CVE-2021-39942

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A denial of service vulnerability in GitLab CE/EE affecting all versions starting from 12.0 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2, allows low-privileged users to bypass file size limits in the NPM package repository to potentially cause denial of service.

Una vulnerabilidad de denegación de servicio en GitLab CE/EE que afecta a todas las versiones a partir de la 12.0 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, permite a usuarios poco privilegiados omitir los límites de tamaño de los archivos en el repositorio de paquetes NPM para causar potencialmente una denegación de servicio

*Credits: Thanks @0xn3va for reporting this vulnerability through our HackerOne bug bounty program

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-08-23 CVE Reserved
2022-01-18 CVE Published
2023-09-09 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-400: Uncontrolled Resource Consumption

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39942.json	2022-01-25
https://gitlab.com/gitlab-org/gitlab/-/issues/297492	2022-01-25

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"				>= 12.0 < 14.3.6 Search vendor "Gitlab" for product "Gitlab" and version " >= 12.0 < 14.3.6"		community		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 12.0 < 14.3.6 Search vendor "Gitlab" for product "Gitlab" and version " >= 12.0 < 14.3.6"		enterprise		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 14.4 < 14.4.4 Search vendor "Gitlab" for product "Gitlab" and version " >= 14.4 < 14.4.4"		community		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 14.4 < 14.4.4 Search vendor "Gitlab" for product "Gitlab" and version " >= 14.4 < 14.4.4"		enterprise		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 14.5 < 14.5.2 Search vendor "Gitlab" for product "Gitlab" and version " >= 14.5 < 14.5.2"		community		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 14.5 < 14.5.2 Search vendor "Gitlab" for product "Gitlab" and version " >= 14.5 < 14.5.2"		enterprise		Affected