Better Find and Replace < 1.6.8 - Missing Authorization to Authenticated (Subscriber+) Privilege Escalation

Description

The Better Find and Replace plugin for WordPress is vulnerable to unauthorized Privilege Escalation due to a missing capability check on the db_string_replace() function in all versions up to, and including, 1.6.7. This makes it possible for authenticated attackers, with Subscriber-level access and above, to replace values in the database that can be leveraged to achieve privilege escalation.