CVE-2018-1000194 Path Traversal in Jenkins

High 8.1 Published Updated

Malicious agents can read and write arbitrary files on the Jenkins master, bypassing security protections.

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-2018-1000194?

CVE-2018-1000194 is a high-severity path traversal vulnerability in Jenkins Jenkins, published on 5 Jun 2018. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A path traversal vulnerability exists in Jenkins 2.120 and older, LTS 2.107.2 and older in FilePath.java, SoloFilePathFilter.java that allows malicious agents to read and write arbitrary files on the Jenkins master, bypassing the agent-to-master security subsystem protection.

Weakness: CWE-22

Which versions are affected by CVE-2018-1000194?

4 open source packages ship an affected version, including org.jenkins-ci.main:jenkins-core. It affects 2 products.

PackageAffectedFixed in
org.jenkins-ci.main:jenkins-core MavenAll versions2.107.3
org.jenkins-ci.main:jenkins-core MavenAll versions2.107.3
org.jenkins-ci.main:jenkins-core MavenFrom 2.1082.121
org.jenkins-ci.main:jenkins-core MavenFrom 2.1082.121

Products include Jenkins Jenkins, Oracle Communications Cloud Native Core Automated Test Suite.

How do I fix CVE-2018-1000194?

Upgrade org.jenkins-ci.main:jenkins-core to a fixed version for your release line: 2.107.3 or 2.121.

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

Is CVE-2018-1000194 being exploited?

There is no known exploitation of CVE-2018-1000194 in the wild and no public exploit code.

All Jenkins Jenkins vulnerabilities

Sources

Also known as GHSA-x646-m7x2-gcp7.

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