Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS0ydnZyLTU3NTctcXA4N84AAo_m

Open redirect vulnerability in Jenkins CAS Plugin

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.

Permalink: https://github.com/advisories/GHSA-2vvr-5757-qp87
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS0ydnZyLTU3NTctcXA4N84AAo_m
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: almost 2 years ago
Updated: 5 months ago

CVSS Score: 6.1
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Identifiers: GHSA-2vvr-5757-qp87, CVE-2021-21673
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

Repository: https://github.com/jenkinsci/cas-plugin
Blast Radius: 1.0

Affected Packages