Vulnerability · Published Dec 13, 2021 · Assigned by GitLab
CVE-2021-39933
Medium 4.3
In plain English
A medium-severity security flaw in GitLab from GitLab. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 74% of all known vulnerabilities).
Severity (CVSS 3.1)4.3Medium
Exploit odds (30 days)1.5%top 26.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
References
- https://gitlab.com/gitlab-org/gitlab/-/issues/340449 x_refsource_MISC
- https://hackerone.com/reports/1320077 x_refsource_MISC
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39933.json x_refsource_CONFIRM