CVE Vulnerabilities

CVE-2021-39917

Incorrect Comparison

Published: Dec 13, 2021 | Modified: Dec 16, 2021
CVSS 3.x
6.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
4 MEDIUM
AV:N/AC:L/Au:S/C:N/I:N/A:P
RedHat/V2
RedHat/V3
Ubuntu
LOW

An issue has been discovered in GitLab CE/EE affecting all versions starting from 12.9 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 related to quick actions features was susceptible to catastrophic backtracking that could cause a DOS attack.

Weakness

The product compares two entities in a security-relevant context, but the comparison is incorrect, which may lead to resultant weaknesses.

Affected Software

Name Vendor Start Version End Version
Gitlab Gitlab 12.9.0 (including) 14.3.6 (excluding)
Gitlab Gitlab 14.4.0 (including) 14.4.4 (excluding)
Gitlab Gitlab 14.5.0 (including) 14.5.2 (excluding)
Gitlab Ubuntu esm-apps/xenial *
Gitlab Ubuntu trusty *
Gitlab Ubuntu xenial *

Extended Description

This Pillar covers several possibilities:

References