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The new :cve: Sphinx role takes a CVE number as an argument and creates a hyperlink to the relevant ISC Knowledgebase document that might have more up-to-date or verbose information than the relevant release note. This makes reaching ISC Knowledgebase pages directly from the release notes easier. Make all CVE references in the release notes use the new Sphinx role.
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3.7 KiB
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100 lines
3.7 KiB
ReStructuredText
.. Copyright (C) Internet Systems Consortium, Inc. ("ISC")
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..
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.. SPDX-License-Identifier: MPL-2.0
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..
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.. This Source Code Form is subject to the terms of the Mozilla Public
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.. License, v. 2.0. If a copy of the MPL was not distributed with this
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.. file, you can obtain one at https://mozilla.org/MPL/2.0/.
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..
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.. See the COPYRIGHT file distributed with this work for additional
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.. information regarding copyright ownership.
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Notes for BIND 9.19.17
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----------------------
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Security Fixes
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~~~~~~~~~~~~~~
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- Previously, sending a specially crafted message over the control
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channel could cause the packet-parsing code to run out of available
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stack memory, causing :iscman:`named` to terminate unexpectedly.
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This has been fixed. :cve:`2023-3341`
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ISC would like to thank Eric Sesterhenn from X41 D-Sec GmbH for
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bringing this vulnerability to our attention. :gl:`#4152`
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New Features
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~~~~~~~~~~~~
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- Support for User Statically Defined Tracing (USDT) probes has been
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added. These probes enable fine-grained application tracing and
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introduce no overhead when they are not enabled. :gl:`#4041`
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- The client-side support of the EDNS EXPIRE option has been expanded to
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include IXFR and AXFR query types. This enhancement enables
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:iscman:`named` to perform AXFR and IXFR queries while incorporating
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the EDNS EXPIRE option. :gl:`#4170`
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Removed Features
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~~~~~~~~~~~~~~~~
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- The :any:`dnssec-must-be-secure` option has been deprecated and will
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be removed in a future release. :gl:`#4263`
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Feature Changes
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~~~~~~~~~~~~~~~
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- Compiling with jemalloc versions older than 4.0.0 is no longer
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supported; those versions do not provide the features required by
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current BIND 9 releases. :gl:`#4296`
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- If the ``server`` command is specified, :iscman:`nsupdate` now honors
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the :option:`nsupdate -v` option for SOA queries by sending both the
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UPDATE request and the initial query over TCP. :gl:`#1181`
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Bug Fixes
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~~~~~~~~~
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- The value of the If-Modified-Since header in the statistics channel
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was not being correctly validated for its length, potentially allowing
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an authorized user to trigger a buffer overflow. Ensuring the
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statistics channel is configured correctly to grant access exclusively
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to authorized users is essential (see the :any:`statistics-channels`
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block definition and usage section). :gl:`#4124`
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This issue was reported independently by Eric Sesterhenn of X41 D-Sec
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GmbH and Cameron Whitehead.
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- The Content-Length header in the statistics channel was lacking proper
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bounds checking. A negative or excessively large value could
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potentially trigger an integer overflow and result in an assertion
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failure. :gl:`#4125`
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This issue was reported by Eric Sesterhenn of X41 D-Sec GmbH.
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- Several memory leaks caused by not clearing the OpenSSL error stack
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were fixed. :gl:`#4159`
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This issue was reported by Eric Sesterhenn of X41 D-Sec GmbH.
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- The introduction of ``krb5-subdomain-self-rhs`` and
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``ms-subdomain-self-rhs`` UPDATE policies accidentally caused
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:iscman:`named` to return SERVFAIL responses to deletion requests for
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non-existent PTR and SRV records. This has been fixed. :gl:`#4280`
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- The :any:`stale-refresh-time` feature was mistakenly disabled when the
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server cache was flushed by :option:`rndc flush`. This has been fixed.
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:gl:`#4278`
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- BIND's memory consumption has been improved by implementing dedicated
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jemalloc memory arenas for sending buffers. This optimization ensures
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that memory usage is more efficient and better manages the return of
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memory pages to the operating system. :gl:`#4038`
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Known Issues
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~~~~~~~~~~~~
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- There are no new known issues with this release. See :ref:`above
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<relnotes_known_issues>` for a list of all known issues affecting this
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BIND 9 branch.
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