CVE-2020-2279 Sandbox bypass vulnerability in Jenkins Script Security Plugin

What is CVE-2020-2279?

CVE-2020-2279 is a critical code injection vulnerability in Jenkins Script Security Plugin, published on 23 Sep 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A sandbox bypass vulnerability in Jenkins Script Security Plugin 1.74 and earlier allows attackers with permission to define sandboxed scripts to provide crafted return values or script binding content that can result in arbitrary code execution on the Jenkins controller JVM.

Which versions are affected by CVE-2020-2279?

4 open source packages ship an affected version, including org.jenkins-ci.plugins:script-security. It affects 1 product.

Products include Jenkins Script Security.

How do I fix CVE-2020-2279?

Upgrade org.jenkins-ci.plugins:script-security to a fixed version for your release line: 1.66.5 or 1.75.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2020-2279 being exploited?

There is no known exploitation of CVE-2020-2279 in the wild and no public exploit code.

Other vulnerabilities in Jenkins Script Security Plugin

• CVE-2019-1003029 Jenkins Script Security Plugin Sandbox Bypass Exploited Critical 9.9
• CVE-2022-43401 Sandbox bypass vulnerabilities in Jenkins Script Security Plugin and in Pipeline: Groovy Plugin Critical 9.9
• CVE-2022-43403 Jenkins Script Security Plugin sandbox bypass vulnerability Critical 9.9
• CVE-2022-43404 Sandbox bypass vulnerabilities in Jenkins Script Security Plugin and in Pipeline: Groovy Plugin Critical 9.9
• CVE-2019-10431 Improper Control of Generation of Code in Jenkins Script Security Plugin Critical 9.9

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-ccr8-4xr7-cgj3.