Link Following Affecting jenkins package, versions <0:2.303.3.1637597018-1.el8


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.21% (60th percentile)

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  • Snyk IDSNYK-RHEL8-JENKINS-4399054
  • published26 Mar 2023
  • disclosed4 Nov 2021

Introduced: 4 Nov 2021

CVE-2021-21686  (opens in a new tab)
CWE-59  (opens in a new tab)

How to fix?

Upgrade RHEL:8 jenkins to version 0:2.303.3.1637597018-1.el8 or higher.
This issue was patched in RHSA-2021:4801.

NVD Description

Note: Versions mentioned in the description apply only to the upstream jenkins package and not the jenkins package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

File path filters in the agent-to-controller security subsystem of Jenkins 2.318 and earlier, LTS 2.303.2 and earlier do not canonicalize paths, allowing operations to follow symbolic links to outside allowed directories.

CVSS Scores

version 3.1