CVE-2023-3909 - Inefficient Regular Expression Complexity in GitLab

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MEDIUM

Inefficient Regular Expression Complexity in GitLab

Published Nov 6, 2023

6.5

MEDIUM

CVSS 3.1

EPSS 0.60%

Description

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.

Affected products

Vendor GitLab Product GitLab Default
unaffected
- Version
  12.3
  Status
  affected
  Constraints
  <16.3.6
- Version
  16.4
  Status
  affected
  Constraints
  <16.4.2
- Version
  16.5
  Status
  affected
  Constraints
  <16.5.1

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

GitLab

unaffected

Version	Status	Constraints
12.3	affected	<16.3.6
16.4	affected	<16.4.2
16.5	affected	<16.5.1

Remediation

Vendor solution

Upgrade to version 16.5.1, 16.4.2, 16.3.6

Weaknesses (1)

CWE-1333

References (3)

https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-44535
Advisory
https://gitlab.com/gitlab-org/gitlab/-/issues/418763
issue-trackingpermissions-requiredBroken Link
https://hackerone.com/reports/2050269
technical-descriptionexploitpermissions-requiredPermissions Required

Link	Providers	Tags
https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-44535		Advisory
https://gitlab.com/gitlab-org/gitlab/-/issues/418763		issue-trackingpermissions-requiredBroken Link
https://hackerone.com/reports/2050269		technical-descriptionexploitpermissions-requiredPermissions Required