Upstream information

CVE-2025-8277 at MITRE

Description

A flaw was found in libssh's handling of key exchange (KEX) processes when a client repeatedly sends incorrect KEX guesses. The library fails to free memory during these rekey operations, which can gradually exhaust system memory. This issue can lead to crashes on the client side, particularly when using libgcrypt, which impacts application stability and availability.

SUSE information

Overall state of this security issue: Pending

This issue is currently rated as having low severity.

CVSS v3 Scores
  CNA (Red Hat) SUSE
Base Score 3.1 3.1
Vector CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
Attack Vector Network Network
Attack Complexity High High
Privileges Required Low Low
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact None None
Integrity Impact None None
Availability Impact Low Low
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1249375 [NEW]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
Container bci/gcc:latest
Container bci/golang:oldstable-2.71.12
Container bci/golang:oldstable-openssl-74.9
Container bci/golang:stable-1.71.12
Container bci/kiwi:latest
Container bci/nodejs:20.19.2-55.32
Container bci/nodejs:22.15.1-10.29
Container bci/openjdk:17.0.16.0-8.29
Container bci/openjdk:21.0.8.0-11.29
Container bci/php-apache:8.3.23-12.30
Container bci/php:latest
Container bci/python:3
Container bci/python:latest
Container bci/ruby:2
Container bci/ruby:latest
Container bci/rust:latest
Container private-registry/harbor-trivy-adapter:0.33.2-2.43
Container suse/git:2.51.0-61.10
Container suse/hpc/warewulf4-x86_64/sle-hpc-node:15.6.17.8.111
Container suse/kiosk/firefox-esr:140.3-64.37
Container suse/sle15:15.6.47.23.32
Container suse/sle15:15.7-5.8.33
Image SLES15-SP7-Hardened-BYOS-Azure
  • libssh-config >= 0.9.8-150600.11.6.1
  • libssh4 >= 0.9.8-150600.11.6.1
Container bci/spack:0.23.1-11.59
  • libssh-config >= 0.9.8-150600.11.6.1
  • libssh-devel >= 0.9.8-150600.11.6.1
  • libssh4 >= 0.9.8-150600.11.6.1
Container bci/spack:0.23.1-15.27
  • libssh-devel >= 0.9.8-150600.11.6.1
Container suse/ltss/sle12.5/sles12sp5:8.5.137
  • libssh-config >= 0.9.8-3.18.1
  • libssh4 >= 0.9.8-3.18.1
SUSE Linux Enterprise Desktop 15 SP6
SUSE Linux Enterprise High Performance Computing 15 SP6
SUSE Linux Enterprise Module for Basesystem 15 SP6
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server for SAP Applications 15 SP6
  • libssh-config >= 0.9.8-150600.11.6.1
  • libssh-devel >= 0.9.8-150600.11.6.1
  • libssh4 >= 0.9.8-150600.11.6.1
  • libssh4-32bit >= 0.9.8-150600.11.6.1
 Patchnames:
SUSE-SLE-Module-Basesystem-15-SP6-2025-3369
SUSE Linux Enterprise Desktop 15 SP7
SUSE Linux Enterprise High Performance Computing 15 SP7
SUSE Linux Enterprise Module for Basesystem 15 SP7
SUSE Linux Enterprise Server 15 SP7
SUSE Linux Enterprise Server for SAP Applications 15 SP7
  • libssh-config >= 0.9.8-150600.11.6.1
  • libssh-devel >= 0.9.8-150600.11.6.1
  • libssh4 >= 0.9.8-150600.11.6.1
  • libssh4-32bit >= 0.9.8-150600.11.6.1
 Patchnames:
SUSE-SLE-Module-Basesystem-15-SP7-2025-3369
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5
  • libssh-config >= 0.9.8-3.18.1
  • libssh-devel >= 0.9.8-3.18.1
  • libssh4 >= 0.9.8-3.18.1
  • libssh4-32bit >= 0.9.8-3.18.1
 Patchnames:
SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2025-3368
openSUSE Leap 15.6
  • libssh-config >= 0.9.8-150600.11.6.1
  • libssh-devel >= 0.9.8-150600.11.6.1
  • libssh4 >= 0.9.8-150600.11.6.1
  • libssh4-32bit >= 0.9.8-150600.11.6.1
 Patchnames:
openSUSE-SLE-15.6-2025-3369
openSUSE Tumbleweed
  • libssh-config >= 0.11.3-1.1
  • libssh-devel >= 0.11.3-1.1
  • libssh4 >= 0.11.3-1.1
  • libssh4-32bit >= 0.11.3-1.1
 Patchnames:
openSUSE-Tumbleweed-2025-15545

List of packages in QA

Product(s) Package(s)
SUSE Linux Enterprise Micro 5.1
  • libssh-config >= 0.9.8-150200.13.12.1
  • libssh4 >= 0.9.8-150200.13.12.1
SUSE Linux Enterprise Micro 5.2
  • libssh-config >= 0.9.8-150200.13.12.1
  • libssh4 >= 0.9.8-150200.13.12.1
SUSE Linux Enterprise Micro 5.3
  • libssh-config >= 0.9.8-150400.3.12.1
  • libssh4 >= 0.9.8-150400.3.12.1
SUSE Linux Enterprise Micro 5.4
  • libssh-config >= 0.9.8-150400.3.12.1
  • libssh4 >= 0.9.8-150400.3.12.1
SUSE Linux Enterprise Micro 5.5
  • libssh-config >= 0.9.8-150400.3.12.1
  • libssh4 >= 0.9.8-150400.3.12.1
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5
  • libssh-devel-doc >= 0.6.3-12.18.1

First public cloud image revisions this CVE is fixed in:

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise Desktop 15 SP6 libssh Released
SUSE Linux Enterprise Desktop 15 SP7 libssh Released
SUSE Linux Enterprise High Performance Computing 15 SP6 libssh Released
SUSE Linux Enterprise High Performance Computing 15 SP7 libssh Released
SUSE Linux Enterprise Micro 5.1 libssh In progress
SUSE Linux Enterprise Micro 5.2 libssh In progress
SUSE Linux Enterprise Micro 5.3 libssh In progress
SUSE Linux Enterprise Micro 5.4 libssh In progress
SUSE Linux Enterprise Micro 5.5 libssh In progress
SUSE Linux Enterprise Module for Basesystem 15 SP6 libssh Released
SUSE Linux Enterprise Module for Basesystem 15 SP7 libssh Released
SUSE Linux Enterprise Server 15 SP6 libssh Released
SUSE Linux Enterprise Server 15 SP7 libssh Released
SUSE Linux Enterprise Server 16.0 libssh Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP6 libssh Released
SUSE Linux Enterprise Server for SAP Applications 15 SP7 libssh Released
SUSE Linux Enterprise Server for SAP Applications 16.0 libssh Affected
SUSE Linux Micro 6.0 libssh Affected
SUSE Linux Micro 6.1 libssh Affected
SUSE Linux Micro 6.2 libssh Affected
openSUSE Leap 15.6 libssh Released
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise High Performance Computing 15 SP3 libssh Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS libssh Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS libssh Affected
SUSE Linux Enterprise High Performance Computing 15 SP4 libssh Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS libssh Affected
SUSE Linux Enterprise High Performance Computing 15 SP5 libssh Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS libssh Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS libssh Affected
SUSE Linux Enterprise Module for Basesystem 15 SP3 libssh Affected
SUSE Linux Enterprise Module for Basesystem 15 SP4 libssh Affected
SUSE Linux Enterprise Module for Basesystem 15 SP5 libssh Affected
SUSE Linux Enterprise Server 12 SP5 libssh Affected
SUSE Linux Enterprise Server 12 SP5-LTSS libssh Affected
SUSE Linux Enterprise Server 12 SP5-LTSS Extended Security libssh Released
SUSE Linux Enterprise Server 15 SP3 libssh Affected
SUSE Linux Enterprise Server 15 SP3-LTSS libssh Affected
SUSE Linux Enterprise Server 15 SP4 libssh Affected
SUSE Linux Enterprise Server 15 SP4-LTSS libssh Affected
SUSE Linux Enterprise Server 15 SP5 libssh Affected
SUSE Linux Enterprise Server 15 SP5-LTSS libssh Affected
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 libssh In progress
SUSE Linux Enterprise Server for SAP Applications 12 SP5 libssh Affected
SUSE Manager Proxy 4.3 libssh Affected
SUSE Manager Proxy LTS 4.3 libssh Affected
SUSE Manager Retail Branch Server 4.3 libssh Affected
SUSE Manager Retail Branch Server LTS 4.3 libssh Affected
SUSE Manager Server 4.3 libssh Affected
SUSE Manager Server LTS 4.3 libssh Affected
Products past their end of life and not receiving proactive updates anymore.
SUSE CaaS Platform 4.0 libssh Affected
SUSE Enterprise Storage 6 libssh Affected
SUSE Enterprise Storage 7 libssh Affected
SUSE Enterprise Storage 7.1 libssh Affected
SUSE Linux Enterprise Desktop 12 libssh Affected
SUSE Linux Enterprise Desktop 12 SP1 libssh Affected
SUSE Linux Enterprise Desktop 12 SP2 libssh Affected
SUSE Linux Enterprise Desktop 12 SP3 libssh Affected
SUSE Linux Enterprise Desktop 12 SP4 libssh Affected
SUSE Linux Enterprise Desktop 15 libssh Affected
SUSE Linux Enterprise Desktop 15 SP1 libssh Affected
SUSE Linux Enterprise Desktop 15 SP2 libssh Affected
SUSE Linux Enterprise Desktop 15 SP3 libssh Affected
SUSE Linux Enterprise Desktop 15 SP4 libssh Affected
SUSE Linux Enterprise Desktop 15 SP5 libssh Affected
SUSE Linux Enterprise High Performance Computing 15 libssh Affected
SUSE Linux Enterprise High Performance Computing 15 SP1 libssh Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS libssh Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS libssh Affected
SUSE Linux Enterprise High Performance Computing 15 SP2 libssh Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS libssh Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS libssh Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS libssh Affected
SUSE Linux Enterprise High Performance Computing 15-ESPOS libssh Affected
SUSE Linux Enterprise High Performance Computing 15-LTSS libssh Affected
SUSE Linux Enterprise Micro 5.0 libssh Affected
SUSE Linux Enterprise Module for Basesystem 15 libssh Affected
SUSE Linux Enterprise Module for Basesystem 15 SP1 libssh Affected
SUSE Linux Enterprise Module for Basesystem 15 SP2 libssh Affected
SUSE Linux Enterprise Real Time 15 SP2 libssh Affected
SUSE Linux Enterprise Real Time 15 SP3 libssh Affected
SUSE Linux Enterprise Real Time 15 SP4 libssh Affected
SUSE Linux Enterprise Server 12 libssh Affected
SUSE Linux Enterprise Server 12 SP1 libssh Affected
SUSE Linux Enterprise Server 12 SP2 libssh Affected
SUSE Linux Enterprise Server 12 SP3 libssh Affected
SUSE Linux Enterprise Server 12 SP4 libssh Affected
SUSE Linux Enterprise Server 12 SP4-ESPOS libssh Affected
SUSE Linux Enterprise Server 12 SP4-LTSS libssh Affected
SUSE Linux Enterprise Server 15 libssh Affected
SUSE Linux Enterprise Server 15 SP1 libssh Affected
SUSE Linux Enterprise Server 15 SP1-BCL libssh Affected
SUSE Linux Enterprise Server 15 SP1-LTSS libssh Affected
SUSE Linux Enterprise Server 15 SP2 libssh Affected
SUSE Linux Enterprise Server 15 SP2-BCL libssh Affected
SUSE Linux Enterprise Server 15 SP2-LTSS libssh Affected
SUSE Linux Enterprise Server 15 SP3-BCL libssh Affected
SUSE Linux Enterprise Server 15-LTSS libssh Affected
SUSE Linux Enterprise Server for SAP Applications 12 libssh Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP1 libssh Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP2 libssh Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP3 libssh Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP4 libssh Affected
SUSE Linux Enterprise Server for SAP Applications 15 libssh Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 libssh Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 libssh Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP3 libssh Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP4 libssh Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP5 libssh Affected
SUSE Linux Enterprise Software Development Kit 12 libssh Affected
SUSE Linux Enterprise Software Development Kit 12 SP1 libssh Affected
SUSE Linux Enterprise Software Development Kit 12 SP2 libssh Affected
SUSE Linux Enterprise Software Development Kit 12 SP3 libssh Affected
SUSE Linux Enterprise Software Development Kit 12 SP4 libssh Affected
SUSE Linux Enterprise Software Development Kit 12 SP5 libssh Affected
SUSE Linux Enterprise Workstation Extension 12 libssh Affected
SUSE Linux Enterprise Workstation Extension 12 SP1 libssh Affected
SUSE Linux Enterprise Workstation Extension 12 SP2 libssh Affected
SUSE Linux Enterprise Workstation Extension 12 SP3 libssh Affected
SUSE Manager Proxy 4.0 libssh Affected
SUSE Manager Proxy 4.1 libssh Affected
SUSE Manager Proxy 4.2 libssh Affected
SUSE Manager Retail Branch Server 4.0 libssh Affected
SUSE Manager Retail Branch Server 4.1 libssh Affected
SUSE Manager Retail Branch Server 4.2 libssh Affected
SUSE Manager Server 4.0 libssh Affected
SUSE Manager Server 4.1 libssh Affected
SUSE Manager Server 4.2 libssh Affected
SUSE OpenStack Cloud 9 libssh Affected
SUSE OpenStack Cloud Crowbar 9 libssh Affected
openSUSE Leap 15.3 libssh Affected
openSUSE Leap 15.4 libssh Affected
openSUSE Leap 15.5 libssh Affected
openSUSE Leap Micro 5.2 libssh Affected
openSUSE Leap Micro 5.3 libssh Affected
openSUSE Leap Micro 5.4 libssh Affected
openSUSE Leap Micro 5.5 libssh Affected

SUSE Timeline for this CVE

CVE page created: Tue Sep 9 14:00:20 2025
CVE page last modified: Sat Sep 27 16:27:01 2025