MySQL Authentication Bypass

Summary
MySQL is prone to an Authentication Bypass. Successful exploitation will yield unauthorized access to the database. All MariaDB and MySQL versions up to 5.1.61, 5.2.11, 5.3.5, 5.5.23 are vulnerable. MariaDB versions from 5.1.62, 5.2.12, 5.3.6, 5.5.23 are not. MySQL versions from 5.1.63, 5.5.24, 5.6.6 are not.
References