Rapid7 Vulnerability & Exploit Database

MediaWiki: Improper Input Validation (CVE-2020-35623)

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MediaWiki: Improper Input Validation (CVE-2020-35623)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:P/A:N)
Published
12/21/2020
Created
12/30/2020
Added
12/29/2020
Modified
08/05/2021

Description

An issue was discovered in the CasAuth extension for MediaWiki through 1.35.1. Due to improper username validation, it allowed user impersonation with trivial manipulations of certain characters within a given username. An ordinary user may be able to login as a "bureaucrat user" who has a similar username, as demonstrated by usernames that differ only in (1) bidirectional override symbols or (2) blank space.

Solution(s)

  • mediawiki-upgrade-latest

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