CVE-2019-10352 Improper Limitation of a Pathname to a Restricted Directory in Jenkins

Medium 6.5 Published Updated

Attackers with Job/Configure permission can write arbitrary files on the Jenkins master via path traversal in file parameters.

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-2019-10352?

CVE-2019-10352 is a medium-severity path traversal vulnerability in Jenkins Jenkins, published on 17 Jul 2019. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A path traversal vulnerability in Jenkins 2.185 and earlier, LTS 2.176.1 and earlier in core/src/main/java/hudson/model/FileParameterValue.java allowed attackers with Job/Configure permission to define a file parameter with a file name outside the intended directory, resulting in an arbitrary file write on the Jenkins master when scheduling a build.

Weakness: CWE-22

Which versions are affected by CVE-2019-10352?

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

PackageAffectedFixed in
org.jenkins-ci.main:jenkins-core MavenAll versions2.176.2
org.jenkins-ci.main:jenkins-core MavenAll versions2.176.2
org.jenkins-ci.main:jenkins-core MavenFrom 2.1772.186
org.jenkins-ci.main:jenkins-core MavenFrom 2.1772.186

Products include Jenkins Jenkins.

How do I fix CVE-2019-10352?

Upgrade org.jenkins-ci.main:jenkins-core to a fixed version for your release line: 2.176.2 or 2.186.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2019-10352 being exploited?

There is no known exploitation of CVE-2019-10352 in the wild and no public exploit code.

All Jenkins Jenkins vulnerabilities

Sources

Also known as GHSA-qr42-82qj-mw65.

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