CVE-2021-21684
UNKNOWN
Published 2021-10-06T22:10:14
Actions:
Expert Analysis
Professional remediation guidance
Get tailored security recommendations from our analyst team for CVE-2021-21684. We'll provide specific mitigation strategies based on your environment and risk profile.
No CVSS data available
Description
Jenkins Git Plugin 4.8.2 and earlier does not escape the Git SHA-1 checksum parameters provided to commit notifications when displaying them in a build cause, resulting in a stored cross-site scripting (XSS) vulnerability.
Available Exploits
No exploits available for this CVE.
Related News
No news articles found for this CVE.
Affected Products
Affected Versions:
GitHub Security Advisories
Community-driven vulnerability intelligence from GitHub
Advisory Details
Jenkins Git Plugin 4.8.2 and earlier does not escape the Git SHA-1 checksum parameters provided to commit notifications when displaying them in a build cause.
This results in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to submit crafted commit notifications to the `/git/notifyCommit` endpoint.
Jenkins Git Plugin 4.8.3 rejects Git SHA-1 checksum parameters that do not match the expected format. Existing values are sanitized when displayed on the UI.
This vulnerability is only exploitable in Jenkins 2.314 and earlier, LTS 2.303.1 and earlier. See the [LTS upgrade guide](https://www.jenkins.io/doc/upgrade-guide/2.303/#SECURITY-2452).
Affected Packages
Maven
org.jenkins-ci.plugins:git
ECOSYSTEM:
≥0
<4.8.3
CVSS Scoring
CVSS Score
5.0
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
References
Advisory provided by GitHub Security Advisory Database. Published: May 24, 2022, Modified: October 27, 2023
References
Published: 2021-10-06T22:10:14
Last Modified: 2024-08-03T18:23:28.621Z
Copied to clipboard!