CVE-2021-39881

Severity Score

3.5

*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 CE/EE since version 7.7, the application may let a malicious user create an OAuth client application with arbitrary scope names which may allow the malicious user to trick unsuspecting users to authorize the malicious client application using the spoofed scope name and description.

En todas las versiones de GitLab CE/EE desde la versión 7.7, la aplicación puede permitir a un usuario malicioso crear una aplicación cliente OAuth con nombres de ámbito arbitrarios que pueden permitir al usuario malicioso engañar a usuarios desprevenidos para que autoricen la aplicación cliente maliciosa usando el nombre de ámbito y descripción falsos

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

Low

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

CWE

CAPEC

References (2)

URL	Tag	Source
https://gitlab.com/gitlab-org/gitlab/-/issues/26695	Broken Link

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39881.json	2021-10-09

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"				>= 7.7.0 < 14.1.7 Search vendor "Gitlab" for product "Gitlab" and version " >= 7.7.0 < 14.1.7"		community		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 7.7.0 < 14.1.7 Search vendor "Gitlab" for product "Gitlab" and version " >= 7.7.0 < 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"		community		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"		community		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