Vulnerability · Published Jun 6, 2022 · Assigned by GitLab
CVE-2021-39947
Medium 5.3
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 59% of all known vulnerabilities).
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.9%top 41.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
In specific circumstances, trace file buffers in GitLab Runner versions up to 14.3.4, 14.4 to 14.4.2, and 14.5 to 14.5.2 would re-use the file descriptor 0 for multiple traces and mix the output of several jobs
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| GitLab | GitLab Runner | <14.3.4>=14.4, <14.4.2>=14.5, <14.5.2 |
References
- https://gitlab.com/gitlab-org/gitlab-runner/-/issues/28732 x_refsource_MISC
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39947.json x_refsource_CONFIRM