Cyber Resilience

CVE-2021-39933

Medium

Published: 13 December 2021

Published
13 December 2021
Modified
21 November 2024
KEV Added
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Patch
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CVSS Score v3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
EPSS Score 0.0019 40.6th percentile
Risk Priority 9 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-39933 is a medium-severity Inefficient Regular Expression Complexity (CWE-1333) vulnerability in Gitlab Gitlab. Its CVSS base score is 4.3 (Medium).

Operationally, ranked at the 40.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

An issue has been discovered in GitLab CE/EE affecting all versions starting from 12.10 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2. A regular expression used for handling user input (notes, comments,…

more

etc) was susceptible to catastrophic backtracking that could cause a DOS attack.

CWE(s)
CWE-1333

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

gitlab
gitlab
12.10.0 — 14.3.6 · 12.10.0 — 14.3.6 · 14.4.0 — 14.4.4

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References