CVE-2020-2175 Stored XSS vulnerability in Jenkins FitNesse Plugin

Medium 5.4 Published Updated

Stored XSS in Jenkins FitNesse Plugin allows attackers to execute scripts in the Jenkins UI via malicious XML input files.

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-2020-2175?

CVE-2020-2175 is a medium-severity cross-site scripting vulnerability in Jenkins FitNesse Plugin, published on 7 Apr 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 FitNesse Plugin 1.31 and earlier does not correctly escape report contents before showing them on the Jenkins UI, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by users able to control the XML input files processed by the plugin.

Weakness: CWE-79

Which versions are affected by CVE-2020-2175?

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

PackageAffectedFixed in
org.jenkins-ci.plugins:fitnesse MavenAll versions1.32
org.jenkins-ci.plugins:fitnesse MavenAll versions1.32

Products include Jenkins Fitnesse.

How do I fix CVE-2020-2175?

Upgrade org.jenkins-ci.plugins:fitnesse to 1.32 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-2020-2175 being exploited?

There is no known exploitation of CVE-2020-2175 in the wild and no public exploit code.

Sources

Also known as GHSA-f6vx-3fq6-hxm8.

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