vulnerability
MediaWiki: Incorrect Authorization (CVE-2020-26121)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:N/I:P/A:N) | Sep 27, 2020 | Oct 8, 2020 | Nov 8, 2023 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:P/A:N)
Published
Sep 27, 2020
Added
Oct 8, 2020
Modified
Nov 8, 2023
Description
An issue was discovered in the FileImporter extension for MediaWiki before 1.34.4. An attacker can import a file even when the target page is protected against "page creation" and the attacker should not be able to create it. This occurs because of a mishandled distinction between an upload restriction and a create restriction. An attacker cannot leverage this to overwrite anything, but can leverage this to force a wiki to have a page with a disallowed title.
Solution
mediawiki-upgrade-1_34_4
References
- CVE-2020-26121
- https://attackerkb.com/topics/CVE-2020-26121
- URL-https://commons.wikimedia.org/w/index.php?oldid=454609892#File:Wiki.png
- URL-https://gerrit.wikimedia.org/r/q/Ib852a96afc4dca10516d0510e69c10f9892b351b
- URL-https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6/
- URL-https://phabricator.wikimedia.org/T262628
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