Security update for dnsdist

Announcement ID:	SUSE-SU-2025:01745-1
Release Date:	2025-05-29T12:22:10Z
Rating:	important
References:	bsc#1243378
Cross-References:	CVE-2025-30193
CVSS scores:	CVE-2025-30193 ( SUSE ): 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVE-2025-30193 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2025-30193 ( NVD ): 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 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 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 one vulnerability can now be installed.

Description:

This update for dnsdist fixes the following issues:

• CVE-2025-30193: stack exhaustion when processing too many queries on incoming TCP connections leads to a denial-of-service (bsc#1243378).

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 Manager Proxy 4.3
  zypper in -t patch SUSE-SLE-Product-SUSE-Manager-Proxy-4.3-2025-1745=1
• SUSE Manager Retail Branch Server 4.3
  zypper in -t patch SUSE-SLE-Product-SUSE-Manager-Retail-Branch-Server-4.3-2025-1745=1
• SUSE Manager Server 4.3
  zypper in -t patch SUSE-SLE-Product-SUSE-Manager-Server-4.3-2025-1745=1
• openSUSE Leap 15.4
  zypper in -t patch SUSE-2025-1745=1
• openSUSE Leap 15.6
  zypper in -t patch openSUSE-SLE-15.6-2025-1745=1
• Basesystem Module 15-SP6
  zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP6-2025-1745=1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2025-1745=1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2025-1745=1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2025-1745=1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP5
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2025-1745=1
• SUSE Linux Enterprise Server 15 SP4 LTSS
  zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2025-1745=1
• SUSE Linux Enterprise Server 15 SP5 LTSS
  zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2025-1745=1
• SUSE Linux Enterprise Server for SAP Applications 15 SP4
  zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2025-1745=1
• SUSE Linux Enterprise Server for SAP Applications 15 SP5
  zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2025-1745=1

Package List:

• SUSE Manager Proxy 4.3 (x86_64)
  • dnsdist-debuginfo-1.8.0-150400.9.6.1
  • dnsdist-1.8.0-150400.9.6.1
  • dnsdist-debugsource-1.8.0-150400.9.6.1
• SUSE Manager Retail Branch Server 4.3 (x86_64)
  • dnsdist-debuginfo-1.8.0-150400.9.6.1
  • dnsdist-1.8.0-150400.9.6.1
  • dnsdist-debugsource-1.8.0-150400.9.6.1
• SUSE Manager Server 4.3 (x86_64)
  • dnsdist-debuginfo-1.8.0-150400.9.6.1
  • dnsdist-1.8.0-150400.9.6.1
  • dnsdist-debugsource-1.8.0-150400.9.6.1
• openSUSE Leap 15.4 (aarch64 ppc64le s390x x86_64 i586)
  • dnsdist-debuginfo-1.8.0-150400.9.6.1
  • dnsdist-1.8.0-150400.9.6.1
  • dnsdist-debugsource-1.8.0-150400.9.6.1
• openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64)
  • dnsdist-debuginfo-1.8.0-150400.9.6.1
  • dnsdist-1.8.0-150400.9.6.1
  • dnsdist-debugsource-1.8.0-150400.9.6.1
• Basesystem Module 15-SP6 (aarch64 ppc64le s390x x86_64)
  • dnsdist-debuginfo-1.8.0-150400.9.6.1
  • dnsdist-1.8.0-150400.9.6.1
  • dnsdist-debugsource-1.8.0-150400.9.6.1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (aarch64 x86_64)
  • dnsdist-debuginfo-1.8.0-150400.9.6.1
  • dnsdist-1.8.0-150400.9.6.1
  • dnsdist-debugsource-1.8.0-150400.9.6.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64 x86_64)
  • dnsdist-debuginfo-1.8.0-150400.9.6.1
  • dnsdist-1.8.0-150400.9.6.1
  • dnsdist-debugsource-1.8.0-150400.9.6.1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64 x86_64)
  • dnsdist-debuginfo-1.8.0-150400.9.6.1
  • dnsdist-1.8.0-150400.9.6.1
  • dnsdist-debugsource-1.8.0-150400.9.6.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64 x86_64)
  • dnsdist-debuginfo-1.8.0-150400.9.6.1
  • dnsdist-1.8.0-150400.9.6.1
  • dnsdist-debugsource-1.8.0-150400.9.6.1
• SUSE Linux Enterprise Server 15 SP4 LTSS (aarch64 x86_64)
  • dnsdist-debuginfo-1.8.0-150400.9.6.1
  • dnsdist-1.8.0-150400.9.6.1
  • dnsdist-debugsource-1.8.0-150400.9.6.1
• SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64)
  • dnsdist-debuginfo-1.8.0-150400.9.6.1
  • dnsdist-1.8.0-150400.9.6.1
  • dnsdist-debugsource-1.8.0-150400.9.6.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP4 (x86_64)
  • dnsdist-debuginfo-1.8.0-150400.9.6.1
  • dnsdist-1.8.0-150400.9.6.1
  • dnsdist-debugsource-1.8.0-150400.9.6.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP5 (ppc64le x86_64)
  • dnsdist-debuginfo-1.8.0-150400.9.6.1
  • dnsdist-1.8.0-150400.9.6.1
  • dnsdist-debugsource-1.8.0-150400.9.6.1

References:

• https://www.suse.com/security/cve/CVE-2025-30193.html
• https://bugzilla.suse.com/show_bug.cgi?id=1243378