CVE-2025-32755: ssh-slave Weak RNG — Fix

Description

In jenkins/ssh-slave Docker images based on Debian, SSH host keys are generated on image creation for images based on Debian, causing all containers based on images of the same version 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.

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CVSS v3.1 Score

9.1

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weakness Type (CWE)

CWE-338 CWE-338

Affected Products

Vendor	Product	Versions
jenkins	ssh-slave	All

References

Advisories & Patches

https://www.jenkins.io/security/advisory/2025-04-10/#SECURITY-3565

Frequently Asked Questions

What is CVE-2025-32755? +

In jenkins/ssh-slave Docker images based on Debian, SSH host keys are generated on image creation for images based on Debian, causing all containers based on images of the same version 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. It has a CVSS v3.1 base score of 9.1 (CRITICAL).

How severe is CVE-2025-32755? +

CVE-2025-32755 has a CVSS v3.1 score of 9.1 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2025-32755? +

CVE-2025-32755 affects products from jenkins, specifically: ssh-slave. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-32755? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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