module

Jenkins CLI Deserialization

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Disclosed
2017-04-26
Created
2020-09-22

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.

Authors

SSD
Unknown
Shelby Pace

Platform

Linux

Architectures

x86, x64

References

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
Title
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