Vulnerability · Published Jan 13, 2021 · Assigned by jenkins
CVE-2021-21607
Medium 6.5
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 1.5% (higher than 74% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.5Medium
Exploit odds (30 days)1.5%top 26.3% 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 limit sizes provided as query parameters to graph-rendering URLs, allowing attackers to request crafted URLs that use all available memory in Jenkins, potentially leading to out of memory errors.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | jenkins | 2.275-r0 | ALPINE-CVE-2021-21607 |
| Alpine:v3.21 | jenkins | 2.275-r0 | ALPINE-CVE-2021-21607 |
| Alpine:v3.22 | jenkins | 2.275-r0 | ALPINE-CVE-2021-21607 |
| Alpine:v3.23 | jenkins | 2.275-r0 | ALPINE-CVE-2021-21607 |
| Alpine:v3.24 | jenkins | 2.275-r0 | ALPINE-CVE-2021-21607 |
| Maven | org.jenkins-ci.main:jenkins-core | 2.263.2 | GHSA-cxqw-vjcr-gp5g |
| Maven | org.jenkins-ci.main:jenkins-core | 2.275 | GHSA-cxqw-vjcr-gp5g |
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-2025 x_refsource_CONFIRM