# 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

SUSE: 2025:0071-1 important: dnsmasq Security Advisory Updates

January 10, 2025
* bsc#1200344 * bsc#1207174 * bsc#1209358 * bsc#1214884 * bsc#1219823

Summary

## 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-20...

Read the Full Advisory

References

* bsc#1200344

* bsc#1207174

* bsc#1209358

* bsc#1214884

* bsc#1219823

* bsc#1219826

Cross-

* 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 ESP...

Read the Full Advisory

Severity
Announcement ID: SUSE-SU-2025:0071-1
Release Date: 2025-01-10T16:54:52Z
Rating: important

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