CVE-2021-39933 — Regex Denial of Service in Gitlab

CWE-1333 — Regex Denial of Service5 documents5 sources
Severity
6.5MEDIUMNVD
EPSS
0.2%
top 59.31%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
GitlabDebian GitlabGitlab CE
Timeline
PublishedDec 13
Latest updateDec 14

Description

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

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 2.8 | Impact: 3.6

Affected Packages5 packages

▶NVDgitlab/gitlab12.10.0 — 14.3.6+2
▶debiandebian/gitlab< gitlab 15.10.8+ds1-2 (sid)
▶CVEListV5gitlab/gitlab>=12.10, <14.3.6, >=14.4, <14.4.4, >=14.5, <14.5.2+2
▶gitlabgitlab/gitlab

🔴Vulnerability Details

2
GHSA
GHSA-26gq-p245-cq98: An issue has been discovered in GitLab CE/EE affecting all versions starting from 12↗2021-12-14
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OSV
CVE-2021-39933: An issue has been discovered in GitLab CE/EE affecting all versions starting from 12↗2021-12-13
▶

📋Vendor Advisories

2
GitLab
CVE-2021-39933: 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,↗2021-12-13
▶
Debian
CVE-2021-39933: gitlab - An issue has been discovered in GitLab CE/EE affecting all versions starting fro...↗2021
▶