CVE-2015-8103 Jenkins CLI Deserialization of Untrusted Data vulnerability

What is CVE-2015-8103?

CVE-2015-8103 is a critical unsafe deserialization vulnerability in Jenkins Jenkins, published on 25 Nov 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The Jenkins CLI subsystem in Jenkins before 1.638 and LTS before 1.625.2 allows remote attackers to execute arbitrary code via a crafted serialized Java object, related to a problematic webapps/ROOT/WEB-INF/lib/commons-collections-*.jar file and the "Groovy variant in 'ysoserial'".

Weakness: CWE-502

Which versions are affected by CVE-2015-8103?

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

Products include Jenkins Jenkins, Redhat Openshift Container Platform.

How do I fix CVE-2015-8103?

Upgrade org.jenkins-ci.main:cli to a fixed version for your release line: 1.625.2 or 1.638.

Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.

Is CVE-2015-8103 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2015-8103 exists.

Public exploit code: 3 Metasploit modules, 1 Exploit-DB entry and 2 proofs of concept on GitHub.

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-wfw7-6632-xcv2, MGASA-2016-0137.