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Security Advisories: GSA_kwCzR0hTQS13djYzLWd3cjktNWM1Nc4AAnOM

Stored XSS vulnerability in Jenkins button labels

Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not escape button labels in the Jenkins UI.

This results in a cross-site scripting vulnerability exploitable by attackers with the ability to control button labels. An example of buttons with a user-controlled label are the buttons of the Pipeline input step.

Jenkins 2.275, LTS 2.263.2 escapes button labels in the Jenkins UI.

Permalink: https://github.com/advisories/GHSA-wv63-gwr9-5c55
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS13djYzLWd3cjktNWM1Nc4AAnOM
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: almost 2 years ago
Updated: 4 months ago

CVSS Score: 5.4
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Identifiers: GHSA-wv63-gwr9-5c55, CVE-2021-21608
References:

• https://nvd.nist.gov/vuln/detail/CVE-2021-21608
• https://www.jenkins.io/security/advisory/2021-01-13/#SECURITY-2035
• https://github.com/jenkinsci/jenkins/commit/8c451b08886561a914ef0c30cbb9d40ea33a9bbe
• https://github.com/advisories/GHSA-wv63-gwr9-5c55

Repository: https://github.com/jenkinsci/jenkins
Blast Radius: 1.0

Affected Packages