Deserialization of Untrusted Data in SCM Filter Jervis - CVE-2020-2189
Published: May 7, 2020
Vulnerability identifier: #VU27615
CSH Severity: Medium
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:Green
CVE-ID: CVE-2020-2189
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
SCM Filter Jervis
SCM Filter Jervis
Software vendor:
Jenkins
Jenkins
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to the affected plugin does not configure its YAML parser to prevent the instantiation of arbitrary types. A remote authenticated attacker able to configure jobs with the filter, 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.