SB2020093082 - Sandbox restrictions bypass in Jenkins Script Security plugin

Description

This security bulletin contains information about 1 vulnerability.

1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2020-2279)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: 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

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to the sandbox protection bypass in the affected plugin. A remote authenticated attacker can provide a specially crafted return values or script binding content and execute arbitrary code on the Jenkins controller JVM.

Remediation

Install update from vendor's website.

References

• http://www.openwall.com/lists/oss-security/2020/09/23/1
• https://www.jenkins.io/security/advisory/2020-09-23/#SECURITY-2020