CVE-2021-39933

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

13/12/2021

Last modified:

08/08/2023

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.50 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

6.50

Severity 3.x

MEDIUM

Vector 2.0

AV:N/AC:L/Au:S/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 4.00 MEDIUM
Vector: AV:N/AC:L/Au:S/C:N/I:N/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): Single
Confidentiality (C): None
Integrity (I): None
Availability (A): Physical

Base Score 2.0

4.00

Severity 2.0

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:gitlab:gitlab:::::community:::*	12.10.0 (including)	14.3.6 (excluding)
cpe:2.3:a:gitlab:gitlab:::::enterprise:::*	12.10.0 (including)	14.3.6 (excluding)
cpe:2.3:a:gitlab:gitlab:::::community:::*	14.4.0 (including)	14.4.4 (excluding)
cpe:2.3:a:gitlab:gitlab:::::enterprise:::*	14.4.0 (including)	14.4.4 (excluding)
cpe:2.3:a:gitlab:gitlab:::::community:::*	14.5.0 (including)	14.5.2 (excluding)
cpe:2.3:a:gitlab:gitlab:::::enterprise:::*	14.5.0 (including)	14.5.2 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2021-39933

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools