Vulnerability · Published Jun 30, 2021 · Assigned by jenkins
CVE-2021-21673
Medium 6.1
In plain English
A medium-severity security flaw in Jenkins CAS Plugin from Jenkins project. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.6% (higher than 76% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.1Medium
Exploit odds (30 days)1.6%top 24.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Jenkins CAS Plugin 1.6.0 and earlier improperly determines that a redirect URL after login is legitimately pointing to Jenkins, allowing attackers to perform phishing attacks.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | org.jenkins-ci.plugins:cas-plugin | 1.6.1 | GHSA-2vvr-5757-qp87 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Jenkins project | Jenkins CAS Plugin | unspecified – through 1.6.0 |
References
- https://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2387 x_refsource_CONFIRM
- [oss-security] 20210630 Multiple vulnerabilities in Jenkins and Jenkins plugins mailing-list, x_refsource_MLIST