CVE-2020-2191 Improper permission checks in Jenkins Swarm Plugin
Attackers can add or remove agent labels via API endpoints without proper permission checks, potentially disrupting Jenkins build operations.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-2191?
CVE-2020-2191 is a medium-severity missing authorization vulnerability in Jenkins Self-Organizing Swarm Plug-in Modules Plugin, published on 3 Jun 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Jenkins Self-Organizing Swarm Plug-in Modules Plugin 3.20 and earlier does not check permissions on API endpoints that allow adding and removing agent labels.
Weakness: CWE-276
Which versions are affected by CVE-2020-2191?
2 open source packages ship an affected version, including org.jenkins-ci.plugins:swarm. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.jenkins-ci.plugins:swarm Maven | All versions | 3.21 |
org.jenkins-ci.plugins:swarm Maven | All versions | 3.21 |
Products include Jenkins Self-Organizing Swarm Modules.
How do I fix CVE-2020-2191?
Upgrade org.jenkins-ci.plugins:swarm to 3.21 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2020-2191 being exploited?
There is no known exploitation of CVE-2020-2191 in the wild and no public exploit code.
Other vulnerabilities in Jenkins Self-Organizing Swarm Plug-in Modules Plugin
Sources
Also known as GHSA-j852-mp82-wv2g.