Security Vulnerability: openssh remote code execution via SSH agent forwarding (CVE-2023-38408)

This document (000021143) is provided subject to the disclaimer at the end of this document.


For a comprehensive list of affected products please visit the SUSE CVE announcement:


Security engineers at Qualys have identified a remote code execution vulnerability within forwarded SSH agents.

Attackers must be able to access a host via ssh to escalate privileges on that host by exploiting a flaw in the pkcs11 module loading of the ssh agent. As the pkcs11 agent helper allowed loading of system dynamic libraries, certain
loading patterns and problems in system libraries could be used to gain code execution as the pkcs11 helper.


SUSE is working on releasing fixed openssh packages.


Security Alert

Additional Information


In case PKCS11 smartcard are not used for SSH agent support, remove /usr/lib/ssh/ssh-pkcs11-helper from the system until maintenance updates have been released.

Additional references:


This Support Knowledgebase provides a valuable tool for SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.

  • Document ID:000021143
  • Creation Date: 20-Jul-2023
  • Modified Date:20-Jul-2023
    • SUSE Linux Enterprise Desktop
    • SUSE Linux Enterprise Server
    • SUSE Linux Enterprise Server for SAP Applications
    • SUSE Manager Server
    • SUSE Linux Enterprise Micro

< Back to Support Search

For questions or concerns with the SUSE Knowledgebase please contact: tidfeedback[at]

SUSE Support Forums

Get your questions answered by experienced Sys Ops or interact with other SUSE community experts.

Join Our Community

Support Resources

Learn how to get the most from the technical support you receive with your SUSE Subscription, Premium Support, Academic Program, or Partner Program.

SUSE Customer Support Quick Reference Guide SUSE Technical Support Handbook Update Advisories
Support FAQ

Open an Incident

Open an incident with SUSE Technical Support, manage your subscriptions, download patches, or manage user access.

Go to Customer Center