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379 Commits
Author SHA1 Message Date
akhanin-dnsfandGitHub 307fc6f062 - Fix bounds check in packed_rr_to_string, it checked the (#1488) 
assembled rr length against the output string length
  dest_len, instead of against the size of the rr buffer it
  writes into. Callers in cachedump.c and remote.c pass a
  dest_len larger than that buffer.
- Unit test for packed_rr_to_string.
 2026-08-06 17:04:05 +02:00
W.C.A. Wijngaards 91ac449bcd Merge branch 'branch-1.25.2' 2026-07-22 11:33:54 +02:00
W.C.A. Wijngaards 4b1635e194 - Fix CVE-2026-56416, Possible heap buffer overflow when validator 
canonicalizes RDATA that contains domain name. Thanks to Qifan
  Zhang, Palo Alto Networks, for the report.
 2026-07-22 10:19:28 +02:00
W.C.A. Wijngaards 2ce2ca3691 - Fix CVE-2026-55717, 'serve-expired-client-timeout' and 'response-ip' 
CNAME redirect could lead to a crash. Thanks to Qifan Zhang, Palo
  Alto Networks, for the report. In addition, thanks to Xin Wang,
  Jiapeng Li, and Jiajia Liu, Northwestern Polytechnical University,
  for also reporting this issue.
 2026-07-22 10:17:32 +02:00
W.C.A. Wijngaards 8a15ffee62 - Fix CVE-2026-54478, DNS Cookie bypass when combined with 
proxy-protocol use. Thanks to Qifan Zhang, Palo Alto Networks,
  for the report.
 2026-07-22 10:16:42 +02:00
W.C.A. Wijngaards fac7584830 - Fix #1474: DoQ responses are never padded - pad-responses 
does not apply to comm_doq (RFC 9250 §5.4 MUST).
 2026-07-20 10:14:26 +02:00
W.C.A. Wijngaards 215e3920ef - Fix that after malloc failure in find_tag_datas, the 
local_alias is cleaned up. Thanks to Qifan Zhang, Palo
  Alto Networks, for the report.
 2026-06-16 10:51:49 +02:00
W.C.A. Wijngaards 8557788699 - Fix that after malloc failure a half-built local_alias does 
not crash the server. Thanks to Qifan Zhang, Palo Alto
  Networks, for the report.
 2026-06-16 10:12:19 +02:00
W.C.A. Wijngaards f68cca4097 - Fix DNAME synthesis from cache that keeps use of 0TTL 
entries in a sliding window. It did not surpass RRSIG
  expiry. Thanks to Qifan Zhang, Palo Alto Networks, for
  the report.
 2026-06-15 16:39:34 +02:00
W.C.A. Wijngaards b1d1dcb3b6 - Fix that dump_cache has a larger buffer for records, 
and it checks that an owner name does not collide with BADRR
  on the input, and changes verbosity on the log of failure in
  rrset to string.  Thanks to Qifan Zhang, Palo Alto Networks,
  for the report.
 2026-06-03 14:51:16 +02:00
W.C.A. Wijngaards fbbe95ba5b - Fix that msgencode insert_query has the correct assertion, 
for a local_alias. Thanks to Qifan Zhang, Palo Alto Networks,
  for the report.
 2026-05-27 12:20:04 +02:00
W.C.A. Wijngaards 3692517a41 Merge branch 'branch-1.25.1' 2026-05-20 11:19:56 +02:00
W.C.A. Wijngaards dae7a37974 - Fix CVE-2026-44390, Unbounded name compression in certain cases 
causes degradation of service. Thanks to Qifan Zhang, Palo Alto
  Networks, for the report.
 2026-05-20 10:21:26 +02:00
W.C.A. Wijngaards ef5ca84360 - Fix CVE-2026-41292, Parsing a long list of incoming EDNS options 
degrades performance. Thanks to GitHub user 'N0zoM1z0', also Qifan
  Zhang from Palo Alto Networks, for the report.
 2026-05-20 10:18:23 +02:00
W.C.A. Wijngaards fe946ba4e9 - Fix CVE-2026-42944, Heap overflow and crash with multiple nsid, 
cookie, padding EDNS options. Thanks to Qifan Zhang, Palo Alto
  Networks, for the report.
 2026-05-20 10:13:55 +02:00
W.C.A. Wijngaards 8ada1bd88d - Fix to relax assertions after the TTL 0 handling change. 
This relaxes an assertion in cachedb (it fails instead),
  and for packet_rrset_copy_region.
 2026-05-08 10:09:41 +02:00
W.C.A. Wijngaards 84ac7e1b58 - Fix ttl comparisons in rdata_copy for 32bit signed or unsigned. 2026-04-17 13:27:41 +02:00
W.C.A. Wijngaards a296b248b0 - For #1411: Fix that the lookup for DNAME uses flag. Fix assertion 
in expired calc debug routine.
 2026-03-03 17:44:31 +01:00
nnarayanamurthyandGitHub fe10bc7682 QNX Porting support for unbound branch-1.24.1 (#1388) 
* qnx Porting support for version release-1.24.1

* updating __QNXNTO__ with __QNX__
 2026-01-21 13:12:13 +01:00
Yorgos Thessalonikefs 44659cb3bf - Use the same EDE removal logic when encoding errors as when encoding 
replies.
 2025-12-31 16:22:15 +01:00
Yorgos Thessalonikefs 35f6fd47fb - Test for nonstring attribute in configure and add 
nonstring attribute annotations.
 2025-09-26 16:23:55 +02:00
Yorgos Thessalonikefs e2bf773089 Merge branch 'features/no-ttl-zero-cacherep' 2025-09-19 14:56:04 +02:00
Yorgos ThessalonikefsGitHubWouter Wijngaards
 		bc61034f60 code review: use proper roundrobin index 
Co-authored-by: Wouter Wijngaards <wcawijngaards@users.noreply.github.com>
 2025-09-17 12:19:20 +02:00
Yorgos Thessalonikefs 2dd821c257 - Too many quotes for the EDE message debug printout. 2025-09-17 11:27:16 +02:00
Yorgos Thessalonikefs c3a8d5251f - Small debug output improvement when attaching an EDE. 2025-09-15 12:06:49 +02:00
Yorgos Thessalonikefs 73e408f1d0 A few changes for TTL processing: 
- Cached messages that reach 0 TTL are considered expired. This prevents
  Unbound itself from issuing replies with TTL 0 and possibly causing a
  thundering herd at the last second. Upstream replies of TTL 0 still
  get the usual pass-through but they are not considered for caching
  from Unbound or any of its caching modules.
- 'serve-expired-reply-ttl' is changed and is now capped by the original
  TTL value of the record to try and make some sense when replying
  with expired records.
- TTL decoding was updated to adhere to RFC8767 section 4 where a set
  high-order bit means the value is positive instead of 0.
 2025-09-15 10:03:35 +02:00
Yorgos Thessalonikefs d521135f66 Merge branch 'master' into features/no-ttl-zero-cacherep 2025-09-12 15:24:06 +02:00
W.C.A. Wijngaards 752a3f7f52 - Fix to whitespace in dname_str. 2025-08-07 16:19:10 +02:00
W.C.A. Wijngaards 08d59c9a78 - Fix dname_str for printout of long names. Thanks to Jan Komissar 
for the fix.
 2025-08-07 09:45:02 +02:00
Jose Luis DuranandGitHub 41c55ffac1 Fix typos (#1299) 2025-07-02 10:50:49 +02:00
Yorgos Thessalonikefs 9201c75013 - Fix for consistent use of local zone CNAME alias for configured auth 
zones. Now it also applies to downstream configured auth zones.
 2025-06-17 15:03:29 +02:00
W.C.A. Wijngaards e4cf7aeccf - Fix header return value description for skip_pkt_rrs and 
parse_edns_from_query_pkt.
 2025-06-12 12:17:01 +02:00
W.C.A. Wijngaards a8aa1dbbe1 - Fix conditional expressions with parentheses for bitwise and. 2025-06-11 16:42:43 +02:00
W.C.A. Wijngaards 565bce670c - Fix comment for the dname_remove_label_limit_len function. 2025-06-05 11:11:32 +02:00
Yorgos Thessalonikefs 9152c914af - Fix #1282: log-destaddr fail on long ipv6 addresses. 2025-05-13 11:02:58 +02:00
Yorgos ThessalonikefsandGitHub 4e23523d1a Fix auth nsec3 code (#1280) 
- Fix NSEC3 code to not break on broken auth zones that include unsigned
  out of zone (above apex) data. Could lead to hang while trying to
  prove a wildcard answer.
  Reported by Dmitrii Kuvaiskii from Amazon Web Services.

- Tests for NSEC3 auth zones with out of zone data.
 2025-05-12 14:26:47 +02:00
W.C.A. Wijngaards 16ee7cf944 - Fix for print of connection type in log-replies for dot and doh. 2025-04-10 09:33:51 +02:00
Yorgos Thessalonikefs 9de159b96b - For #1175, the default value of serve-expired-ttl is set to 86400 
(1 day) as suggested by RFC8767.
 2024-12-03 13:09:51 +01:00
Yorgos Thessalonikefs f46acec35f - For #1189, homogenize the input buffer size for dname_str(). 2024-12-02 11:53:56 +01:00
Yorgos Thessalonikefs 1cd2fb3b9d - For #1189, add unit tests for dname_str() and debug check the input 
buffer size.
 2024-12-02 10:03:35 +01:00
wenxuan70 06fb30d0a0 Fix the dname_str method to cause conversion errors when the domain name length is 255 2024-11-24 17:53:23 +08:00
W.C.A. Wijngaards 50fcf71f04 - ttl-zero-cacherep, Responses in the last second of their cache TTL, 
get an extra second. That makes the TTL not 0, since they are from
  cache and can be cached by the client.
 2024-11-11 15:43:10 +01:00
Yorgos Thessalonikefs 490585bf29 Merge branch 'release-1.21.1' 2024-10-03 18:14:01 +02:00
Yorgos Thessalonikefs b7c61d7cc2 - Fix CVE-2024-8508, unbounded name compression could lead to denial of 
service.
 2024-10-03 17:41:20 +02:00
Yorgos ThessalonikefsandGitHub 2e398d51ba Fix cache update when serve expired is used (#1143) 
- Fix cache update when serve expired is used in order to not evict
  still usable expired records. Modules are forbidden to update the
  cache if their answer is DNSSEC unchecked or bogus and a valid
  (expired) entry already exists. Bogus replies from the validator are
  also discarded in favor of existing (expired) valid replies.

- serve-expired-ttl-reset should try to keep expired records in the
  cache in case they are reset.
 2024-09-24 16:47:04 +02:00
W.C.A. Wijngaards 1e0cf1e86b - Merge patch to fix for glue that is outside of zone, with 
`harden-unverified-glue`, from Karthik Umashankar (Microsoft).
  Enabling this option protects the Unbound resolver against bad
  glue, that is unverified out of zone glue, by resolving them.
  It uses the records as last resort if there is no other working
  glue.
 2024-08-23 08:56:48 +02:00
Wouter WijngaardsGitHubYorgos Thessalonikefs
 		ad21dbd1c2 Cookie secret file (#1090) 
* - cookie-secret-file, define struct.

* - cookie-secret-file, add config option, create, read and delete struct.

* - cookie-secret-file, check cookie secrets for cookie validation.

* - cookie-secret-file, unbound-control add_cookie_secret, drop_cookie_secret,
  activate_cookie_secret and print_cookie_secrets.

* - cookie-secret-file, test and fix locks, renew writes a fresh cookie,
  staging cookies get a fresh cookie and spelling in error message.

* - cookie-secret-file, remove unused variable from cookie file unit test.

* Remove unshare and faketime dependencies for cookie_file test; documentation nits.

---------

Co-authored-by: Yorgos Thessalonikefs <yorgos@nlnetlabs.nl>
 2024-08-02 13:32:08 +02:00
W.C.A. Wijngaards 5bea29b01c - For #1110: Test for fallthrough attribute in configure and add 
fallthrough attribute annotations.
 2024-07-23 09:47:42 +02:00
Yorgos ThessalonikefsandGitHub 6f030e9672 Proper parent identification for dynamically entered local zones (#1076) 
- Fix #1059: Intermittent DNS blocking failure with local-zone and
  always_nxdomain. Addition of local_zones dynamically via
  unbound-control was not finding the zone's parent correctly.
 2024-05-24 15:21:40 +02:00
Yorgos Thessalonikefs 025881d0e9 - Introduce 'cache-min-negative-ttl' option to bound the minimum TTL for 
negative answers overriding 'cache-min-ttl'.
 2024-03-12 11:24:59 +01:00