Security update for dnsmasq

Announcement ID: SUSE-SU-2025:20118-1
Release Date: 2025-02-03T09:22:41Z
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2023-28450 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
  • CVE-2023-28450 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2023-28450 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2023-50387 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2023-50387 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2023-50387 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2023-50868 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2023-50868 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Affected Products:
  • SUSE Linux Micro 6.0

An update that solves three vulnerabilities can now be installed.

Description:

This update for dnsmasq fixes the following issues:

  • Update to 2.90:

  • CVE-2023-50387, CVE-2023-50868: Fixed a Denial Of Service while trying to validate specially crafted DNSSEC responses (bsc#1219823, bsc#1219826).

  • Fix reversion in --rev-server introduced in 2.88 which caused breakage if the prefix length is not exactly divisible by 8 (IPv4) or 4 (IPv6).
  • Fix possible SEGV when there server(s) for a particular domain are configured, but no server which is not qualified for a particular domain.
  • Set the default maximum DNS UDP packet sice to 1232.
  • Add --no-dhcpv4-interface and --no-dhcpv6-interface for better control over which interfaces are providing DHCP service.
  • Fix issue with stale caching
  • Add configurable caching for arbitrary RR-types.

  • Add --filter-rr option, to filter arbitrary RR-types.

  • SLP got dropped, remove config (bsc#1214884)

Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

  • SUSE Linux Micro 6.0
    zypper in -t patch SUSE-SLE-Micro-6.0-185=1

Package List:

  • SUSE Linux Micro 6.0 (aarch64 s390x x86_64)
    • dnsmasq-debugsource-2.90-1.1
    • dnsmasq-debuginfo-2.90-1.1
    • dnsmasq-2.90-1.1

References: