CVE-2018-1000866 Jenkins Script Security and Pipeline Groovy Plugins Sandbox Bypass

High 8.8 Published Updated

Attackers with specific permissions can bypass the Groovy sandbox to execute arbitrary code on the Jenkins master JVM.

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-2018-1000866?

CVE-2018-1000866 is a high-severity code injection vulnerability in Redhat Openshift Container Platform, published on 10 Dec 2018. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A sandbox bypass vulnerability exists in Pipeline: Groovy Plugin 2.59 and earlier in groovy-sandbox/src/main/java/org/kohsuke/groovy/sandbox/SandboxTransformer.java, groovy-cps/lib/src/main/java/com/cloudbees/groovy/cps/SandboxCpsTransformer.java that allows attackers with Job/Configure permission, or unauthorized attackers with SCM commit privileges and corresponding pipelines based on Jenkinsfiles set up in Jenkins, to execute arbitrary code on the Jenkins master JVM

Weakness: CWE-269

Which versions are affected by CVE-2018-1000866?

4 open source packages ship an affected version, including org.jenkins-ci.plugins.workflow:workflow-cps and org.jenkins-ci.plugins:script-security. It affects 2 products.

PackageAffectedFixed in
org.jenkins-ci.plugins.workflow:workflow-cps MavenAll versions2.60
org.jenkins-ci.plugins.workflow:workflow-cps MavenAll versions2.60
org.jenkins-ci.plugins:script-security MavenAll versions1.48
org.jenkins-ci.plugins:script-security MavenAll versions1.48

Products include Jenkins Pipeline\, Redhat Openshift Container Platform.

How do I fix CVE-2018-1000866?

Upgrade org.jenkins-ci.plugins.workflow:workflow-cps to 2.60 or later.

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

Is CVE-2018-1000866 being exploited?

There is no known exploitation of CVE-2018-1000866 in the wild and no public exploit code.

All Redhat Openshift Container Platform vulnerabilities

Sources

Also known as GHSA-gqhm-4h93-rrhg.

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