CVE-2021-42040

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-42040
An issue was discovered in MediaWiki through 1.36.2. A parser function related to loop control allowed for an infinite loop (and php-fpm hang) within the Loops extension because egLoopsCountLimit is mishandled. This could lead to memory exhaustion.

7.5 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0 /10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References
Link Resource
https://gerrit.wikimedia.org/r/q/I0caf6f129f94612b5bcf406a171aa5ffedea1f80 Patch Vendor Advisory
https://phabricator.wikimedia.org/T287347 Patch Vendor Advisory
https://gerrit.wikimedia.org/r/q/I0caf6f129f94612b5bcf406a171aa5ffedea1f80 Patch Vendor Advisory
https://phabricator.wikimedia.org/T287347 Patch Vendor Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
History

21 Nov 2024, 06:27

Type Values Removed Values Added
References () https://gerrit.wikimedia.org/r/q/I0caf6f129f94612b5bcf406a171aa5ffedea1f80 - Patch, Vendor Advisory () https://gerrit.wikimedia.org/r/q/I0caf6f129f94612b5bcf406a171aa5ffedea1f80 - Patch, Vendor Advisory
References () https://phabricator.wikimedia.org/T287347 - Patch, Vendor Advisory () https://phabricator.wikimedia.org/T287347 - Patch, Vendor Advisory

14 Oct 2021, 18:52

Type Values Removed Values Added
References (MISC) https://phabricator.wikimedia.org/T287347 - (MISC) https://phabricator.wikimedia.org/T287347 - Patch, Vendor Advisory
References (MISC) https://gerrit.wikimedia.org/r/q/I0caf6f129f94612b5bcf406a171aa5ffedea1f80 - (MISC) https://gerrit.wikimedia.org/r/q/I0caf6f129f94612b5bcf406a171aa5ffedea1f80 - Patch, Vendor Advisory
CVSS v2 : unknown
v3 : unknown 		v2 : 5.0
v3 : 7.5
CWE CWE-835
CPE cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*

06 Oct 2021, 21:15

Type Values Removed Values Added
New CVE
Information

Published : 2021-10-06 21:15

Updated : 2024-11-21 06:27

NVD link : CVE-2021-42040

Mitre link : CVE-2021-42040

CVE.ORG link : CVE-2021-42040

JSON object : View

Products Affected

mediawiki

  • mediawiki
CWE
CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')