An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. Users can bypass intended restrictions on deleting pages in certain "fast double move" situations. MovePage::isValidMoveTarget() uses FOR UPDATE, but it's only called if Title::getArticleID() returns non-zero with no special flags. Next, MovePage::moveToInternal() will delete the page if getArticleID(READ_LATEST) is non-zero. Therefore, if the page is missing in the replica DB, isValidMove() will return true, and then moveToInternal() will unconditionally delete the page if it can be found in the master.
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Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: mitre
Published: 2021-04-09T06:12:55
Updated: 2024-08-03T22:24:59.632Z
Reserved: 2021-04-06T00:00:00
Link: CVE-2021-30159
Vulnrichment
No data.
NVD
Status : Modified
Published: 2021-04-09T07:15:16.277
Modified: 2023-11-07T03:32:59.850
Link: CVE-2021-30159
Redhat