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MediaWiki: Incorrect Authorization (CVE-2021-31552)

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MediaWiki: Incorrect Authorization (CVE-2021-31552)

Severity
6
CVSS
(AV:N/AC:L/Au:S/C:P/I:P/A:N)
Published
04/22/2021
Created
04/27/2021
Added
04/26/2021
Modified
07/15/2022

Description

An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. It incorrectly executed certain rules related to blocking accounts after account creation. Such rules would allow for user accounts to be created while blocking only the IP address used to create an account (and not the user account itself). Such rules could also be used by a nefarious, unprivileged user to catalog and enumerate any number of IP addresses related to these account creations.

Solution(s)

  • mediawiki-upgrade-latest

References

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