Security update for libssh SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2025:02755-1 Final 1 1 2025-08-12T07:35:23Z current 2025-08-12T07:35:23Z 2025-08-12T07:35:23Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for libssh 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). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2025-2755,SUSE-SLE-SERVER-12-SP5-LTSS-2025-2755,SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2025-2755 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2025/suse-su-202502755-1/ Link for SUSE-SU-2025:02755-1 https://lists.suse.com/pipermail/sle-updates/2025-August/041165.html E-Mail link for SUSE-SU-2025:02755-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1245309 SUSE Bug 1245309 https://bugzilla.suse.com/1245310 SUSE Bug 1245310 https://bugzilla.suse.com/1245311 SUSE Bug 1245311 https://www.suse.com/security/cve/CVE-2025-4877/ SUSE CVE CVE-2025-4877 page https://www.suse.com/security/cve/CVE-2025-4878/ SUSE CVE CVE-2025-4878 page https://www.suse.com/security/cve/CVE-2025-5318/ SUSE CVE CVE-2025-5318 page SUSE Linux Enterprise Server 12 SP5-LTSS SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 libssh-devel-0.6.3-12.15.1 libssh-devel-doc-0.6.3-12.15.1 libssh4-0.6.3-12.15.1 libssh4-32bit-0.6.3-12.15.1 libssh4-64bit-0.6.3-12.15.1 libssh-devel-doc-0.6.3-12.15.1 as a component of SUSE Linux Enterprise Server 12 SP5-LTSS libssh-devel-doc-0.6.3-12.15.1 as a component of SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 unknown CVE-2025-4877 SUSE Linux Enterprise Server 12 SP5-LTSS:libssh-devel-doc-0.6.3-12.15.1 SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:libssh-devel-doc-0.6.3-12.15.1 moderate To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2025/suse-su-202502755-1/ https://www.suse.com/security/cve/CVE-2025-4877.html CVE-2025-4877 https://bugzilla.suse.com/1245309 SUSE Bug 1245309 A vulnerability was found in libssh, where an uninitialized variable exists under certain conditions in the privatekey_from_file() function. This flaw can be triggered if the file specified by the filename doesn't exist and may lead to possible signing failures or heap corruption. CVE-2025-4878 SUSE Linux Enterprise Server 12 SP5-LTSS:libssh-devel-doc-0.6.3-12.15.1 SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:libssh-devel-doc-0.6.3-12.15.1 moderate To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2025/suse-su-202502755-1/ https://www.suse.com/security/cve/CVE-2025-4878.html CVE-2025-4878 https://bugzilla.suse.com/1245310 SUSE Bug 1245310 A flaw was found in the libssh library. An out-of-bounds read can be triggered in the sftp_handle function due to an incorrect comparison check that permits the function to access memory beyond the valid handle list and to return an invalid pointer, which is used in further processing. This vulnerability allows an authenticated remote attacker to potentially read unintended memory regions, exposing sensitive information or affect service behavior. CVE-2025-5318 SUSE Linux Enterprise Server 12 SP5-LTSS:libssh-devel-doc-0.6.3-12.15.1 SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:libssh-devel-doc-0.6.3-12.15.1 moderate To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2025/suse-su-202502755-1/ https://www.suse.com/security/cve/CVE-2025-5318.html CVE-2025-5318 https://bugzilla.suse.com/1245311 SUSE Bug 1245311