CVE-2020-2113 Jenkins Git Parameter Plugin vulnerable to stored cross-site scripting (XSS)

Medium 5.4 Published 12 Feb 2020 Updated 4 Aug 2024

Stored XSS in Jenkins Git Parameter Plugin allows attackers with Job/Configure permission to execute scripts in other users' browsers.

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: Available

What is CVE-2020-2113?

CVE-2020-2113 is a medium-severity cross-site scripting vulnerability in Jenkins Git Parameter Plugin, published on 12 Feb 2020. 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 Git Parameter Plugin 0.9.11 and earlier does not escape the default value shown on the UI, resulting in a stored cross-site scripting vulnerability exploitable by users with Job/Configure permission.

Weakness: CWE-79

Which versions are affected by CVE-2020-2113?

2 open source packages ship an affected version, including org.jenkins-ci.tools:git-parameter. It affects 1 product.

Package	Affected	Fixed in
`org.jenkins-ci.tools:git-parameter` Maven	All versions	`0.9.12`
`org.jenkins-ci.tools:git-parameter` Maven	All versions	`0.9.12`

Products include Jenkins Git Parameter.

How do I fix CVE-2020-2113?

Upgrade org.jenkins-ci.tools:git-parameter to 0.9.12 or later.

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-2020-2113 being exploited?

There is no known exploitation of CVE-2020-2113 in the wild and no public exploit code.

Sources

Also known as GHSA-fgxc-mxvw-55mv.