SB2020041703 - Remote code execution in Jenkins Yaml Axis plugin

Description

This security bulletin contains information about 1 security vulnerability.

1) Deserialization of Untrusted Data (CVE-ID: CVE-2020-2179)

The vulnerability allows a remote user to execute arbitrary code on the target system.

The vulnerability exists due to the affected software does not configure its YAML parser to prevent the instantiation of arbitrary types. A remote user able to configure a multi-configuration (Matrix) job, or control the contents of a previously configured job’s SCM repository can pass specially crafted data to the application and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Install update from vendor's website.

References

• http://www.openwall.com/lists/oss-security/2020/04/16/4
• https://jenkins.io/security/advisory/2020-04-16/#SECURITY-1825