Vulnerabilities
Misconfiguration
Runtime Security
Compliance
CVE Vulnerabilities

CVE-2021-42040

Loop with Unreachable Exit Condition ('Infinite Loop')

Published: Oct 06, 2021 | Modified: Oct 14, 2021
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
Ubuntu
MEDIUM
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2021-42040
CWEhttps://cwe.mitre.org/data/definitions/835.html

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.

Weakness

The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.

Affected Software

Name Vendor Start Version End Version
Mediawiki Mediawiki * 1.36.2 (including)
Mediawiki Ubuntu bionic *
Mediawiki Ubuntu hirsute *
Mediawiki Ubuntu impish *
Mediawiki Ubuntu kinetic *
Mediawiki Ubuntu lunar *
Mediawiki Ubuntu mantic *
Mediawiki Ubuntu trusty *
Mediawiki Ubuntu xenial *

References

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