Description
Jenkins versions 2.56 and earlier as well as 2.46.1 LTS and earlier are vulnerable to an unauthenticated remote code execution. An unauthenticated remote code execution vulnerability allowed attackers to transfer a serialized Java `SignedObject` object to the Jenkins CLI, that would be deserialized using a new `ObjectInputStream`, bypassing the existing blacklist-based protection mechanism. We're fixing this issue by adding `SignedObject` to the blacklist. We're also backporting the new HTTP CLI protocol from Jenkins 2.54 to LTS 2.46.2, and deprecating the remoting-based (i.e. Java serialization) CLI protocol, disabling it by default.
Remediation
References
Related Vulnerabilities
WordPress Plugin wp superb Slideshow Information Disclosure (2.4)
Apache 2.x version equal to 2.0.51
Moodle Exposure of Resource to Wrong Sphere Vulnerability (CVE-2017-7490)
Drupal Core 6.x Multiple Vulnerabilities (6.0 - 6.2)
Moodle Permissions, Privileges, and Access Controls Vulnerability (CVE-2014-7837)