CVE-2022-34787 Jenkins Project Inheritance Plugin vulnerable to cross site scripting

Medium 5.4 Published 30 Jun 2022 Updated 3 Aug 2024

Attackers can inject malicious scripts into Jenkins build block reason tooltips, potentially compromising user sessions.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2022-34787?

CVE-2022-34787 is a medium-severity cross-site scripting vulnerability in Jenkins Project Inheritance Plugin, published on 30 Jun 2022. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

Jenkins Project Inheritance Plugin 21.04.03 and earlier does not escape the reason a build is blocked in tooltips, resulting in a cross-site scripting (XSS) vulnerability exploitable by attackers able to control the reason a queue item is blocked.

Weakness: CWE-79

Which versions are affected by CVE-2022-34787?

2 open source packages ship an affected version, including hudson.plugins:project-inheritance. It affects 1 product.

Package	Affected	Fixed in
`hudson.plugins:project-inheritance` Maven	All versions to `21.04.03`	None
`hudson.plugins:project-inheritance` Maven	All versions to `21.04.03`	None

Products include Jenkins Project Inheritance.

How do I fix CVE-2022-34787?

No fix has been published for CVE-2022-34787 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2022-34787 being exploited?

There is no known exploitation of CVE-2022-34787 in the wild and no public exploit code.

Sources

Also known as GHSA-3hx4-285w-v6mm.