// For flags

CVE-2023-3909

Inefficient Regular Expression Complexity in GitLab

Severity Score

6.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

An issue has been discovered in GitLab CE/EE affecting all versions starting from 12.3 before 16.3.6, all versions starting from 16.4 before 16.4.2, all versions starting from 16.5 before 16.5.1. A Regular Expression Denial of Service was possible by adding a large string in timeout input in gitlab-ci.yml file.

Se ha descubierto un problema en GitLab CE/EE que afecta a todas las versiones desde 12.3 anteriores a 16.3.6, todas las versiones desde 16.4 anteriores a 16.4.2, todas las versiones desde 16.5 anteriores a 16.5.1. Fue posible una Regular Expression Denial of Service agregando una cadena grande en la entrada de tiempo de espera en el archivo gitlab-ci.yml.

*Credits: Thanks [akadrian](https://hackerone.com/akadrian) 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
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2023-07-25 CVE Reserved
  • 2023-11-06 CVE Published
  • 2024-10-03 CVE Updated
  • 2024-11-12 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-400: Uncontrolled Resource Consumption
  • CWE-1333: Inefficient Regular Expression Complexity
CAPEC
References (0)
URL Tag Source
URL Date SRC
URL Date SRC
URL Date SRC
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"
 >= 12.3.0 < 16.3.6
Search vendor "Gitlab" for product "Gitlab" and version " >= 12.3.0 < 16.3.6"
community
Affected
Gitlab
Search vendor "Gitlab"
 Gitlab
Search vendor "Gitlab" for product "Gitlab"
 >= 12.3.0 < 16.3.6
Search vendor "Gitlab" for product "Gitlab" and version " >= 12.3.0 < 16.3.6"
enterprise
Affected
Gitlab
Search vendor "Gitlab"
 Gitlab
Search vendor "Gitlab" for product "Gitlab"
 >= 16.4.0 < 16.4.2
Search vendor "Gitlab" for product "Gitlab" and version " >= 16.4.0 < 16.4.2"
community
Affected
Gitlab
Search vendor "Gitlab"
 Gitlab
Search vendor "Gitlab" for product "Gitlab"
 >= 16.4.0 < 16.4.2
Search vendor "Gitlab" for product "Gitlab" and version " >= 16.4.0 < 16.4.2"
enterprise
Affected
Gitlab
Search vendor "Gitlab"
 Gitlab
Search vendor "Gitlab" for product "Gitlab"
 16.5.0
Search vendor "Gitlab" for product "Gitlab" and version "16.5.0"
community
Affected
Gitlab
Search vendor "Gitlab"
 Gitlab
Search vendor "Gitlab" for product "Gitlab"
 16.5.0
Search vendor "Gitlab" for product "Gitlab" and version "16.5.0"
enterprise
Affected