MDTF WordPress Plugin SQL Injection Vulnerability for Authenticated Users

A SQL injection vulnerability has been identified in the MDTF – Meta Data and Taxonomies Filter plugin for WordPress, affecting all versions through 1.3.3.5. The vulnerability arises from inadequate escaping of user-supplied data in the 'key' attribute of the 'mdf_value' shortcode, coupled with a lack of proper preparation for the SQL query. This flaw allows authenticated attackers with Contributor-level access or higher to inject additional SQL commands into existing queries, potentially leading to the extraction of sensitive information from the database.

Impact

Exploitation of this vulnerability allows for SQL injection, where an attacker can manipulate SQL queries to access or modify database information. In this case, it could be used to extract sensitive data from the database.

Reproduction

To reproduce this vulnerability, an authenticated user with Contributor-level access or higher can use the 'mdf_value' shortcode, including a 'key' attribute that is not properly sanitized. The injected SQL could then be used to manipulate the database queries and extract information.

Remediation

Users are advised to update the MDTF – Meta Data and Taxonomies Filter plugin to version 1.3.3.6 or later.