Permissions, Privileges, and Access Controls in Script Security - CVE-2019-10356

Vulnerability identifier: #VU21566

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-2019-10356

CWE-ID: CWE-264

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vendor: Jenkins

Affected software:
Script Security

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

The vulnerability exists due to the sandbox protection can be circumvented through crafted subexpressions used as arguments to method pointer expressions. A remote authenticated attacker who is able to specify sandboxed scripts can execute arbitrary code in the context of the Jenkins master JVM.

Install updates from vendor's website.

• http://www.openwall.com/lists/oss-security/2019/07/31/1
• https://jenkins.io/security/advisory/2019-07-31/#SECURITY-1465%20(2)