SUSE-SU-2025:20118-1: important: Security update for dnsmasq

[SLE-UPDATES]

# Security update for dnsmasq

Announcement ID: SUSE-SU-2025:20118-1  
Release Date: 2025-02-03T09:22:41Z  
Rating: important  
References:

  * bsc#1214884
  * bsc#1219823
  * bsc#1219826

  
Cross-References:

  * CVE-2023-28450
  * CVE-2023-50387
  * CVE-2023-50868

  
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-2.90-1.1
    * dnsmasq-debuginfo-2.90-1.1
    * dnsmasq-debugsource-2.90-1.1

## References:

  * https://www.suse.com/security/cve/CVE-2023-28450.html
  * https://www.suse.com/security/cve/CVE-2023-50387.html
  * https://www.suse.com/security/cve/CVE-2023-50868.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1214884
  * https://bugzilla.suse.com/show_bug.cgi?id=1219823
  * https://bugzilla.suse.com/show_bug.cgi?id=1219826

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