing SECURITY_NETWORK dependency
- fix-security-param.diff
Make apparmor respect the security= parameter
- securit_default.diff
Add a new kernel config option to allow setting the default LSM,
When multiple LSMs are compiled into the kernel this is often
more desirable than taking the first LSM to register
- fork-tracking.diff
Newer kernels have changed the allocation of child pid until after
the security_clone hook. This breaks AppArmor's fork tracking
for processes that enter the null-complain-profile.
To fix this the parent pid is output with every message. A corresponding
update in the tools also must be done.
- fix-d_namespace_path.diff
It is possible that the root.mnt->mnt_ns has been unmounted, resulting
in an oops. In this case just test for it, and if it happens the
ns_root.mnt passed to __d_path will be NULL resulting in a disconnected
path.
- AppArmor-misc-cleanups.diff
Some miscelleanous cleanups from Miklos Szeredi, covering some
kernel coding style and defaults cleanups
- AppArmor-checkpatch.diff
patch from Miklos Szeredi, to cleanup sparse warnings, and other misc
coding style errors.
Needs love in the form of enhancements to support regexs, all the added
features in upcoming 2.3 release, etc.
Could also stand a bit of refactoring to make the ruby program not suck
up so much ram by writing out profiles as things go along rather than
generating a bunch of large objects and keeping them around.
Fork tracking is broken by the kernel message for clone no longer supplying
the child pid correctly. Instead the parent pid will be output with each
message and the tools will fake a fork when they detect a previously
unknow parent child relationship.
/usr/bin/rsyncd) bnc#408869
The unconfined tool shows:
[...]
29799 /usr/bin/rsync not confined
29799 /usr/bin/rsync not confined
This is because unconfined is grabbing the post symlink resolved exe filename
which for /usr/sbin/rsyncd is /usr/bin/rsync.
To fix this provide both the cmdline and exec name in parenthesis when the
exe name and the cmdline name differ.
For the above example you would see
29799 /usr/bin/rsync (/usr/sbin/rsyncd) not confined
been made but only from the top level. This allows us to get the
optimizations that were missed, while not causing the massive recursive call
explosion we had before.
Description: fix compile on build
Patch from Gentoo community:
- fix up a couple of missing semicolons in syntax (bison compensates
by emitting it's own)
- Fix yet another variable tyop in rc.apparmor.functions
- dump stderr of ls in rc.apparmor.functions to /dev/null
- add an install-unknown make target
alias rules and variable declarations within the preamble of a profile.
This commit adds another testcase for alias rules; one in which there is
an overlapping pair of aliases. The parser parses it, but based on -dd
output, I don't believe it's treating it properly.
Apply tree factoring and simplification techniques to reduce the number of
states used in computing the dfa. This can have an exponential impact
on both space and time for dfa generation.
Acked-By: Steve Beattie <sbeattie@ubuntu.com>
The format of audit messages that are redirected to syslog because
auditd isn't running changed between Hardy and Intrepid and now have
the type=NNNN field before the audit tag like--
Nov 1 22:24:43 box kernel: [ 158.113592] type=1503
audit(1225603483.635:5): operation="inode_permission" requested_mask="r::"
denied_mask="r::" fsuid=7 name="/proc/7034/net/" pid=7034
profile="/usr/sbin/cupsd"
I believe this patch will address the moved type=NNNN field as well as
capturing non-matching logfile input instead of printing it to stdout.
Patch modified by Steve Beattie <sbeattie@ubuntu.com> to take into
account a couple of different situations.
https://bugs.launchpad.net/bugs/271252https://bugzilla.novell.com/show_bug.cgi?id=441381
- flags being dropped from hats
- rules can be poorly split on writing the profile
- identical rules with different permissions are not properly combined, so
that only permissions of the last rule are kept
Added missing capabilities names.
Simple rlimits support. It doesn't care about range of individual limit,
you can add ie -100G stack size or 100M nice. But maybe sufficient?
of rlimits supported by the kernel.
- remove hat rules
- add hat flag for each profile
- fix apparmorfs profile listing code. Used to only return the first
80 or so profiles, and then refuse to output more
removing profiles, as the list is unstable after additions or removals.
- Add the ability to loaded precompiled policy by specifying the -B
option, which can be combined with --add or --replace
- rc.apparmor.functions were not correctly removing profiles on replace and
reload, also convert to using the module interface directly bypassing the
parser.
- fix cx -> named transitions
- fix apparmor_parser -N so that it emits hats as profiles under new kernel
modules. This is the correct behavior as hats are promoted to profiles.
- rpc was failing when passing arrays because the perl is_utf8 string flag
was set even though its only sending numbers but newer HTTP::Message
checks for this is_utf8 and if it finds it aborts.
- fix local profiles
local profiles were failing because
1.) the parameters to serialize_profile were bad
2.) the file location was not getting updated so they would get written
back to the inactive profiles directory
- rework how null transitions are done.
M fix-profile-namespaces.diff
- fix namespaces to use the :namespace: syntax
A cap-set.diff
- allow a profile to set a tasks capabilities similar to fscap
A rlimits.diff
- allow control of a tasks rlimits
key words. Deny is also used to subtract permissions from the
profiles permission set.
the audit key word can be prepended to any file, network, or capability
rule, to force a selective audit when that rule is matched. Audit
permissions accumulate just like standard permissions.
eg.
audit /bin/foo rw,
will force an audit message when the file /bin/foo is opened for
read or write.
audit /etc/shadow w,
/etc/shadow r,
will force an audit message when /etc/shadow is opened for writing.
The audit message is per permission bit so only opening the file
for read access will not, force an audit message.
audit can also be used in block form instead of prepending audit
to every rule.
audit {
/bin/foo rw,
/etc/shadow w,
}
/etc/shadow r, # don't audit r access to /etc/shadow
the deny key word can be prepended to file, network and capability
rules, to result in a denial of permissions when matching that rule.
The deny rule specifically does 3 things
- it gives AppArmor the ability to remember what has been denied
so that the tools don't prompt for what has been denied in
previous profiling sessions.
- it subtracts globally from the allowed permissions. Deny permissions
accumulate in the the deny set just as allow permissions accumulate
then, the deny set is subtracted from the allow set.
- it quiets known rejects. The default audit behavior of deny rules
is to quiet known rejects so that audit logs are not flooded
with already known rejects. To have known rejects logged prepend
the audit keyword to the deny rule. Deny rules do not have a
block form.
eg.
deny /foo/bar rw,
audit deny /etc/shadow w,
audit {
deny owner /blah w,
deny other /foo w,
deny /etc/shadow w,
}
- fix split init so that apparmor can be enabled at the boot command line.
The init was broken so that apparmor couldn't be enabled unless enabled
by default.
M apparmor-fix-lock-letter.diff
- fix the lock letter being reported (z -> k) and update some comments
A apparmor-create-append.diff
- fix semanitc bug where full write perms were needed to create a new file,
where only append is needed.
M fix-link-subset.diff
- partial fix of link subset
A no-safex-link-subset.diff
- more link subset fixes
A audit-log-type-in-syslog.diff
- fix audit type being missing when messages go to syslog. This patch
is needed for apparmor to work when messages go to syslog instead of
auditd. This patch can be dropped when upstream includes the
patch to report audit number when reporting to syslog
A audit-uid.diff
- report the fsuid to the log
A hat_perm.diff
- setup to use hat permissions instead of just profile search for
2.3
A apparmor-failed-name-error.diff
- fix a bug where on failed name resolution no error or information is
output. It now reports info in the status field and includes an
error_code
A extend-x-mods.diff
- extend the x-mods in preparation of audit ctl
A apparmor-secondary-accept.diff
- extend the dfa to have a second accept table used for audit ctl
A apparmor-audit-flags2.diff
- extend apparmor to support audit ctl of individual permissions.
- finish fixing link-subset
A fix-change_profile-namespace.diff
- Not applied, ignore
exits but doesn't have a flags=(X) component.
Use of uninitialized value in substitution (s///) at
/usr/lib/perl5/vendor_perl/Immunix/SubDomain.pm line 4687 (#1)
(W uninitialized) An undefined value was used as if it were already
defined. It was interpreted as a "" or a 0, but maybe it was a mistake.
To suppress this warning assign a defined value to your variables.
To help you figure out what was undefined, perl tells you what operation
you used the undefined value in. Note, however, that perl optimizes your
program and the operation displayed in the warning may not necessarily
appear literally in your program. For example, "that $foo" is
usually optimized into "that " . $foo, and the warning will refer to
the concatenation (.) operator, even though there is no . in your
program.
sends messages to dispatcheres without the type=X string prepended.
So update the library so the dbus dispatcher doesn't have to prepend
the audit type information before trying to parse the message.
users to push/pull/search for profiles in remote
repositories. It is not fully functional at the
moment (the official repository is down) but I'd
like to get feedback on the basic usage. The
options for
push/pull/search/status/getconfig/setconfig
are working (usage/help below). I think the next
step could be a basic gtk UI to give users a
decent UI to manage profiles/repositories.
Feedback welcomed about the usage model -
would a graphical tool make sense?
--------------------------------------------------------
aa-repo.pl --command args
--search [author=XXX] [prog=XXX] [id=XXX]
Search the repository for profiles matching the search criteria
and return the results.
NOTE: One --search switch per option
--verbose|v
Verbosity level. Supply either one or two switches. Two switches
adds full profile text in returned search results.
--push [--profile=XXX|all] [--changelog=XXX]
Push local profiles to repository, uses configured user and upon
overwrite of an existing profile in the repository then prompt
user with a diff for confirmation XXX the name of the application
whose profile should be uploaded or "all" to upload all
profiles. Multiple --profile switches may be passed to supply
multiple profile names
e.g. --push --profile /usr/sbin/mdnsd --profile /usr/sbin/ftp
e.g. --push --profile all
--pull [--author=XXX] [--profile=XXX] or [--id=XXX] [--mode=complain]
pull remote profiles and install on local system
If operation will change local profiles then prompt user with
diff for confirmation
NOTE: One --pull switch per option and there are three acceptable
combinations
--pull --author=XXX
* pull all profiles in the repo for the author
--pull --author=XXX --profile=XXXX
* pull the profile for prog owned by author
--pull --id=XXXX
* pull the profile with id
--pull --mode=complain
* set the profile(s) to complain mode when installed
Profiles are checked for conflicts with currently installed
profiles and presented as a list to the user to confirm and view.
--sync [--up] [--down] [--noconfirm]
Synchronize local profile set with the repository - showing
changes and allowing prompting the user with the diffs and
suggest the newest version to be activated. If the --all option
is passed then treat profiles not marked as remote as new
profiles that will be uploaded to the repository.
--status
Show the current status of the local profile set. This operation
is similar to sync but does not prompt the user to up|down load
changes
--setconfig [url=xxx] [username=xxxx] [password=xxxx] [enabled=(yes|no)]
[upload=(yes|no)]
Set the configuration options for the repository.
NOTE: One --setconfig switch per option
--getconfig|c
Print the current configuration for the repsository
--quiet|q Don't prompt user - assume that all changes should be made.
routines into a standalone perl module.
Factor out the config file reading/writing into a
standalone perl module. The goal here was to
start to break out some of the basic routines
that the tools use into their own independent
modules.
- pass vfsmnt param for cgroups
A fix-user-audit.diff
- nothing
A fix-link-subset.diff
- fix reporting of failed link subsets
A apparmor-fix-lock-letter.diff
- fix the reported lock letter in apparmorfs/matching
- reverted audit request_mask back to requested_mask
A apparmor-fix-sysctl-refcount.diff
- fix a refcount leak in sysctl audit
which means the failure of the tests is known. So known_fail
means the test should fail but is known to succeed and similar
for known_pass.
This allows tests to be marked as having a known problem so that
regressions are useful to those less familure with what is failing
repository. This makes the repository agnostic to profile mode
(complain/enforce) - users must manage this locally via
aa-complain/aa-enforce.
Addresses novell bug: https://bugzilla.novell.com/show_bug.cgi?id=328033
- processing an unknown hat/execute rejection if its not already in the profile
- at the start of processing all the remain events for the profile
Addresses novell bug: https://bugzilla.novell.com/show_bug.cgi?id=328707
$msg="type=APPARMOR msg=audit(1168662182.495:58): PERMITTING r access to /home/matt/projects/change_hat_test/test (test_hat(27871) profile /home/matt/projects/change_hat_test/test_hat active null-complain-profile)";
Sep 13 13:11:13 lizaveta kernel: AppArmor: REJECTING exec(2) of image '/usr/lib/mailman/mail/mailman'. Profile mandatory and not found (local(20700) profile /usr/lib/postfix/local active /usr/lib/postfix/local)
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