CVE-2020-2096 Reflected XSS vulnerability in Jenkins gitlab-hook Plugin
Reflected XSS in Jenkins Gitlab Hook Plugin allows attackers to execute arbitrary scripts in victim browsers via unescaped project names.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-2096?
CVE-2020-2096 is a medium-severity cross-site scripting vulnerability in Jenkins Gitlab Hook Plugin, published on 15 Jan 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Jenkins Gitlab Hook Plugin 1.4.2 and earlier does not escape project names in the build_now endpoint, resulting in a reflected XSS vulnerability.
Weakness: CWE-79
Which versions are affected by CVE-2020-2096?
2 open source packages ship an affected version, including org.jenkins-ci.ruby-plugins:gitlab-hook. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.jenkins-ci.ruby-plugins:gitlab-hook Maven | All versions to 1.4.2 | None |
org.jenkins-ci.ruby-plugins:gitlab-hook Maven | All versions to 1.4.2 | None |
Products include Jenkins Gitlab Hook.
How do I fix CVE-2020-2096?
No fix has been published for CVE-2020-2096 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-2020-2096 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-2096 exists.
Public exploit code: 1 Exploit-DB entry and 1 Nuclei template.
Other vulnerabilities in Jenkins Gitlab Hook Plugin
Sources
Also known as GHSA-8696-836p-c8qp.