PT-2020-15558 · Jenkins · Jenkins Cas Plugin+1

Daniel Beck · Published 2020-12-03 · Updated 2023-10-25 · CVE-2020-2324

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Jenkins CVS Plugin versions 2.16 and earlier

Description The issue allows attackers who can control an agent process to have Jenkins parse a crafted changelog file, using external entities for extraction of secrets from the Jenkins controller or server-side request forgery, due to the XML parser not being configured to prevent XML external entity (XXE) attacks.

Recommendations For Jenkins CVS Plugin versions 2.16 and earlier, update to version 2.17 or later, which disables external entity resolution for its XML parser.

Fix

XXE

Weakness Enumeration

CWE-611

Related Identifiers

CVE-2020-2324

GHSA-G9HG-X9C9-7XGR

Affected Products

Jenkins

Jenkins Cas Plugin

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2020-2324 · Security Note
• https://osv.dev/vulnerability/CVE-2020-2324 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-g9hg-x9c9-7xgr · Vendor Advisory
• https://github.com/jenkinsci/cvs-plugin · Note
• https://github.com/jenkinsci/cvs-plugin/commit/ff121443b282c8dbd6a5ee4841f152f78e4a5954 · Note
• https://t.me/cibsecurity/17090 · Telegram Post
• http://openwall.com/lists/oss-security/2020/12/03/2 · Note
• https://jenkins.io/security/advisory/2020-12-03/#SECURITY-2146 · Note
• https://t.me/cvenotify/6687 · Telegram Post