Jenkins CLI Deserialization
Description
An unauthenticated Java object deserialization vulnerability exists in the CLI component for Jenkins versions `v2.56` and below. The `readFrom` method within the `Command` class in the Jenkins CLI remoting component deserializes objects received from clients without first checking / sanitizing the data. Because of this, a malicious serialized object contained within a serialized `SignedObject` can be sent to the Jenkins endpoint to achieve code execution on the target.
Author(s)
- SSD
- Unknown
- Shelby Pace
Platform
Linux
Architectures
x86, x64
Development
Module Options
To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':
msf > use exploit/linux/http/jenkins_cli_deserialization
msf exploit(jenkins_cli_deserialization) > show targets
...targets...
msf exploit(jenkins_cli_deserialization) > set TARGET < target-id >
msf exploit(jenkins_cli_deserialization) > show options
...show and set options...
msf exploit(jenkins_cli_deserialization) > exploit
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