CVE-2020-2137 Stored XSS vulnerability in Jenkins Timestamper Plugin
Stored XSS in Jenkins Timestamper Plugin allows attackers with admin permissions to execute arbitrary scripts in victim browsers.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2020-2137?
CVE-2020-2137 is a medium-severity cross-site scripting vulnerability in Jenkins Timestamper Plugin, published on 9 Mar 2020. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
Jenkins Timestamper Plugin 1.11.1 and earlier does not sanitize HTML formatting of its output, resulting in a stored XSS vulnerability exploitable by attackers with Overall/Administer permission.
Weakness: CWE-79
Which versions are affected by CVE-2020-2137?
2 open source packages ship an affected version, including org.jenkins-ci.plugins:timestamper. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.jenkins-ci.plugins:timestamper Maven | All versions | 1.11.2 |
org.jenkins-ci.plugins:timestamper Maven | All versions | 1.11.2 |
Products include Jenkins Timestamper.
How do I fix CVE-2020-2137?
Upgrade org.jenkins-ci.plugins:timestamper to 1.11.2 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-2020-2137 being exploited?
There is no known exploitation of CVE-2020-2137 in the wild and no public exploit code.
Sources
Also known as GHSA-6xxf-rwv4-mrjm.