Description
Mediawiki v1.40.0 does not validate namespaces used in XML files. Therefore, if the instance administrator allows XML file uploads, a remote attacker with a low-privileged user account can use this exploit to become an administrator by sending a malicious link to the instance administrator.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
MediaWiki MediaWiki
Default version status: unaffected
1.40.0affected
References
- https://fluidattacks.com/advisories/blondie/ ↗
- https://www.mediawiki.org/wiki/MediaWiki/ ↗
- https://www.debian.org/security/2023/dsa-5520 ↗
- https://lists.debian.org/debian-lts-announce/2023/11/msg00027.html ↗
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FU2FGUXXK6TMV6R52VRECLC6XCSQQISY/ ↗