SUSE SLED15 / SLES15 / openSUSE 15 Security Update : bind (SUSE-SU-2024:2636-1)

high Nessus Plugin ID 204895

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Synopsis

The remote SUSE host is missing one or more security updates.

Description

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2024:2636-1 advisory.

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 responses 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)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected bind, bind-doc and / or bind-utils packages.

Plugin Details

Severity: High

ID: 204895

File Name: suse_SU-2024-2636-1.nasl

Version: 1.1

Type: local

Agent: unix

Family: SuSE Local Security Checks

Published: 7/31/2024

Updated: 7/31/2024

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2024-1975

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:novell:suse_linux:15, p-cpe:/a:novell:suse_linux:bind, p-cpe:/a:novell:suse_linux:bind-doc, p-cpe:/a:novell:suse_linux:bind-utils

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 7/30/2024

Vulnerability Publication Date: 7/23/2024

Reference Information

CVE: CVE-2024-0760, CVE-2024-1737, CVE-2024-1975, CVE-2024-4076

IAVA: 2024-A-0442

SuSE: SUSE-SU-2024:2636-1

Detections

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