CVE-2019-10393 Sandbox bypass vulnerability in Script Security Plugin

Medium 4.2 Published 12 Sep 2019 Updated 4 Aug 2024

Attackers can bypass the sandbox to execute arbitrary code in Jenkins scripts, compromising the CI/CD server.

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-2019-10393?

CVE-2019-10393 is a medium-severity code injection vulnerability in Jenkins Script Security Plugin, published on 12 Sep 2019. 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 1.62 and earlier related to the handling of method names in method call expressions allowed attackers to execute arbitrary code in sandboxed scripts.

Which versions are affected by CVE-2019-10393?

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

Package	Affected	Fixed in
`org.jenkins-ci.plugins:script-security` Maven	All versions	`1.63`
`org.jenkins-ci.plugins:script-security` Maven	All versions	`1.63`

Products include Jenkins Script Security.

How do I fix CVE-2019-10393?

Upgrade org.jenkins-ci.plugins:script-security to 1.63 or later.

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

Is CVE-2019-10393 being exploited?

There is no known exploitation of CVE-2019-10393 in the wild and no public exploit code.

Sources

Also known as GHSA-9fp8-64xf-w957.