medium6.1
CVE-2021-21673
Open redirect vulnerability in Jenkins CAS Plugin
Impact
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
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| maven | org.jenkins-ci.plugins:cas-plugin | <= 1.6.0 | 1.6.1 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Jenkins | Cas | through 1.6.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- http://www.openwall.com/lists/oss-security/2021/06/30/1
- https://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2387
- https://github.com/advisories/GHSA-2vvr-5757-qp87
- https://nvd.nist.gov/vuln/detail/CVE-2021-21673
- https://github.com/jenkinsci/cas-plugin/commit/8ac536a953156160dbabb61bdb3b9bc75c3d0ef9