CVE-2020-2122 Stored XSS vulnerability in Jenkins brakeman Plugin
Stored XSS in Jenkins Brakeman Plugin allows attackers controlling build inputs 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-2020-2122?
CVE-2020-2122 is a medium-severity cross-site scripting vulnerability in Jenkins Brakeman 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 Brakeman Plugin 0.12 and earlier did not escape values received from parsed JSON files when rendering them, resulting in a stored cross-site scripting vulnerability exploitable by users able to control the Brakeman post-build step input data.
Weakness: CWE-79
Which versions are affected by CVE-2020-2122?
2 open source packages ship an affected version, including org.jenkins-ci.plugins:brakeman. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.jenkins-ci.plugins:brakeman Maven | All versions | 0.13 |
org.jenkins-ci.plugins:brakeman Maven | All versions | 0.13 |
Products include Jenkins Brakeman.
How do I fix CVE-2020-2122?
Upgrade org.jenkins-ci.plugins:brakeman to 0.13 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-2020-2122 being exploited?
There is no known exploitation of CVE-2020-2122 in the wild and no public exploit code.
Sources
Also known as GHSA-7q9r-vhg2-789w.