MediaWiki before 1.35.1 blocks legitimate attempts to hide log entries in some situations. If one sets MediaWiki:Mainpage to Special:MyLanguage/Main Page, visits a log entry on Special:Log, and toggles the Change visibility of selected log entries checkbox (or a tags checkbox) next to it, there is a redirection to the main pages action=historysubmit (instead of the desired behavior in which a revision-deletion form appears).
Weakness
The code contains a control flow path that does not reflect the algorithm that the path is intended to implement, leading to incorrect behavior any time this path is navigated.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Mediawiki | Mediawiki | * | 1.35.1 (excluding) |
| Mediawiki | Ubuntu | bionic | * |
| Mediawiki | Ubuntu | focal | * |
| Mediawiki | Ubuntu | groovy | * |
| Mediawiki | Ubuntu | hirsute | * |
| Mediawiki | Ubuntu | impish | * |
| Mediawiki | Ubuntu | kinetic | * |
| Mediawiki | Ubuntu | lunar | * |
| Mediawiki | Ubuntu | mantic | * |
| Mediawiki | Ubuntu | oracular | * |
| Mediawiki | Ubuntu | plucky | * |
| Mediawiki | Ubuntu | trusty | * |
| Mediawiki | Ubuntu | upstream | * |
References
- https://lists.debian.org/debian-lts-announce/2020/12/msg00034.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STT5Z4A3BCXVH3WIPICWU2FP4IPIMUPC/
- https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html
- https://phabricator.wikimedia.org/T205908
- https://www.debian.org/security/2020/dsa-4816
- https://lists.debian.org/debian-lts-announce/2020/12/msg00034.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STT5Z4A3BCXVH3WIPICWU2FP4IPIMUPC/
- https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html
- https://phabricator.wikimedia.org/T205908
- https://www.debian.org/security/2020/dsa-4816