PT-2021-14651 · Jenkins · Jenkins

Jesse Glick + 1 · Published 2021-01-13 · Updated 2024-03-06 · CVE-2021-21608

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Jenkins versions 2.274 and earlier Jenkins LTS versions 2.263.1 and earlier

Description The issue results from the failure to escape button labels in the Jenkins UI, leading to a cross-site scripting (XSS) vulnerability. This vulnerability can be exploited by attackers who have the ability to control button labels. For example, buttons with user-controlled labels, such as those in the Pipeline input step, can be used to exploit this issue.

Recommendations For Jenkins versions 2.274 and earlier, update to version 2.275 or later to resolve the issue. For Jenkins LTS versions 2.263.1 and earlier, update to version 2.263.2 or later to resolve the issue.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

BIT-JENKINS-2021-21608

CVE-2021-21608

GHSA-WV63-GWR9-5C55

RHSA-2021:0423

RHSA-2021:0429

RHSA-2021:0637

Affected Products

Jenkins

References · 10

• https://jenkins.io/security/advisory/2021-01-13/#SECURITY-2035 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-wv63-gwr9-5c55 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-21608 · Security Note
• https://osv.dev/vulnerability/CVE-2021-21608 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-jenkins-2021-21608 · Vendor Advisory
• https://github.com/jenkinsci/jenkins · Note
• https://github.com/jenkinsci/jenkins/commit/8c451b08886561a914ef0c30cbb9d40ea33a9bbe · Note
• https://t.me/cibsecurity/22083 · Telegram Post
• https://t.me/cvenotify/60423 · Telegram Post
• https://t.me/cvenotify/8486 · Telegram Post