Security update for openssh SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2025:0659-1 Final 1 1 2025-02-23T12:03:53Z current 2025-02-23T12:03:53Z 2025-02-23T12:03:53Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for openssh This update for openssh fixes the following issues: - CVE-2025-26465: Fixed a MitM attack against OpenSSH's VerifyHostKeyDNS-enabled client (bsc#1237040). - Add a s390 specific ioctl for ECC hardware support (bsc#1225637): - for migration to openssh 8.4: write active/enabled switch over files only if not yet present (bsc#1220110) The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). Image SLES12-SP5-EC2-BYOS-2025-659,Image SLES12-SP5-EC2-On-Demand-2025-659,Image SLES12-SP5-EC2-SAP-BYOS-2025-659,Image SLES12-SP5-EC2-SAP-On-Demand-2025-659,Image SLES12-SP5-SAP-Azure-LI-BYOS-Production-2025-659,Image SLES12-SP5-SAP-Azure-VLI-BYOS-Production-2025-659,SUSE-2025-659,SUSE-SLE-SERVER-12-SP5-LTSS-2025-659,SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2025-659 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-20250659-1/ Link for SUSE-SU-2025:0659-1 https://lists.suse.com/pipermail/sle-security-updates/2025-February/020414.html E-Mail link for SUSE-SU-2025:0659-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1220110 SUSE Bug 1220110 https://bugzilla.suse.com/1225637 SUSE Bug 1225637 https://bugzilla.suse.com/1237040 SUSE Bug 1237040 https://www.suse.com/security/cve/CVE-2025-26465/ SUSE CVE CVE-2025-26465 page Image SLES12-SP5-EC2-BYOS Image SLES12-SP5-EC2-On-Demand Image SLES12-SP5-EC2-SAP-BYOS Image SLES12-SP5-EC2-SAP-On-Demand Image SLES12-SP5-SAP-Azure-LI-BYOS-Production Image SLES12-SP5-SAP-Azure-VLI-BYOS-Production SUSE Linux Enterprise Server 12 SP5-LTSS SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 openssh-7.2p2-81.26.1 openssh-askpass-gnome-7.2p2-81.26.1 openssh-cavs-7.2p2-81.26.1 openssh-fips-7.2p2-81.26.1 openssh-helpers-7.2p2-81.26.1 openssh-testuser-0-81.26.1 openssh-7.2p2-81.26.1 as a component of Image SLES12-SP5-EC2-BYOS openssh-7.2p2-81.26.1 as a component of Image SLES12-SP5-EC2-On-Demand openssh-7.2p2-81.26.1 as a component of Image SLES12-SP5-EC2-SAP-BYOS openssh-7.2p2-81.26.1 as a component of Image SLES12-SP5-EC2-SAP-On-Demand openssh-7.2p2-81.26.1 as a component of Image SLES12-SP5-SAP-Azure-LI-BYOS-Production openssh-7.2p2-81.26.1 as a component of Image SLES12-SP5-SAP-Azure-VLI-BYOS-Production openssh-7.2p2-81.26.1 as a component of SUSE Linux Enterprise Server 12 SP5-LTSS openssh-askpass-gnome-7.2p2-81.26.1 as a component of SUSE Linux Enterprise Server 12 SP5-LTSS openssh-fips-7.2p2-81.26.1 as a component of SUSE Linux Enterprise Server 12 SP5-LTSS openssh-helpers-7.2p2-81.26.1 as a component of SUSE Linux Enterprise Server 12 SP5-LTSS openssh-7.2p2-81.26.1 as a component of SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 openssh-askpass-gnome-7.2p2-81.26.1 as a component of SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 openssh-fips-7.2p2-81.26.1 as a component of SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 openssh-helpers-7.2p2-81.26.1 as a component of SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. A machine-in-the-middle attack can be performed by a malicious machine impersonating a legit server. This issue occurs due to how OpenSSH mishandles error codes in specific conditions when verifying the host key. For an attack to be considered successful, the attacker needs to manage to exhaust the client's memory resource first, turning the attack complexity high. CVE-2025-26465 Image SLES12-SP5-EC2-BYOS:openssh-7.2p2-81.26.1 Image SLES12-SP5-EC2-On-Demand:openssh-7.2p2-81.26.1 Image SLES12-SP5-EC2-SAP-BYOS:openssh-7.2p2-81.26.1 Image SLES12-SP5-EC2-SAP-On-Demand:openssh-7.2p2-81.26.1 Image SLES12-SP5-SAP-Azure-LI-BYOS-Production:openssh-7.2p2-81.26.1 Image SLES12-SP5-SAP-Azure-VLI-BYOS-Production:openssh-7.2p2-81.26.1 SUSE Linux Enterprise Server 12 SP5-LTSS:openssh-7.2p2-81.26.1 SUSE Linux Enterprise Server 12 SP5-LTSS:openssh-askpass-gnome-7.2p2-81.26.1 SUSE Linux Enterprise Server 12 SP5-LTSS:openssh-fips-7.2p2-81.26.1 SUSE Linux Enterprise Server 12 SP5-LTSS:openssh-helpers-7.2p2-81.26.1 SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:openssh-7.2p2-81.26.1 SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:openssh-askpass-gnome-7.2p2-81.26.1 SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:openssh-fips-7.2p2-81.26.1 SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:openssh-helpers-7.2p2-81.26.1 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-20250659-1/ https://www.suse.com/security/cve/CVE-2025-26465.html CVE-2025-26465 https://bugzilla.suse.com/1237040 SUSE Bug 1237040 https://bugzilla.suse.com/1237041 SUSE Bug 1237041