Deserialization of Untrusted Data in Yaml Axis - CVE-2020-2179
Published: April 17, 2020
Vulnerability identifier: #VU26996
CSH Severity: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2020-2179
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Yaml Axis
Yaml Axis
Software vendor:
Jenkins
Jenkins
Description
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 updates from vendor's website.