The CentralAuth extension for MediaWiki 1.19.x before 1.19.8, 1.20.x before 1.20.7, and 1.21.x before 1.21.2 caches a valid CentralAuthUser object in the centralauth_User cookie even when a user has not successfully logged in, which allows remote attackers to bypass authentication without a password.
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Centralauth_extension | Brion_vibber | - (including) | - (including) |
| Mediawiki | Mediawiki | 1.19 (including) | 1.19 (including) |
| Mediawiki | Mediawiki | 1.19-beta_1 (including) | 1.19-beta_1 (including) |
| Mediawiki | Mediawiki | 1.19-beta_2 (including) | 1.19-beta_2 (including) |
| Mediawiki | Mediawiki | 1.19.0 (including) | 1.19.0 (including) |
| Mediawiki | Mediawiki | 1.19.1 (including) | 1.19.1 (including) |
| Mediawiki | Mediawiki | 1.19.2 (including) | 1.19.2 (including) |
| Mediawiki | Mediawiki | 1.19.3 (including) | 1.19.3 (including) |
| Mediawiki | Mediawiki | 1.19.4 (including) | 1.19.4 (including) |
| Mediawiki | Mediawiki | 1.19.5 (including) | 1.19.5 (including) |
| Mediawiki | Mediawiki | 1.19.6 (including) | 1.19.6 (including) |
| Mediawiki | Mediawiki | 1.19.7 (including) | 1.19.7 (including) |
| Mediawiki | Mediawiki | 1.20 (including) | 1.20 (including) |
| Mediawiki | Mediawiki | 1.20.1 (including) | 1.20.1 (including) |
| Mediawiki | Mediawiki | 1.20.2 (including) | 1.20.2 (including) |
| Mediawiki | Mediawiki | 1.20.3 (including) | 1.20.3 (including) |
| Mediawiki | Mediawiki | 1.20.4 (including) | 1.20.4 (including) |
| Mediawiki | Mediawiki | 1.20.5 (including) | 1.20.5 (including) |
| Mediawiki | Mediawiki | 1.20.6 (including) | 1.20.6 (including) |
| Mediawiki | Mediawiki | 1.21 (including) | 1.21 (including) |
| Mediawiki | Mediawiki | 1.21.1 (including) | 1.21.1 (including) |