CVE-2020-2134 Sandbox bypass vulnerability in Script Security Plugin

High 8.8 Published Updated

Attackers can bypass sandbox restrictions in the Jenkins Script Security Plugin to execute arbitrary code via crafted constructor calls.

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-2020-2134?

CVE-2020-2134 is a high-severity vulnerability in Jenkins Script Security Plugin, published on 9 Mar 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Sandbox protection in Jenkins Script Security Plugin 1.70 and earlier could be circumvented through crafted constructor calls and crafted constructor bodies.

Weakness: CWE-863

Which versions are affected by CVE-2020-2134?

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

PackageAffectedFixed in
org.jenkins-ci.plugins:script-security MavenAll versions1.7.1
org.jenkins-ci.plugins:script-security MavenAll versions1.7.1

Products include Jenkins Script Security.

How do I fix CVE-2020-2134?

Upgrade org.jenkins-ci.plugins:script-security to 1.7.1 or later.

Is CVE-2020-2134 being exploited?

There is no known exploitation of CVE-2020-2134 in the wild and no public exploit code.

Sources

Also known as GHSA-gj3q-p8cm-26rm.

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