CVE-2021-39943

Severity Score

4.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An authorization logic error in the External Status Check API in GitLab EE affecting all versions starting from 14.1 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2, allowed a user to update the status of the check via an API call

Un error de lógica de autorización en la API de comprobación de estado externo en GitLab EE afectando a todas las versiones a partir de la 14.1 anteriores a 14.3.6, a todas las versiones a partir de la 14.4 anteriores a 14.4.4, a todas las versiones a partir de la 14.5 anteriores a 14.5.2, permitía a un usuario actualizar el estado de la comprobación por medio de una llamada a la API

*Credits: Thanks @joaxcar 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

None

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

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
2022-02-09 CVE Published
2023-12-27 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-863: Incorrect Authorization

CAPEC

References (2)

URL	Tag	Source
https://gitlab.com/gitlab-org/gitlab/-/issues/343604	Broken Link

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39943.json	2022-02-16

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 < 14.3.6 Search vendor "Gitlab" for product "Gitlab" and version " >= 14.1.0 < 14.3.6"		enterprise		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 14.4.0 < 14.4.4 Search vendor "Gitlab" for product "Gitlab" and version " >= 14.4.0 < 14.4.4"		enterprise		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 14.5.0 < 14.5.2 Search vendor "Gitlab" for product "Gitlab" and version " >= 14.5.0 < 14.5.2"		enterprise		Affected