Description
In the OAuth2 Client extension before 0.4 for MediaWiki, a CSRF vulnerability exists due to the OAuth2 state parameter not being checked in the callback function.
References
- https://github.com/Schine/MW-OAuth2Client/commit/6a4fe4500ddd72ad4e826d9d63b2d69512bd10d1
- https://github.com/Schine/MW-OAuth2Client/releases/tag/v0.4
- [oss-security] 20190818 [CVE-2019-15150] CSRF in MediaWiki extension OAuth2 Client 0.3 mailing-list
- 20190819 [CVE-2019-15150] CSRF in MediaWiki extension OAuth2 Client 0.3 mailing-list
- http://packetstormsecurity.com/files/154140/MediaWiki-OAuth2-Client-0.3-Cross-Site-Request-Forgery.html
- 20190825 [CVE-2019-15150] CSRF in MediaWiki extension OAuth2 Client 0.3 mailing-list