PT-2021-14685 · Jenkins · Jenkins Config File Provider Plugin+1

Published 2021-04-21 · Updated 2023-10-25 · CVE-2021-21642

Positive Technologies (AI Summary)

CVSS v3.1

8.1

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Jenkins Config File Provider Plugin versions 3.7.0 and earlier

Description The issue allows attackers with the ability to define Maven configuration files to have Jenkins parse a crafted configuration file that uses external entities for extraction of secrets from the Jenkins controller or server-side request forgery. This is due to the plugin not configuring its XML parser to prevent XML external entity (XXE) attacks.

Recommendations For Jenkins Config File Provider Plugin versions 3.7.0 and earlier, update to version 3.7.1 or later, which disables external entity resolution for its XML parser.

Fix

XXE

Weakness Enumeration

CWE-611

Related Identifiers

CVE-2021-21642

GHSA-Q7XG-HH3Q-HC68

RHSA-2021:2122

RHSA-2021:2431

RHSA-2021:2517

Affected Products

Jenkins

Jenkins Config File Provider Plugin

References · 8

• https://jenkins.io/security/advisory/2021-04-21/#SECURITY-2204 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-21642 · Security Note
• https://osv.dev/vulnerability/GHSA-q7xg-hh3q-hc68 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-21642 · Vendor Advisory
• https://github.com/jenkinsci/config-file-provider-plugin · Note
• https://github.com/jenkinsci/config-file-provider-plugin/commit/5f845bc015be769e595088bab11ec36c767671e1 · Note
• https://t.me/cvenotify/13623 · Telegram Post
• http://openwall.com/lists/oss-security/2021/04/21/2 · Note