[SUSE-SU-2024:2636-1] Security update for bind
Severity
Important
CVEs
4
Security update for bind
This update for bind fixes the following issues:
Update to release 9.18.28
Security fixes:
- CVE-2024-0760: Fixed a flood of DNS messages over TCP may make the server unstable (bsc#1228255)
- CVE-2024-1737: Fixed BIND's database will be slow if a very large number of RRs exist at the same name (bsc#1228256)
- CVE-2024-1975: Fixed SIG(0) can be used to exhaust CPU resources (bsc#1228257)
- CVE-2024-4076: Fixed assertion failure when serving both stale cache data and authoritative zone content (bsc#1228258)
Changelog:
- Command-line options for IPv4-only (named -4) and IPv6-only (named -6) modes are now respected for zone primaries, also-notify, and parental-agents.
- An RPZ response’s SOA record TTL was set to 1 instead of the SOA TTL, if add-soa was used. This has been fixed.
- When a query related to zone maintenance (NOTIFY, SOA) timed out close to a view shutdown (triggered e.g. by rndc reload), named could crash with an assertion failure. This has been fixed.
- The statistics channel counters that indicated the number of currently connected TCP IPv4/IPv6 clients were not properly adjusted in certain failure scenarios. This has been fixed.
- Some servers that could not be reached due to EHOSTDOWN or ENETDOWN conditions were incorrectly prioritized during server selection. These are now properly handled as unreachable.
- On some systems the libuv call may return an error code when sending a TCP reset for a connection, which triggers an assertion failure in named. This error condition is now dealt with in a more graceful manner, by logging the incident and shutting down the connection.
- Changes to listen-on statements were ignored on reconfiguration unless the port or interface address was changed, making it impossible to change a related listener transport type. That issue has been fixed.
- A bug in the keymgr code unintentionally slowed down some DNSSEC key rollovers. This has been fixed.
- Some ISO 8601 durations were accepted erroneously, leading to shorter durations than expected. This has been fixed
- A regression in cache-cleaning code enabled memory use to grow significantly more quickly than before, until the configured max-cache-size limit was reached. This has been fixed.
- Using rndc flush inadvertently caused cache cleaning to become less effective. This could ultimately lead to the configured max-cache-size limit being exceeded and has now been fixed.
- The logic for cleaning up expired cached DNS records was tweaked to be more aggressive. This change helps with enforcing max-cache-ttl and max-ncache-ttl in a timely manner.
- It was possible to trigger a use-after-free assertion when the overmem cache cleaning was initiated. This has been fixed. New Features:
- A new option signatures-jitter has been added to dnssec-policy to allow signature expirations to be spread out over a period of time.
- The statistics channel now includes counters that indicate the number of currently connected TCP IPv4/IPv6 clients.
- Added RESOLVER.ARPA to the built in empty zones. Feature Changes:
- DNSSEC signatures that are not valid because the current time falls outside the signature inception and expiration dates are skipped instead of causing an immediate validation failure. Security Fixes:
- A malicious DNS client that sent many queries over TCP but never read the responses could cause a server to respond slowly or not at all for other clients. This has been fixed. (CVE-2024-0760)
- It is possible to craft excessively large resource records sets, which have the effect of slowing down database processing. This has been addressed by adding a configurable limit to the number of records that can be stored per name and type in a cache or zone database. The default is 100, which can be tuned with the new max-records-per-type option.
- It is possible to craft excessively large numbers of resource record types for a given owner name, which has the effect of slowing down database processing. This has been addressed by adding a configurable limit to the number of records that can be stored per name and type in a cache or zone database. The default is 100, which can be tuned with the new max-types-per-name option. (CVE-2024-1737)
- Validating DNS messages signed using the SIG(0) protocol (RFC 2931) could cause excessive CPU load, leading to a denial-of-service condition. Support for SIG(0) message validation was removed from this version of named. (CVE-2024-1975)
- Due to a logic error, lookups that triggered serving stale data and required lookups in local authoritative zone data could have resulted in an assertion failure. This has been fixed.
- Potential data races were found in our DoH implementation, related to HTTP/2 session object management and endpoints set object management after reconfiguration. These issues have been fixed.
- When looking up the NS records of parent zones as part of looking up DS records, it was possible for named to trigger an assertion failure if serve-stale was enabled. This has been fixed. (CVE-2024-4076)
- ID
- SUSE-SU-2024:2636-1
- Severity
- important
- URL
- https://www.suse.com/support/update/announcement/2024/suse-su-20242636-1/
- Published
-
2024-07-30T07:14:23
(6 weeks ago) - Modified
-
2024-07-30T07:14:23
(6 weeks ago) - Rights
- Copyright 2024 SUSE LLC. All rights reserved.
- Other Advisories
-
- ALAS2-2024-2616
- ALPINE:CVE-2024-0760
- ALPINE:CVE-2024-1737
- ALPINE:CVE-2024-1975
- ALPINE:CVE-2024-4076
- ALSA-2024:5231
- ALSA-2024:5390
- ALSA-2024:5524
- DSA-5734-1
- ELSA-2024-5231
- ELSA-2024-5390
- ELSA-2024-5524
- FEDORA-2024-8af1780fdf
- FEDORA-2024-ef8a7031e7
- RHSA-2024:5231
- RHSA-2024:5390
- RHSA-2024:5524
- SSA:2024-205-01
- SUSE-SU-2024:2810-1
- SUSE-SU-2024:2811-1
- SUSE-SU-2024:2862-1
- SUSE-SU-2024:2863-1
- SUSE-SU-2024:2868-1
- USN-6909-1
- USN-6909-2
- USN-6909-3
Source | # ID | Name | URL |
---|---|---|---|
Suse | SUSE ratings | https://www.suse.com/support/security/rating/ | |
Suse | URL of this CSAF notice | https://ftp.suse.com/pub/projects/security/csaf/suse-su-2024_2636-1.json | |
Suse | URL for SUSE-SU-2024:2636-1 | https://www.suse.com/support/update/announcement/2024/suse-su-20242636-1/ | |
Suse | E-Mail link for SUSE-SU-2024:2636-1 | https://lists.suse.com/pipermail/sle-updates/2024-July/036147.html | |
Bugzilla | SUSE Bug 1228255 | https://bugzilla.suse.com/1228255 | |
Bugzilla | SUSE Bug 1228256 | https://bugzilla.suse.com/1228256 | |
Bugzilla | SUSE Bug 1228257 | https://bugzilla.suse.com/1228257 | |
Bugzilla | SUSE Bug 1228258 | https://bugzilla.suse.com/1228258 | |
CVE | SUSE CVE CVE-2024-0760 page | https://www.suse.com/security/cve/CVE-2024-0760/ | |
CVE | SUSE CVE CVE-2024-1737 page | https://www.suse.com/security/cve/CVE-2024-1737/ | |
CVE | SUSE CVE CVE-2024-1975 page | https://www.suse.com/security/cve/CVE-2024-1975/ | |
CVE | SUSE CVE CVE-2024-4076 page | https://www.suse.com/security/cve/CVE-2024-4076/ |
# CVE | Description | CVSS | EPSS | EPSS Trend (30 days) | Affected Products | Weaknesses | Security Advisories | Exploits | PoC | Pubblication Date | Modification Date |
---|---|---|---|---|---|---|---|---|---|---|---|
# CVE | Description | CVSS | EPSS | EPSS Trend (30 days) | Affected Products | Weaknesses | Security Advisories | PoC | Pubblication Date | Modification Date |