SB2020031128 - Multiple vulnerabilities in Jenkins Script Security Plugin

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2020-2134)

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 constructor calls and bodies. A remote authenticated attacker can specify and run sandboxed scripts to execute arbitrary code in the context of the Jenkins master JVM.

2) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2020-2135)

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.

Remediation

Install update from vendor's website.

References

• http://www.openwall.com/lists/oss-security/2020/03/09/1
• https://jenkins.io/security/advisory/2020-03-09/#SECURITY-1754