Vulnerability · Published Jan 13, 2021 · Assigned by jenkins
CVE-2021-21609
Medium 5.3
In plain English
A medium-severity security flaw in Jenkins 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 1.3% (higher than 71% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.3Medium
Exploit odds (30 days)1.3%top 29.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not correctly match requested URLs to the list of always accessible paths, allowing attackers without Overall/Read permission to access some URLs as if they did have Overall/Read permission.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | jenkins | 2.275-r0 | ALPINE-CVE-2021-21609 |
| Alpine:v3.21 | jenkins | 2.275-r0 | ALPINE-CVE-2021-21609 |
| Alpine:v3.22 | jenkins | 2.275-r0 | ALPINE-CVE-2021-21609 |
| Alpine:v3.23 | jenkins | 2.275-r0 | ALPINE-CVE-2021-21609 |
| Alpine:v3.24 | jenkins | 2.275-r0 | ALPINE-CVE-2021-21609 |
| Maven | org.jenkins-ci.main:jenkins-core | 2.263.2 | GHSA-4625-q52w-39cx |
| Maven | org.jenkins-ci.main:jenkins-core | 2.275 | GHSA-4625-q52w-39cx |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Jenkins project | Jenkins | unspecified – through 2.274unspecified – through LTS 2.263.1 |
References
- https://www.jenkins.io/security/advisory/2021-01-13/#SECURITY-2047 x_refsource_CONFIRM