SB2020021302 - Sandbox restrictions bypass in Pipeline: Groovy plugin for Jenkins
Published: February 13, 2020
Security Bulletin ID
SB2020021302
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2020-2109)
The vulnerability allows a remote attacker to escalate privileges on the system.
The vulnerability exists due to the sandbox protection in the affected plugin can be circumvented through default parameter expressions in CPS-transformed methods. A remote authenticated attacker can specify and run sandboxed Pipelines to execute arbitrary code in the context of the Jenkins master JVM.Remediation
Install update from vendor's website.