VulnerabilityModified
CVE-2021-39947
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
HIGH 7.5EPSS 0.84%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.84%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 0.84% probability · 56th percentile
- CISA KEV
- Not listed
- Affected
- gitlab/gitlab runner
- Source
- cve@gitlab.com
References
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39947.jsonPatch, Third Party Advisory
- https://gitlab.com/gitlab-org/gitlab-runner/-/issues/28732Broken Link
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39947.jsonPatch, Third Party Advisory
- https://gitlab.com/gitlab-org/gitlab-runner/-/issues/28732Broken Link
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.