CVE-2021-39909

Severity Score

5.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Lack of email address ownership verification in the CODEOWNERS feature in all versions of GitLab EE starting from 11.3 before 14.2.6, all versions starting from 14.3 before 14.3.4, and all versions starting from 14.4 before 14.4.1 allows an attacker to bypass CODEOWNERS Merge Request approval requirement under rare circumstances

La falta de verificación de la propiedad de la dirección de correo electrónico en la función CODEOWNERS en todas las versiones de GitLab EE a partir de la 11.3 antes de la 14.2.6, en todas las versiones a partir de la 14.3 antes de la 14.3.4 y en todas las versiones a partir de la 14.4 antes de la 14.4.1 permite a un atacante eludir el requisito de aprobación de la solicitud de fusión CODEOWNERS en raras circunstancias

*Credits: Thanks vaib25vicky for reporting this vulnerability through our HackerOne bug bounty program

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

Single

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-08-23 CVE Reserved
2021-11-04 CVE Published
2023-09-21 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-347: Improper Verification of Cryptographic Signature

CAPEC

References (2)

URL	Tag	Source
https://gitlab.com/gitlab-org/gitlab/-/issues/335191	Broken Link

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39909.json	2022-10-06

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"				>= 11.3.0 < 14.2.6 Search vendor "Gitlab" for product "Gitlab" and version " >= 11.3.0 < 14.2.6"		enterprise		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 14.3.0 < 14.3.4 Search vendor "Gitlab" for product "Gitlab" and version " >= 14.3.0 < 14.3.4"		enterprise		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				14.4.0 Search vendor "Gitlab" for product "Gitlab" and version "14.4.0"		enterprise		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 11.2.0 < 14.3.4 Search vendor "Gitlab" for product "Gitlab" and version " >= 11.2.0 < 14.3.4"		enterprise		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 11.3.0 < 14.4.1 Search vendor "Gitlab" for product "Gitlab" and version " >= 11.3.0 < 14.4.1"		enterprise		Affected