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update key checks in lib/bind9/check.c and fix checkconf test

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- any use of trusted or static keys for the root zone will now
  elicit a warning, regardless of what the keys may be
- ditto for any use of a key for dlv.isc.org, static or managed
This commit is contained in:
Evan Hunt
2018-10-03 11:46:06 -07:00
parent a00e54cf0e
commit 82f5bce1bb
8 changed files with 198 additions and 83 deletions
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155
lib/bind9/check.c
View File

@@ -3055,9 +3055,12 @@ check_servers(const cfg_obj_t *config, const cfg_obj_t *voptions,
return (result);
}
#define ROOT_KSK_2010 0x1
#define ROOT_KSK_2017 0x2
#define DLV_KSK_KEY 0x4
#define ROOT_KSK_STATIC 0x01
#define ROOT_KSK_MANAGED 0x02
#define ROOT_KSK_ANY 0x03
#define ROOT_KSK_2010 0x04
#define ROOT_KSK_2017 0x08
#define DLV_KSK_KEY 0x10
static isc_result_t
check_trusted_key(const cfg_obj_t *key, bool managed,
@@ -3134,10 +3137,12 @@ check_trusted_key(const cfg_obj_t *key, bool managed,
if ((alg == DST_ALG_RSASHA1) &&
r.length > 1 && r.base[0] == 1 && r.base[1] == 3)
{
cfg_obj_log(key, logctx, ISC_LOG_WARNING,
"%s key '%s' has a weak exponent",
managed ? "initializing" : "static",
keynamestr);
}
}
if (result == ISC_R_SUCCESS && dns_name_equal(keyname, dns_rootname)) {
@@ -3174,7 +3179,8 @@ check_trusted_key(const cfg_obj_t *key, bool managed,
0x6a, 0xab, 0x02, 0x64, 0x4b, 0x28, 0x13, 0xf5,
0x75, 0xfc, 0x21, 0x60, 0x1e, 0x0d, 0xee, 0x49,
0xcd, 0x9e, 0xe9, 0x6a, 0x43, 0x10, 0x3e, 0x52,
0x4d, 0x62, 0x87, 0x3d };
0x4d, 0x62, 0x87, 0x3d
};
static const unsigned char root_ksk_2017[] = {
0x03, 0x01, 0x00, 0x01, 0xac, 0xff, 0xb4, 0x09,
0xbc, 0xc9, 0x39, 0xf8, 0x31, 0xf7, 0xa1, 0xe5,
@@ -3208,58 +3214,34 @@ check_trusted_key(const cfg_obj_t *key, bool managed,
0x9e, 0x79, 0x2a, 0xb5, 0x01, 0xe6, 0xa8, 0xa1,
0xca, 0x51, 0x9a, 0xf2, 0xcb, 0x9b, 0x5f, 0x63,
0x67, 0xe9, 0x4c, 0x0d, 0x47, 0x50, 0x24, 0x51,
0x35, 0x7b, 0xe1, 0xb5 };
0x35, 0x7b, 0xe1, 0xb5
};
/*
* Flag any use of a root key, regardless of content.
*/
*keyflags |= (managed ? ROOT_KSK_MANAGED : ROOT_KSK_STATIC);
if (flags == 257 && proto == 3 && alg == 8 &&
isc_buffer_usedlength(&b) == sizeof(root_ksk_2010) &&
!memcmp(keydata, root_ksk_2010, sizeof(root_ksk_2010))) {
!memcmp(keydata, root_ksk_2010, sizeof(root_ksk_2010)))
{
*keyflags |= ROOT_KSK_2010;
}
if (flags == 257 && proto == 3 && alg == 8 &&
isc_buffer_usedlength(&b) == sizeof(root_ksk_2017) &&
!memcmp(keydata, root_ksk_2017, sizeof(root_ksk_2017))) {
!memcmp(keydata, root_ksk_2017, sizeof(root_ksk_2017)))
{
*keyflags |= ROOT_KSK_2017;
}
}
if (result == ISC_R_SUCCESS && dns_name_equal(keyname, &dlviscorg)) {
static const unsigned char dlviscorgkey[] = {
0x04, 0x40, 0x00, 0x00, 0x03, 0xc7, 0x32, 0xef,
0xf9, 0xa2, 0x7c, 0xeb, 0x10, 0x4e, 0xf3, 0xd5,
0xe8, 0x26, 0x86, 0x0f, 0xd6, 0x3c, 0xed, 0x3e,
0x8e, 0xea, 0x19, 0xad, 0x6d, 0xde, 0xb9, 0x61,
0x27, 0xe0, 0xcc, 0x43, 0x08, 0x4d, 0x7e, 0x94,
0xbc, 0xb6, 0x6e, 0xb8, 0x50, 0xbf, 0x9a, 0xcd,
0xdf, 0x64, 0x4a, 0xb4, 0xcc, 0xd7, 0xe8, 0xc8,
0xfb, 0xd2, 0x37, 0x73, 0x78, 0xd0, 0xf8, 0x5e,
0x49, 0xd6, 0xe7, 0xc7, 0x67, 0x24, 0xd3, 0xc2,
0xc6, 0x7f, 0x3e, 0x8c, 0x01, 0xa5, 0xd8, 0x56,
0x4b, 0x2b, 0xcb, 0x7e, 0xd6, 0xea, 0xb8, 0x5b,
0xe9, 0xe7, 0x03, 0x7a, 0x8e, 0xdb, 0xe0, 0xcb,
0xfa, 0x4e, 0x81, 0x0f, 0x89, 0x9e, 0xc0, 0xc2,
0xdb, 0x21, 0x81, 0x70, 0x7b, 0x43, 0xc6, 0xef,
0x74, 0xde, 0xf5, 0xf6, 0x76, 0x90, 0x96, 0xf9,
0xe9, 0xd8, 0x60, 0x31, 0xd7, 0xb9, 0xca, 0x65,
0xf8, 0x04, 0x8f, 0xe8, 0x43, 0xe7, 0x00, 0x2b,
0x9d, 0x3f, 0xc6, 0xf2, 0x6f, 0xd3, 0x41, 0x6b,
0x7f, 0xc9, 0x30, 0xea, 0xe7, 0x0c, 0x4f, 0x01,
0x65, 0x80, 0xf7, 0xbe, 0x8e, 0x71, 0xb1, 0x3c,
0xf1, 0x26, 0x1c, 0x0b, 0x5e, 0xfd, 0x44, 0x64,
0x63, 0xad, 0x99, 0x7e, 0x42, 0xe8, 0x04, 0x00,
0x03, 0x2c, 0x74, 0x3d, 0x22, 0xb4, 0xb6, 0xb6,
0xbc, 0x80, 0x7b, 0xb9, 0x9b, 0x05, 0x95, 0x5c,
0x3b, 0x02, 0x1e, 0x53, 0xf4, 0x70, 0xfe, 0x64,
0x71, 0xfe, 0xfc, 0x30, 0x30, 0x24, 0xe0, 0x35,
0xba, 0x0c, 0x40, 0xab, 0x54, 0x76, 0xf3, 0x57,
0x0e, 0xb6, 0x09, 0x0d, 0x21, 0xd9, 0xc2, 0xcd,
0xf1, 0x89, 0x15, 0xc5, 0xd5, 0x17, 0xfe, 0x6a,
0x5f, 0x54, 0x99, 0x97, 0xd2, 0x6a, 0xff, 0xf8,
0x35, 0x62, 0xca, 0x8c, 0x7c, 0xe9, 0x4f, 0x9f,
0x64, 0xfd, 0x54, 0xad, 0x4c, 0x33, 0x74, 0x61,
0x4b, 0x96, 0xac, 0x13, 0x61 };
if (flags == 257 && proto == 3 && alg == 5 &&
isc_buffer_usedlength(&b) == sizeof(dlviscorgkey) &&
!memcmp(keydata, dlviscorgkey, sizeof(dlviscorgkey))) {
*keyflags |= DLV_KSK_KEY;
}
/*
* Flag any use of dlv.isc.org, regardless of content.
*/
if (dns_name_equal(keyname, &dlviscorg)) {
*keyflags |= DLV_KSK_KEY;
}
return (result);
@@ -3686,10 +3668,12 @@ check_viewconf(const cfg_obj_t *config, const cfg_obj_t *voptions,
* Check trusted-keys and managed-keys.
*/
tkeys = NULL;
if (voptions != NULL)
if (voptions != NULL) {
(void)cfg_map_get(voptions, "trusted-keys", &tkeys);
if (tkeys == NULL)
}
if (tkeys == NULL) {
(void)cfg_map_get(config, "trusted-keys", &tkeys);
}
tflags = 0;
for (element = cfg_list_first(tkeys);
@@ -3699,33 +3683,37 @@ check_viewconf(const cfg_obj_t *config, const cfg_obj_t *voptions,
const cfg_obj_t *keylist = cfg_listelt_value(element);
for (element2 = cfg_list_first(keylist);
element2 != NULL;
element2 = cfg_list_next(element2)) {
element2 = cfg_list_next(element2))
{
obj = cfg_listelt_value(element2);
tresult = check_trusted_key(obj, false, &tflags,
logctx);
if (tresult != ISC_R_SUCCESS)
tresult = check_trusted_key(obj, false,
&tflags, logctx);
if (tresult != ISC_R_SUCCESS) {
result = tresult;
}
}
}
if ((tflags & ROOT_KSK_2010) != 0 && (tflags & ROOT_KSK_2017) == 0) {
cfg_obj_log(tkeys, logctx, ISC_LOG_WARNING,
"trusted-key for root from 2010 without updated "
"trusted-key from 2017: THIS WILL FAIL AFTER "
"KEY ROLLOVER");
if ((tflags & ROOT_KSK_STATIC) != 0) {
cfg_obj_log(keys, logctx, ISC_LOG_WARNING,
"trusted-keys entry for the root zone "
"WILL FAIL after key rollover - use "
"managed-keys with initial-key instead.");
}
if ((tflags & DLV_KSK_KEY) != 0) {
cfg_obj_log(tkeys, logctx, ISC_LOG_WARNING,
"trusted-key for dlv.isc.org still present; "
"dlv.isc.org has been shut down");
cfg_obj_log(keys, logctx, ISC_LOG_WARNING,
"trusted-keys entry for dlv.isc.org is still "
"present: dlv.isc.org has been shut down");
}
mkeys = NULL;
if (voptions != NULL)
if (voptions != NULL) {
(void)cfg_map_get(voptions, "managed-keys", &mkeys);
if (mkeys == NULL)
}
if (keys == NULL) {
(void)cfg_map_get(config, "managed-keys", &mkeys);
}
mflags = 0;
for (element = cfg_list_first(mkeys);
@@ -3740,31 +3728,44 @@ check_viewconf(const cfg_obj_t *config, const cfg_obj_t *voptions,
obj = cfg_listelt_value(element2);
tresult = check_trusted_key(obj, true, &mflags,
logctx);
if (tresult != ISC_R_SUCCESS)
if (tresult != ISC_R_SUCCESS) {
result = tresult;
}
}
}
if ((mflags & ROOT_KSK_STATIC) != 0) {
cfg_obj_log(keys, logctx, ISC_LOG_WARNING,
"managed-keys static-key entry for the root zone "
"WILL FAIL after key rollover - use "
"managed-keys with initial-key instead.");
}
if ((mflags & ROOT_KSK_2010) != 0 && (mflags & ROOT_KSK_2017) == 0) {
cfg_obj_log(mkeys, logctx, ISC_LOG_WARNING,
"managed-key for root from 2010 without updated "
"managed-key from 2017");
cfg_obj_log(keys, logctx, ISC_LOG_WARNING,
"managed-keys initial-key entry for the root zone "
"uses the 2010 key without the updated "
"2017 key");
}
if ((tflags & ROOT_KSK_ANY) != 0 && (mflags & ROOT_KSK_ANY) != 0) {
cfg_obj_log(keys, logctx, ISC_LOG_WARNING,
"both trusted-keys and managed-keys for the "
"root zone are present");
}
if ((mflags & ROOT_KSK_ANY) == ROOT_KSK_ANY) {
cfg_obj_log(keys, logctx, ISC_LOG_WARNING,
"both initial-key and static-key entries for the "
"root zone are present");
}
if ((mflags & DLV_KSK_KEY) != 0) {
cfg_obj_log(mkeys, logctx, ISC_LOG_WARNING,
"managed-key for dlv.isc.org still present; "
cfg_obj_log(keys, logctx, ISC_LOG_WARNING,
"managed-keys entry for dlv.isc.org still present; "
"dlv.isc.org has been shut down");
}
if ((tflags & (ROOT_KSK_2010|ROOT_KSK_2017)) != 0 &&
(mflags & (ROOT_KSK_2010|ROOT_KSK_2017)) != 0)
{
cfg_obj_log(mkeys, logctx, ISC_LOG_WARNING,
"both trusted-keys and managed-keys for the ICANN "
"root are present");
}
obj = NULL;
if (voptions != NULL) {
(void)cfg_map_get(voptions, "dnssec-validation", &obj);