CVE-2021-39880

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 the apollo_upload_server Ruby gem in GitLab CE/EE all versions starting from 11.9 before 14.0.9, all versions starting from 14.1 before 14.1.4, and all versions starting from 14.2 before 14.2.2 allows an attacker to deny access to all users via specially crafted requests to the apollo_upload_server middleware.

Una vulnerabilidad de denegación de servicio en la gema apollo_upload_server Ruby en GitLab CE/EE todas las versiones a partir de la 11.9 antes de la 14.0.9, todas las versiones a partir de la 14.1 antes de la 14.1.4, y todas las versiones a partir de la 14.2 antes de la 14.2.2 permite a un atacante denegar el acceso a todos los usuarios a través de peticiones especialmente diseñadas al middleware apollo_upload_server

*Credits: Thanks 0xn3va 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

None

Availability

High

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
2021-10-05 CVE Published
2023-05-27 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/330561	Broken Link

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39880.json	2022-10-19

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"				> 11.9.0 < 14.0.9 Search vendor "Gitlab" for product "Gitlab" and version " > 11.9.0 < 14.0.9"		community		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 11.9.0 < 14.0.9 Search vendor "Gitlab" for product "Gitlab" and version " >= 11.9.0 < 14.0.9"		enterprise		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				> 14.1.0 < 14.1.4 Search vendor "Gitlab" for product "Gitlab" and version " > 14.1.0 < 14.1.4"		community		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 14.1.0 < 14.1.4 Search vendor "Gitlab" for product "Gitlab" and version " >= 14.1.0 < 14.1.4"		enterprise		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 14.2.0 < 14.2.2 Search vendor "Gitlab" for product "Gitlab" and version " >= 14.2.0 < 14.2.2"		community		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 14.2.0 < 14.2.2 Search vendor "Gitlab" for product "Gitlab" and version " >= 14.2.0 < 14.2.2"		enterprise		Affected