CVE-2021-39927

Severity Score

4.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Server side request forgery protections in GitLab CE/EE versions between 8.4 and 14.4.4, between 14.5.0 and 14.5.2, and between 14.6.0 and 14.6.1 would fail to protect against attacks sending requests to localhost on port 80 or 443 if GitLab was configured to run on a port other than 80 or 443

Las protecciones contra la falsificación de solicitudes del lado del servidor en las versiones de GitLab CE/EE entre 8.4 y 14.4.4, entre 14.5.0 y 14.5.2, y entre 14.6.0 y 14.6.1 fallaban en la protección contra los ataques que enviaban solicitudes a localhost en el puerto 80 o 443 si GitLab estaba configurado para ejecutarse en un puerto distinto de 80 o 443

*Credits: This vulnerability has been discovered internally by the GitLab team

CVSS Scores

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

High

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

None

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
2022-01-18 CVE Published
2023-08-11 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-918: Server-Side Request Forgery (SSRF)

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-2021-39927.json	2022-09-03
https://gitlab.com/gitlab-org/gitlab/-/issues/340476	2022-09-03

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"				>= 8.4 <= 14.4.5 Search vendor "Gitlab" for product "Gitlab" and version " >= 8.4 <= 14.4.5"		community		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 8.4 <= 14.4.5 Search vendor "Gitlab" for product "Gitlab" and version " >= 8.4 <= 14.4.5"		enterprise		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 14.5.0 <= 14.5.3 Search vendor "Gitlab" for product "Gitlab" and version " >= 14.5.0 <= 14.5.3"		community		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 14.5.0 <= 14.5.3 Search vendor "Gitlab" for product "Gitlab" and version " >= 14.5.0 <= 14.5.3"		enterprise		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 14.6.0 <= 14.6.3 Search vendor "Gitlab" for product "Gitlab" and version " >= 14.6.0 <= 14.6.3"		community		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 14.6.0 <= 14.6.3 Search vendor "Gitlab" for product "Gitlab" and version " >= 14.6.0 <= 14.6.3"		enterprise		Affected