PT-2020-15343 · Jenkins · Jenkins Script Security Plugin+1

Nils Emmerich · Published 2020-03-09 · Updated 2023-10-25 · CVE-2020-2134

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Jenkins Script Security Plugin versions 1.70 and earlier

Description The sandbox protection in the Jenkins Script Security Plugin could be circumvented through crafted constructor calls and bodies, as well as crafted method calls on objects that implement GroovyInterceptable. This allows attackers who can specify and run sandboxed scripts to execute arbitrary code in the context of the Jenkins controller JVM.

Recommendations For Jenkins Script Security Plugin versions 1.70 and earlier, update to version 1.71 or later, which includes additional restrictions and sanity checks to prevent the circumvention of sandbox protection. As a temporary workaround, consider restricting the use of crafted constructor calls and bodies, as well as method calls on objects that implement GroovyInterceptable, until a patch is available.

Fix

Protection Mechanism Failure

Incorrect Authorization

Weakness Enumeration

CWE-693

CWE-863

Related Identifiers

CVE-2020-2134

GHSA-GJ3Q-P8CM-26RM

RHSA-2020:2478

RHSA-2020:2737

RHSA-2020:3616

Affected Products

Jenkins

Jenkins Script Security Plugin

References · 7

• https://jenkins.io/security/advisory/2020-03-09/#SECURITY-1754 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-gj3q-p8cm-26rm · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-2134 · Security Note
• https://osv.dev/vulnerability/CVE-2020-2134 · Vendor Advisory
• https://github.com/jenkinsci/script-security-plugin · Note
• https://github.com/jenkinsci/script-security-plugin/commit/5b1969e0bdf5cde04a165b847144756b28495788 · Note
• http://openwall.com/lists/oss-security/2020/03/09/1 · Note