Cross-site Scripting (XSS) Affecting jenkins package, versions <0:2.263.3.1612434510-1.el8


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.05% (24th percentile)

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  • Snyk IDSNYK-RHEL8-JENKINS-4399188
  • published26 Mar 2023
  • disclosed13 Jan 2021

Introduced: 13 Jan 2021

CVE-2021-21608  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade RHEL:8 jenkins to version 0:2.263.3.1612434510-1.el8 or higher.
This issue was patched in RHSA-2021:0423.

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.

Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not escape button labels in the Jenkins UI, resulting in a cross-site scripting (XSS) vulnerability exploitable by attackers with the ability to control button labels.

CVSS Scores

version 3.1