Ruby on Rails Web Console before 2.1.3, as used with Ruby on Rails 3.x and 4.x, does not properly restrict the use of X-Forwarded-For headers in determining a client's IP address, which allows remote attackers to bypass the whitelisted_ips protection mechanism via a crafted request to request.rb.
id: CVE-2015-3224
info:
name: Ruby on Rails Web Console - Remote Code Execution
author: pdteam
...