CVE-2019-15150 Information

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.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Reference

http://packetstormsecurity.com/files/154140/MediaWiki-OAuth2-Client-0.3-Cross-Site-Request-Forgery.html http://seclists.org/fulldisclosure/2019/Aug/25 http://www.openwall.com/lists/oss-security/2019/08/19/1 https://github.com/Schine/MW-OAuth2Client/commit/6a4fe4500ddd72ad4e826d9d63b2d69512bd10d1 https://github.com/Schine/MW-OAuth2Client/releases/tag/v0.4 https://seclists.org/bugtraq/2019/Aug/32

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8