Security update for libssh

Announcement ID:	SUSE-SU-2025:02278-1
Release Date:	2025-07-10T16:02:59Z
Rating:	important
References:	bsc#1245309 bsc#1245310 bsc#1245311 bsc#1245314
Cross-References:	CVE-2025-4877 CVE-2025-4878 CVE-2025-5318 CVE-2025-5372
CVSS scores:	CVE-2025-4877 ( SUSE ): 2.0 CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N CVE-2025-4877 ( SUSE ): 4.5 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L CVE-2025-4878 ( SUSE ): 2.0 CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N CVE-2025-4878 ( SUSE ): 3.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N CVE-2025-5318 ( SUSE ): 5.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N CVE-2025-5318 ( SUSE ): 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N CVE-2025-5318 ( NVD ): 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N CVE-2025-5372 ( SUSE ): 7.6 CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N CVE-2025-5372 ( SUSE ): 7.1 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L CVE-2025-5372 ( NVD ): 5.0 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Affected Products:	openSUSE Leap 15.4 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 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 for SAP Applications 15 SP4 SUSE Linux Enterprise Server for SAP Applications 15 SP5 SUSE Manager Proxy 4.3 SUSE Manager Retail Branch Server 4.3 SUSE Manager Server 4.3

An update that solves four vulnerabilities can now be installed.

Description:

This update for libssh fixes the following issues:

• CVE-2025-4877: Fixed write beyond bounds in binary to base64 conversion functions (bsc#1245309).
• CVE-2025-4878: Fixed use of uninitialized variable in privatekey_from_file() (bsc#1245310).
• CVE-2025-5318: Fixed likely read beyond bounds in sftp server handle management (bsc#1245311).
• CVE-2025-5372: Fixed ssh_kdf() returns a success code on certain failures (bsc#1245314).

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:

• openSUSE Leap 15.4
  zypper in -t patch SUSE-2025-2278=1
• SUSE Linux Enterprise Micro for Rancher 5.3
  zypper in -t patch SUSE-SLE-Micro-5.3-2025-2278=1
• SUSE Linux Enterprise Micro 5.3
  zypper in -t patch SUSE-SLE-Micro-5.3-2025-2278=1
• SUSE Linux Enterprise Micro for Rancher 5.4
  zypper in -t patch SUSE-SLE-Micro-5.4-2025-2278=1
• SUSE Linux Enterprise Micro 5.4
  zypper in -t patch SUSE-SLE-Micro-5.4-2025-2278=1
• SUSE Linux Enterprise Micro 5.5
  zypper in -t patch SUSE-SLE-Micro-5.5-2025-2278=1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2025-2278=1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2025-2278=1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2025-2278=1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP5
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2025-2278=1
• SUSE Linux Enterprise Server 15 SP4 LTSS
  zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2025-2278=1
• SUSE Linux Enterprise Server 15 SP5 LTSS
  zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2025-2278=1
• SUSE Linux Enterprise Server for SAP Applications 15 SP4
  zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2025-2278=1
• SUSE Linux Enterprise Server for SAP Applications 15 SP5
  zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2025-2278=1
• SUSE Manager Proxy 4.3
  zypper in -t patch SUSE-SLE-Product-SUSE-Manager-Proxy-4.3-2025-2278=1
• SUSE Manager Retail Branch Server 4.3
  zypper in -t patch SUSE-SLE-Product-SUSE-Manager-Retail-Branch-Server-4.3-2025-2278=1
• SUSE Manager Server 4.3
  zypper in -t patch SUSE-SLE-Product-SUSE-Manager-Server-4.3-2025-2278=1

Package List:

• openSUSE Leap 15.4 (aarch64 ppc64le s390x x86_64 i586)
  • libssh4-debuginfo-0.9.8-150400.3.9.1
  • libssh4-0.9.8-150400.3.9.1
  • libssh-devel-0.9.8-150400.3.9.1
  • libssh-config-0.9.8-150400.3.9.1
  • libssh-debugsource-0.9.8-150400.3.9.1
• openSUSE Leap 15.4 (x86_64)
  • libssh4-32bit-debuginfo-0.9.8-150400.3.9.1
  • libssh4-32bit-0.9.8-150400.3.9.1
• openSUSE Leap 15.4 (aarch64_ilp32)
  • libssh4-64bit-0.9.8-150400.3.9.1
  • libssh4-64bit-debuginfo-0.9.8-150400.3.9.1
• SUSE Linux Enterprise Micro for Rancher 5.3 (aarch64 s390x x86_64)
  • libssh-debugsource-0.9.8-150400.3.9.1
  • libssh4-debuginfo-0.9.8-150400.3.9.1
  • libssh4-0.9.8-150400.3.9.1
  • libssh-config-0.9.8-150400.3.9.1
• SUSE Linux Enterprise Micro 5.3 (aarch64 s390x x86_64)
  • libssh-debugsource-0.9.8-150400.3.9.1
  • libssh4-debuginfo-0.9.8-150400.3.9.1
  • libssh4-0.9.8-150400.3.9.1
  • libssh-config-0.9.8-150400.3.9.1
• SUSE Linux Enterprise Micro for Rancher 5.4 (aarch64 s390x x86_64)
  • libssh-debugsource-0.9.8-150400.3.9.1
  • libssh4-debuginfo-0.9.8-150400.3.9.1
  • libssh4-0.9.8-150400.3.9.1
  • libssh-config-0.9.8-150400.3.9.1
• SUSE Linux Enterprise Micro 5.4 (aarch64 s390x x86_64)
  • libssh-debugsource-0.9.8-150400.3.9.1
  • libssh4-debuginfo-0.9.8-150400.3.9.1
  • libssh4-0.9.8-150400.3.9.1
  • libssh-config-0.9.8-150400.3.9.1
• SUSE Linux Enterprise Micro 5.5 (aarch64 ppc64le s390x x86_64)
  • libssh-debugsource-0.9.8-150400.3.9.1
  • libssh4-debuginfo-0.9.8-150400.3.9.1
  • libssh4-0.9.8-150400.3.9.1
  • libssh-config-0.9.8-150400.3.9.1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (aarch64 x86_64)
  • libssh4-debuginfo-0.9.8-150400.3.9.1
  • libssh4-0.9.8-150400.3.9.1
  • libssh-devel-0.9.8-150400.3.9.1
  • libssh-config-0.9.8-150400.3.9.1
  • libssh-debugsource-0.9.8-150400.3.9.1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (x86_64)
  • libssh4-32bit-debuginfo-0.9.8-150400.3.9.1
  • libssh4-32bit-0.9.8-150400.3.9.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64 x86_64)
  • libssh4-debuginfo-0.9.8-150400.3.9.1
  • libssh4-0.9.8-150400.3.9.1
  • libssh-devel-0.9.8-150400.3.9.1
  • libssh-config-0.9.8-150400.3.9.1
  • libssh-debugsource-0.9.8-150400.3.9.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (x86_64)
  • libssh4-32bit-debuginfo-0.9.8-150400.3.9.1
  • libssh4-32bit-0.9.8-150400.3.9.1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64 x86_64)
  • libssh4-debuginfo-0.9.8-150400.3.9.1
  • libssh4-0.9.8-150400.3.9.1
  • libssh-devel-0.9.8-150400.3.9.1
  • libssh-config-0.9.8-150400.3.9.1
  • libssh-debugsource-0.9.8-150400.3.9.1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (x86_64)
  • libssh4-32bit-debuginfo-0.9.8-150400.3.9.1
  • libssh4-32bit-0.9.8-150400.3.9.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64 x86_64)
  • libssh4-debuginfo-0.9.8-150400.3.9.1
  • libssh4-0.9.8-150400.3.9.1
  • libssh-devel-0.9.8-150400.3.9.1
  • libssh-config-0.9.8-150400.3.9.1
  • libssh-debugsource-0.9.8-150400.3.9.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (x86_64)
  • libssh4-32bit-debuginfo-0.9.8-150400.3.9.1
  • libssh4-32bit-0.9.8-150400.3.9.1
• SUSE Linux Enterprise Server 15 SP4 LTSS (aarch64 ppc64le s390x x86_64)
  • libssh4-debuginfo-0.9.8-150400.3.9.1
  • libssh4-0.9.8-150400.3.9.1
  • libssh-devel-0.9.8-150400.3.9.1
  • libssh-config-0.9.8-150400.3.9.1
  • libssh-debugsource-0.9.8-150400.3.9.1
• SUSE Linux Enterprise Server 15 SP4 LTSS (x86_64)
  • libssh4-32bit-debuginfo-0.9.8-150400.3.9.1
  • libssh4-32bit-0.9.8-150400.3.9.1
• SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64)
  • libssh4-debuginfo-0.9.8-150400.3.9.1
  • libssh4-0.9.8-150400.3.9.1
  • libssh-devel-0.9.8-150400.3.9.1
  • libssh-config-0.9.8-150400.3.9.1
  • libssh-debugsource-0.9.8-150400.3.9.1
• SUSE Linux Enterprise Server 15 SP5 LTSS (x86_64)
  • libssh4-32bit-debuginfo-0.9.8-150400.3.9.1
  • libssh4-32bit-0.9.8-150400.3.9.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP4 (ppc64le x86_64)
  • libssh4-debuginfo-0.9.8-150400.3.9.1
  • libssh4-0.9.8-150400.3.9.1
  • libssh-devel-0.9.8-150400.3.9.1
  • libssh-config-0.9.8-150400.3.9.1
  • libssh-debugsource-0.9.8-150400.3.9.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP4 (x86_64)
  • libssh4-32bit-debuginfo-0.9.8-150400.3.9.1
  • libssh4-32bit-0.9.8-150400.3.9.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP5 (ppc64le x86_64)
  • libssh4-debuginfo-0.9.8-150400.3.9.1
  • libssh4-0.9.8-150400.3.9.1
  • libssh-devel-0.9.8-150400.3.9.1
  • libssh-config-0.9.8-150400.3.9.1
  • libssh-debugsource-0.9.8-150400.3.9.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP5 (x86_64)
  • libssh4-32bit-debuginfo-0.9.8-150400.3.9.1
  • libssh4-32bit-0.9.8-150400.3.9.1
• SUSE Manager Proxy 4.3 (x86_64)
  • libssh4-32bit-debuginfo-0.9.8-150400.3.9.1
  • libssh4-debuginfo-0.9.8-150400.3.9.1
  • libssh4-0.9.8-150400.3.9.1
  • libssh-devel-0.9.8-150400.3.9.1
  • libssh4-32bit-0.9.8-150400.3.9.1
  • libssh-config-0.9.8-150400.3.9.1
  • libssh-debugsource-0.9.8-150400.3.9.1
• SUSE Manager Retail Branch Server 4.3 (x86_64)
  • libssh4-32bit-debuginfo-0.9.8-150400.3.9.1
  • libssh4-debuginfo-0.9.8-150400.3.9.1
  • libssh4-0.9.8-150400.3.9.1
  • libssh-devel-0.9.8-150400.3.9.1
  • libssh4-32bit-0.9.8-150400.3.9.1
  • libssh-config-0.9.8-150400.3.9.1
  • libssh-debugsource-0.9.8-150400.3.9.1
• SUSE Manager Server 4.3 (ppc64le s390x x86_64)
  • libssh4-debuginfo-0.9.8-150400.3.9.1
  • libssh4-0.9.8-150400.3.9.1
  • libssh-devel-0.9.8-150400.3.9.1
  • libssh-config-0.9.8-150400.3.9.1
  • libssh-debugsource-0.9.8-150400.3.9.1
• SUSE Manager Server 4.3 (x86_64)
  • libssh4-32bit-debuginfo-0.9.8-150400.3.9.1
  • libssh4-32bit-0.9.8-150400.3.9.1

References:

• https://www.suse.com/security/cve/CVE-2025-4877.html
• https://www.suse.com/security/cve/CVE-2025-4878.html
• https://www.suse.com/security/cve/CVE-2025-5318.html
• https://www.suse.com/security/cve/CVE-2025-5372.html
• https://bugzilla.suse.com/show_bug.cgi?id=1245309
• https://bugzilla.suse.com/show_bug.cgi?id=1245310
• https://bugzilla.suse.com/show_bug.cgi?id=1245311
• https://bugzilla.suse.com/show_bug.cgi?id=1245314