Permissions, Privileges, and Access Controls in Script Security - CVE-2020-2135
Published: March 11, 2020
Vulnerability identifier: #VU26005
CSH Severity: High
CVSS v4.0: 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-2020-2135
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Jenkins
Affected software:
Script Security
Script Security
Detailed vulnerability description
The vulnerability allows a remote attacker to escalate privileges on the system.
The vulnerability exists due to the Sandbox protection can be circumvented through a crafted method calls on objects that implement "GroovyInterceptable". A remote authenticated attacker can specify and run sandboxed scripts to execute arbitrary code in the context of the Jenkins master JVM.
How to mitigate CVE-2020-2135
Install updates from vendor's website.