Deserialization of Untrusted Data in Code Coverage API - CVE-2021-21677
Published: September 1, 2021
Vulnerability identifier: #VU56227
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-2021-21677
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Code Coverage API
Code Coverage API
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 apply Jenkins JEP-200 deserialization protection to Java objects it deserializes from disk. A remote authenticated attacker 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.