Detections
Analytics

Jenkins ssh-agent Docker Image < 6.11.2 SSH Host Key Reuse

critical Nessus Plugin ID 248556

Synopsis

A docker container on the remote host is affected by an SSH host key reuse vulnerability.

Description

According to their self-reported version numbers, the jenkins/ssh-agent docker containers running on the remote web server are affected by an SSH host key reuse vulnerability. In jenkins/ssh-agent Docker images 6.11.1 and earlier, SSH host keys are generated on image creation for images based on Debian, causing all containers based on images of the same version to use the same SSH host keys, allowing attackers able to insert themselves into the network path between the SSH client (typically the Jenkins controller) and SSH build agent to impersonate the latter.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade docker containers using jenkins/ssh-agent to 6.11.2 or later.

See Also

https://www.jenkins.io/security/advisory/2025-04-10/

Plugin Details

Severity: Critical

ID: 248556

File Name: jenkins_security_advisory_2025-04-10_ssh_agent.nasl

Version: 1.1

Type: local

Agent: unix

Family: Misc.

Published: 8/12/2025

Updated: 8/12/2025

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: High

Base Score: 9.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

CVSS Score Source: CVE-2025-32754

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Vulnerability Information

CPE: cpe:/a:jenkins:ssh-agent

Required KB Items: Service/docker

Patch Publication Date: 4/10/2025

Vulnerability Publication Date: 4/10/2025

Reference Information

CVE: CVE-2025-32754