CVE-2021-39889

Severity Score

4.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In all versions of GitLab EE since version 14.1, due to an insecure direct object reference vulnerability, an endpoint may reveal the protected branch name to a malicious user who makes a crafted API call with the ID of the protected branch.

En todas las versiones de GitLab EE desde la versión 14.1, debido a una vulnerabilidad de referencia directa a objetos insegura, un endpoint puede revelar el nombre de la rama protegida a un usuario malintencionado que realice una llamada a la API diseñada con el ID de la rama protegida

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-08-23 CVE Reserved
2021-10-05 CVE Published
2023-08-22 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-639: Authorization Bypass Through User-Controlled Key

CAPEC

References (2)

URL	Tag	Source
https://gitlab.com/gitlab-org/gitlab/-/issues/338062	Broken Link

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39889.json	2022-05-03

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"				>= 14.1.0 < 14.1.7 Search vendor "Gitlab" for product "Gitlab" and version " >= 14.1.0 < 14.1.7"		enterprise		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 14.2.0 < 14.2.5 Search vendor "Gitlab" for product "Gitlab" and version " >= 14.2.0 < 14.2.5"		enterprise		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 14.3.0 < 14.3.1 Search vendor "Gitlab" for product "Gitlab" and version " >= 14.3.0 < 14.3.1"		enterprise		Affected