CyberRota Analysis
AI-GeneratedThe WPMU DEV Dashboard plugin for WordPress is susceptible to an authentication bypass vulnerability that affects all versions up to 5.0.1, allowing unauthenticated attackers to exploit inconsistencies in HMAC message construction between two AJAX actions. This flaw enables attackers to gain unauthorized access as an administrator by manipulating the HMAC token, posing a critical risk to sites utilizing Hub SSO with administrator mappings. WordPress site administrators using this plugin should prioritize immediate updates to mitigate potential exploitation.
Original NVD Description
The WPMU DEV Dashboard plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 5.0.1. This is due to inconsistent and ambiguous HMAC message construction between the unauthenticated `wdpsso_step1` and `wdpsso_step2` AJAX actions, where step 1 signs and discloses an unseparated concatenation of the token, state, redirect, and domain values, while step 2 verifies an unseparated concatenation that omits the domain field. This makes it possible for unauthenticated attackers, on sites connected to WPMU DEV with Hub SSO enabled and mapped to an administrator, to obtain a valid HMAC from step 1 and replay it to step 2 by moving the domain value into the redirect field, resulting in an authenticated administrator session.