// For flags

CVE-2021-39933

 

Severity Score

6.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

An issue has been discovered in GitLab CE/EE affecting all versions starting from 12.10 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2. A regular expression used for handling user input (notes, comments, etc) was susceptible to catastrophic backtracking that could cause a DOS attack.

Se ha detectado un problema en GitLab CE/EE afectando a todas las versiones a partir de 12.10 anteriores a 14.3.6, a todas las versiones a partir de 14.4 anteriores a 14.4.4, a todas las versiones a partir de 14.5 anteriores a 14.5.2. Una expresión regular usada para el manejo de la entrada del usuario (notas, comentarios, etc) era susceptible de un retroceso catastrófico que podía causar un ataque DOS

*Credits: Thanks @hashkitten, 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
  • 2021-12-13 CVE Published
  • 2023-10-30 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-1333: Inefficient Regular Expression Complexity
CAPEC
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"
>= 12.10.0 < 14.3.6
Search vendor "Gitlab" for product "Gitlab" and version " >= 12.10.0 < 14.3.6"
community
Affected
Gitlab
Search vendor "Gitlab"
Gitlab
Search vendor "Gitlab" for product "Gitlab"
>= 12.10.0 < 14.3.6
Search vendor "Gitlab" for product "Gitlab" and version " >= 12.10.0 < 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"
community
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"
community
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