CVE-2021-21673
MEDIUM6.1EPSS 0.08%Open redirect vulnerability in Jenkins CAS Plugin
Published: 5/24/2022Modified: 2/16/2024
Also known as:GHSA-2vvr-5757-qp87
Description
Jenkins CAS Plugin 1.6.0 and earlier improperly determines that a redirect URL after login is legitimately pointing to Jenkins. This allows attackers to perform phishing attacks by having users go to a Jenkins URL that will forward them to a different site after successful authentication. Jenkins CAS Plugin 1.6.1 only redirects to relative (Jenkins) URLs.
Affected packages (1)
- Maven/org.jenkins-ci.plugins:cas-pluginfrom 0, < 1.6.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
References (5)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2021-21673
- PATCHhttps://github.com/jenkinsci/cas-plugin
- WEBhttps://github.com/jenkinsci/cas-plugin/commit/8ac536a953156160dbabb61bdb3b9bc75c3d0ef9
- WEBhttps://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2387
- WEBhttp://www.openwall.com/lists/oss-security/2021/06/30/1