CVE-2020-2109 Improper Input Validation in Jenkins Pipeline: Groovy Plugin
Attackers can bypass Jenkins Groovy plugin sandbox restrictions via default parameter expressions, potentially executing arbitrary code.
- 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-2020-2109?
CVE-2020-2109 is a high-severity vulnerability in Jenkins Pipeline: Groovy Plugin, published on 12 Feb 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Sandbox protection in Jenkins Pipeline: Groovy Plugin 2.78 and earlier can be circumvented through default parameter expressions in CPS-transformed methods.
Weakness: CWE-20
Which versions are affected by CVE-2020-2109?
2 open source packages ship an affected version, including org.jenkins-ci.plugins.workflow:workflow-cps. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.jenkins-ci.plugins.workflow:workflow-cps Maven | All versions | 2.79 |
org.jenkins-ci.plugins.workflow:workflow-cps Maven | All versions | 2.79 |
Products include Jenkins Pipeline\.
How do I fix CVE-2020-2109?
Upgrade org.jenkins-ci.plugins.workflow:workflow-cps to 2.79 or later.
Is CVE-2020-2109 being exploited?
There is no known exploitation of CVE-2020-2109 in the wild and no public exploit code.
Other vulnerabilities in Jenkins Pipeline: Groovy Plugin
- CVE-2019-1003030 Jenkins Matrix Project Plugin Remote Code Execution
- CVE-2022-43402 Jenkins Pipeline: Groovy Plugin allows sandbox protection bypass and arbitrary code execution
- CVE-2019-1003041 Sandbox bypass vulnerability in Jenkins Pipeline: Groovy Plugin
- CVE-2022-43407 CSRF protection for any URL can be bypassed in Jenkins Pipeline: Input Step Plugin
- CVE-2022-25173 Improper Neutralization of Special Elements used in an OS Command in Jenkins Pipeline: Groovy Plugin
Sources
Also known as GHSA-99mf-f3qh-wqrp.