Security update for dnsmasq

Announcement ID:	SUSE-SU-2025:0071-1
Release Date:	2025-01-10T16:54:52Z
Rating:	important
References:	bsc#1200344 bsc#1207174 bsc#1209358 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-2023-50387 ( 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-2023-50868 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products:	Basesystem Module 15-SP6 openSUSE Leap 15.4 openSUSE Leap 15.6 openSUSE Leap Micro 5.5 SUSE Linux Enterprise Desktop 15 SP4 LTSS SUSE Linux Enterprise Desktop 15 SP6 SUSE Linux Enterprise High Performance Computing 15 SP4 SUSE Linux Enterprise High Performance Computing 15 SP5 SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 SUSE Linux Enterprise Micro 5.3 SUSE Linux Enterprise Micro 5.4 SUSE Linux Enterprise Micro 5.5 SUSE Linux Enterprise Micro for Rancher 5.3 SUSE Linux Enterprise Micro for Rancher 5.4 SUSE Linux Enterprise Real Time 15 SP6 SUSE Linux Enterprise Server 15 SP4 SUSE Linux Enterprise Server 15 SP4 LTSS SUSE Linux Enterprise Server 15 SP5 SUSE Linux Enterprise Server 15 SP5 LTSS SUSE Linux Enterprise Server 15 SP6 SUSE Linux Enterprise Server for SAP Applications 15 SP4 SUSE Linux Enterprise Server for SAP Applications 15 SP5 SUSE Linux Enterprise Server for SAP Applications 15 SP6 SUSE Manager Proxy 4.3 SUSE Manager Retail Branch Server 4.3 SUSE Manager Server 4.3

An update that solves three vulnerabilities and has three security fixes can now be installed.

Description:

This update for dnsmasq fixes the following issues:

• Version update to 2.90:
• CVE-2023-50387: Fixed a Denial Of Service while trying to validate specially crafted DNSSEC responses. (bsc#1219823)
• CVE-2023-50868: Fixed a Denial Of Service while trying to validate specially crafted DNSSEC responses. (bsc#1219826)
• CVE-2023-28450: Default maximum EDNS.0 UDP packet size should be 1232. (bsc#1209358)

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:

• Basesystem Module 15-SP6
  zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP6-2025-71=1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2025-71=1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2025-71=1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2025-71=1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP5
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2025-71=1
• SUSE Linux Enterprise Desktop 15 SP4 LTSS
  zypper in -t patch SUSE-SLE-Product-SLED-15-SP4-LTSS-2025-71=1
• SUSE Linux Enterprise Server 15 SP4 LTSS
  zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2025-71=1
• SUSE Linux Enterprise Server 15 SP5 LTSS
  zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2025-71=1
• SUSE Linux Enterprise Server for SAP Applications 15 SP4
  zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2025-71=1
• SUSE Linux Enterprise Server for SAP Applications 15 SP5
  zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2025-71=1
• SUSE Manager Proxy 4.3
  zypper in -t patch SUSE-SLE-Product-SUSE-Manager-Proxy-4.3-2025-71=1
• SUSE Manager Retail Branch Server 4.3
  zypper in -t patch SUSE-SLE-Product-SUSE-Manager-Retail-Branch-Server-4.3-2025-71=1
• SUSE Manager Server 4.3
  zypper in -t patch SUSE-SLE-Product-SUSE-Manager-Server-4.3-2025-71=1
• openSUSE Leap 15.4
  zypper in -t patch SUSE-2025-71=1
• openSUSE Leap Micro 5.5
  zypper in -t patch openSUSE-Leap-Micro-5.5-2025-71=1
• openSUSE Leap 15.6
  zypper in -t patch openSUSE-SLE-15.6-2025-71=1
• SUSE Linux Enterprise Micro for Rancher 5.3
  zypper in -t patch SUSE-SLE-Micro-5.3-2025-71=1
• SUSE Linux Enterprise Micro 5.3
  zypper in -t patch SUSE-SLE-Micro-5.3-2025-71=1
• SUSE Linux Enterprise Micro for Rancher 5.4
  zypper in -t patch SUSE-SLE-Micro-5.4-2025-71=1
• SUSE Linux Enterprise Micro 5.4
  zypper in -t patch SUSE-SLE-Micro-5.4-2025-71=1
• SUSE Linux Enterprise Micro 5.5
  zypper in -t patch SUSE-SLE-Micro-5.5-2025-71=1

Package List:

• Basesystem Module 15-SP6 (aarch64 ppc64le s390x x86_64)
  • dnsmasq-debuginfo-2.90-150400.16.3.1
  • dnsmasq-debugsource-2.90-150400.16.3.1
  • dnsmasq-2.90-150400.16.3.1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (aarch64 x86_64)
  • dnsmasq-debuginfo-2.90-150400.16.3.1
  • dnsmasq-debugsource-2.90-150400.16.3.1
  • dnsmasq-2.90-150400.16.3.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64 x86_64)
  • dnsmasq-debuginfo-2.90-150400.16.3.1
  • dnsmasq-debugsource-2.90-150400.16.3.1
  • dnsmasq-2.90-150400.16.3.1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64 x86_64)
  • dnsmasq-debuginfo-2.90-150400.16.3.1
  • dnsmasq-debugsource-2.90-150400.16.3.1
  • dnsmasq-2.90-150400.16.3.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64 x86_64)
  • dnsmasq-debuginfo-2.90-150400.16.3.1
  • dnsmasq-debugsource-2.90-150400.16.3.1
  • dnsmasq-2.90-150400.16.3.1
• SUSE Linux Enterprise Desktop 15 SP4 LTSS (x86_64)
  • dnsmasq-debuginfo-2.90-150400.16.3.1
  • dnsmasq-debugsource-2.90-150400.16.3.1
  • dnsmasq-2.90-150400.16.3.1
• SUSE Linux Enterprise Server 15 SP4 LTSS (aarch64 ppc64le s390x x86_64)
  • dnsmasq-debuginfo-2.90-150400.16.3.1
  • dnsmasq-debugsource-2.90-150400.16.3.1
  • dnsmasq-2.90-150400.16.3.1
• SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64)
  • dnsmasq-debuginfo-2.90-150400.16.3.1
  • dnsmasq-debugsource-2.90-150400.16.3.1
  • dnsmasq-2.90-150400.16.3.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP4 (ppc64le x86_64)
  • dnsmasq-debuginfo-2.90-150400.16.3.1
  • dnsmasq-debugsource-2.90-150400.16.3.1
  • dnsmasq-2.90-150400.16.3.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP5 (ppc64le x86_64)
  • dnsmasq-debuginfo-2.90-150400.16.3.1
  • dnsmasq-debugsource-2.90-150400.16.3.1
  • dnsmasq-2.90-150400.16.3.1
• SUSE Manager Proxy 4.3 (x86_64)
  • dnsmasq-debuginfo-2.90-150400.16.3.1
  • dnsmasq-debugsource-2.90-150400.16.3.1
  • dnsmasq-2.90-150400.16.3.1
• SUSE Manager Retail Branch Server 4.3 (x86_64)
  • dnsmasq-debuginfo-2.90-150400.16.3.1
  • dnsmasq-debugsource-2.90-150400.16.3.1
  • dnsmasq-2.90-150400.16.3.1
• SUSE Manager Server 4.3 (ppc64le s390x x86_64)
  • dnsmasq-debuginfo-2.90-150400.16.3.1
  • dnsmasq-debugsource-2.90-150400.16.3.1
  • dnsmasq-2.90-150400.16.3.1
• openSUSE Leap 15.4 (aarch64 ppc64le s390x x86_64 i586)
  • dnsmasq-utils-debuginfo-2.90-150400.16.3.1
  • dnsmasq-2.90-150400.16.3.1
  • dnsmasq-debuginfo-2.90-150400.16.3.1
  • dnsmasq-utils-2.90-150400.16.3.1
  • dnsmasq-debugsource-2.90-150400.16.3.1
• openSUSE Leap Micro 5.5 (aarch64 s390x x86_64)
  • dnsmasq-debuginfo-2.90-150400.16.3.1
  • dnsmasq-debugsource-2.90-150400.16.3.1
  • dnsmasq-2.90-150400.16.3.1
• openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64)
  • dnsmasq-utils-debuginfo-2.90-150400.16.3.1
  • dnsmasq-2.90-150400.16.3.1
  • dnsmasq-debuginfo-2.90-150400.16.3.1
  • dnsmasq-utils-2.90-150400.16.3.1
  • dnsmasq-debugsource-2.90-150400.16.3.1
• SUSE Linux Enterprise Micro for Rancher 5.3 (aarch64 s390x x86_64)
  • dnsmasq-debuginfo-2.90-150400.16.3.1
  • dnsmasq-debugsource-2.90-150400.16.3.1
  • dnsmasq-2.90-150400.16.3.1
• SUSE Linux Enterprise Micro 5.3 (aarch64 s390x x86_64)
  • dnsmasq-debuginfo-2.90-150400.16.3.1
  • dnsmasq-debugsource-2.90-150400.16.3.1
  • dnsmasq-2.90-150400.16.3.1
• SUSE Linux Enterprise Micro for Rancher 5.4 (aarch64 s390x x86_64)
  • dnsmasq-debuginfo-2.90-150400.16.3.1
  • dnsmasq-debugsource-2.90-150400.16.3.1
  • dnsmasq-2.90-150400.16.3.1
• SUSE Linux Enterprise Micro 5.4 (aarch64 s390x x86_64)
  • dnsmasq-debuginfo-2.90-150400.16.3.1
  • dnsmasq-debugsource-2.90-150400.16.3.1
  • dnsmasq-2.90-150400.16.3.1
• SUSE Linux Enterprise Micro 5.5 (aarch64 ppc64le s390x x86_64)
  • dnsmasq-debuginfo-2.90-150400.16.3.1
  • dnsmasq-debugsource-2.90-150400.16.3.1
  • dnsmasq-2.90-150400.16.3.1

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=1200344
• https://bugzilla.suse.com/show_bug.cgi?id=1207174
• https://bugzilla.suse.com/show_bug.cgi?id=1209358
• 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