CVE-2015-8009 Information

Description

The MWOAuthDataStore::lookup_token function in Extension:OAuth for MediaWiki 1.25.x before 1.25.3 1.24.x before 1.24.4 and before 1.23.11 does not properly validate the signature when checking the authorization signature which allows remote registered Consumers to use another Consumer’s credentials by leveraging knowledge of the credentials.

CVSS Vector

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

Reference

http://www.openwall.com/lists/oss-security/2015/10/29/14 http://www.securitytracker.com/id/1034028 https://phabricator.wikimedia.org/T103023

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8