Vulnerability · Published Jan 13, 2021 · Assigned by jenkins
CVE-2021-21606
Medium 4.3
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 1.2% (higher than 69% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)4.3Medium
Exploit odds (30 days)1.2%top 31.0% 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 improperly validates the format of a provided fingerprint ID when checking for its existence allowing an attacker to check for the existence of XML files with a short path.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | jenkins | 2.275-r0 | ALPINE-CVE-2021-21606 |
| Alpine:v3.21 | jenkins | 2.275-r0 | ALPINE-CVE-2021-21606 |
| Alpine:v3.22 | jenkins | 2.275-r0 | ALPINE-CVE-2021-21606 |
| Alpine:v3.23 | jenkins | 2.275-r0 | ALPINE-CVE-2021-21606 |
| Alpine:v3.24 | jenkins | 2.275-r0 | ALPINE-CVE-2021-21606 |
| Maven | org.jenkins-ci.main:jenkins-core | 2.263.2 | GHSA-f585-9fw3-rj2m |
| Maven | org.jenkins-ci.main:jenkins-core | 2.275 | GHSA-f585-9fw3-rj2m |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Jenkins project | Jenkins | 2.242 – before unspecifiedunspecified – through 2.274unspecified – through LTS 2.263.1 |
References
- https://www.jenkins.io/security/advisory/2021-01-13/#SECURITY-2023 x_refsource_CONFIRM