CVE-2018-1999042 Deserialization of Untrusted Data in Jenkins

What is CVE-2018-1999042?

CVE-2018-1999042 is a medium-severity server-side request forgery vulnerability in Jenkins Jenkins, published on 23 Aug 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability exists in Jenkins 2.137 and earlier, 2.121.2 and earlier in XStream2.java that allows attackers to have Jenkins resolve a domain name when deserializing an instance of java.net.URL.

Weakness: CWE-502

Which versions are affected by CVE-2018-1999042?

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

Products include Jenkins Jenkins.

How do I fix CVE-2018-1999042?

Upgrade org.jenkins-ci.main:jenkins-core to a fixed version for your release line: 2.121.3 or 2.138.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2018-1999042 being exploited?

There is no known exploitation of CVE-2018-1999042 in the wild and no public exploit code.

Other vulnerabilities in Jenkins Jenkins

• CVE-2024-23897 Jenkins Command Line Interface (CLI) Path Traversal Exploited Critical 9.8
• CVE-2018-1000861 Jenkins Stapler Web Framework Deserialization of Untrusted Data Exploited Critical 9.8
• CVE-2017-1000353 Jenkins Remote Code Execution Exploited Critical 9.8
• CVE-2015-5317 Jenkins User Interface (UI) Information Disclosure Exploited High 7.5
• CVE-2021-21690 Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins Critical 9.8

All Jenkins Jenkins vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-28p3-mchr-9frj.