SB2020021303 - Sandbox restrictions bypass in Script Security plugin for Jenkins
Published: February 13, 2020
Security Bulletin ID
SB2020021303
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-2020-2110)
The vulnerability allows a remote user to escalate privileges on the system.
The vulnerability exists due to the sandbox protection in the affected plugin can be circumvented during the script compilation phase by applying AST transforming annotations such as "@Grab" to imports or by using them inside of other annotations. A remote user with Overall/Read permission can bypass sandbox protection and execute arbitrary code in the context of the Jenkins master JVM.
Remediation
Install update from vendor's website.