jenkinsci/cas-plugin · Security
Open redirect vulnerability in Jenkins CAS Plugin
- GHSA ID
- GHSA-2vvr-5757-qp87
- CVE ID
- CVE-2021-21673
- Severity
- medium
- Published
- Updated
- CVSS
- 6.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- CVSS v3
- 6.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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.
CWEs
- CWE-601 · URL Redirection to Untrusted Site ('Open Redirect')
References
- https://nvd.nist.gov/vuln/detail/CVE-2021-21673 ↗
- https://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2387 ↗
- http://www.openwall.com/lists/oss-security/2021/06/30/1 ↗
- https://github.com/jenkinsci/cas-plugin/commit/8ac536a953156160dbabb61bdb3b9bc75c3d0ef9 ↗
- https://github.com/advisories/GHSA-2vvr-5757-qp87 ↗