SB2025041509 - Host key reuse in Jenkins ssh-agent Docker images



SB2025041509 - Host key reuse in Jenkins ssh-agent Docker images

Published: April 15, 2025

Security Bulletin ID SB2025041509
Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Reusing a Nonce, Key Pair in Encryption (CVE-ID: CVE-2025-32754)

The vulnerability allows a remote attacker to compromise the target system. 

The vulnerability exists due to SSH host keys are generated on image creation for images based on Debian. A remote attacker can insert themselves into the network path between the SSH client and SSH build agent to impersonate the latter.


Remediation

Install update from vendor's website.