CVE-2018-1000861

Name of the Vulnerable Software and Affected Versions Jenkins versions 2.153 and earlier Jenkins LTS versions 2.138.3 and earlier

Description A code execution issue exists in the Stapler web framework used by Jenkins, specifically in the MetaClass.java file, allowing attackers to invoke certain methods on Java objects by accessing crafted URLs. This is related to the deserialization of untrusted data, which can be exploited by a remote attacker to execute arbitrary code.

Recommendations For Jenkins versions 2.153 and earlier, update to a version that includes the fix for the deserialization vulnerability. For Jenkins LTS versions 2.138.3 and earlier, update to a version that includes the fix for the deserialization vulnerability. As a temporary workaround, consider restricting access to the MetaClass.java component in the Stapler web framework to minimize the risk of exploitation.