Vulnerability · Published Dec 13, 2021 · Assigned by GitLab
CVE-2021-39939
Medium 6.5
In plain English
A medium-severity security flaw in GitLab Runner from GitLab. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 61% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.9%top 39.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
An uncontrolled resource consumption vulnerability in GitLab Runner affecting all versions starting from 13.7 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2, allows an attacker triggering a job with a specially crafted docker image to exhaust resources on runner manager
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| GitLab | GitLab Runner | >=13.7, <14.3.6>=14.4, <14.4.4>=14.5, <14.5.2 |
References
- https://gitlab.com/gitlab-org/gitlab-runner/-/issues/28630 x_refsource_MISC
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39939.json x_refsource_CONFIRM