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Date: Wed, 16 Feb 2011 14:31:13 +0100 From: Jimmy Bandit <jimmy.bandit.music@...glemail.com> To: full-disclosure@...ts.grok.org.uk Subject: Ruby on Rails Vulnerability hi, the X-Forwarded-For headerfield isn't sanitized if the request comes from a class c network. This would affect intranet-applications. i made a poc screencast that shows the bug with the latest rails version with devise (authentication-plugin) and more possible attacks http://webservsec.blogspot.com/2011/02/ruby-on-rails-vulnerability.html quick-fix for your intranet-apps: check request.remote_ip before you use it best regards J _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/