CVE-2017-1000089 Jenkins Build Step Plugin fails to check Item/Build permission

Medium 5.3 Published Updated

The Jenkins Pipeline Build Step Plugin fails to verify build authentication, allowing attackers to trigger unauthorized projects and escalate privileges.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2017-1000089?

CVE-2017-1000089 is a medium-severity missing authorization vulnerability in n/a, published on 4 Oct 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Builds in Jenkins are associated with an authentication that controls the permissions that the build has to interact with other elements in Jenkins. The Pipeline: Build Step Plugin did not check the build authentication it was running as and allowed triggering any other project in Jenkins.

Weakness: CWE-276

Which versions are affected by CVE-2017-1000089?

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

PackageAffectedFixed in
org.jenkins-ci.plugins:pipeline-build-step MavenAll versions2.5.1
org.jenkins-ci.plugins:pipeline-build-step MavenAll versions2.5.1

Products include Jenkins Pipeline\.

How do I fix CVE-2017-1000089?

Upgrade org.jenkins-ci.plugins:pipeline-build-step to 2.5.1 or later.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2017-1000089 being exploited?

There is no known exploitation of CVE-2017-1000089 in the wild and no public exploit code.

Sources

Also known as GHSA-8jx9-7j5m-79x4.

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