What is CVE-2021-39947?

CVE-2021-39947 is a medium-severity vulnerability in Gitlab Runner. CVSS score: 5.3/10. Published 2022-06-06.

How severe is CVE-2021-39947?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Gitlab Runner

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

EPSS: 0.008 (52.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Gitlab Runner — versions <14.3.4, >=14.4, <14.4.2, >=14.5, <14.5.2
Gitlab Gitlab_runner

References

cve@gitlab.com (x_refsource_MISC, Broken Link)
cve@gitlab.com (x_refsource_CONFIRM, Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2021-39947?: CVE-2021-39947 is a medium-severity vulnerability in Gitlab Runner. CVSS score: 5.3/10. Published 2022-06-06.
How severe is CVE-2021-39947?: Medium severity. CVSS v3 base score is 5.3 out of 10.