CVE-2023-3424

Inefficient Regular Expression Complexity in GitLab

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

An issue has been discovered in GitLab CE/EE affecting all versions starting from 10.3 before 15.11.10, all versions starting from 16.0 before 16.0.6, all versions starting from 16.1 before 16.1.1. A Regular Expression Denial of Service was possible via sending crafted payloads to the preview_markdown endpoint.

*Credits: Thanks [ryhmnlfj](https://hackerone.com/ryhmnlfj) for reporting this vulnerability through our HackerOne bug bounty program

CVSS Scores

NISTv3.1 7.5

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2023-06-27 CVE Reserved
2023-07-13 CVE Published
2024-08-14 EPSS Updated
2024-10-30 CVE Updated
2024-10-30 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-400: Uncontrolled Resource Consumption
CWE-1333: Inefficient Regular Expression Complexity

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC
https://hackerone.com/reports/1960970	2024-10-30

URL	Date	SRC

URL	Date	SRC
https://gitlab.com/gitlab-org/gitlab/-/issues/409802	2023-07-20

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 10.3.0 < 15.11.10 Search vendor "Gitlab" for product "Gitlab" and version " >= 10.3.0 < 15.11.10"		community		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 10.3.0 < 15.11.10 Search vendor "Gitlab" for product "Gitlab" and version " >= 10.3.0 < 15.11.10"		enterprise		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 16.0.0 < 16.0.6 Search vendor "Gitlab" for product "Gitlab" and version " >= 16.0.0 < 16.0.6"		community		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 16.0.0 < 16.0.6 Search vendor "Gitlab" for product "Gitlab" and version " >= 16.0.0 < 16.0.6"		enterprise		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 16.1.0 < 16.1.1 Search vendor "Gitlab" for product "Gitlab" and version " >= 16.1.0 < 16.1.1"		community		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 16.1.0 < 16.1.1 Search vendor "Gitlab" for product "Gitlab" and version " >= 16.1.0 < 16.1.1"		enterprise		Affected