full-disclosure - Re: Firefox 2.0.0.12 SSL Spoofing and Domain Guessing vulnerabilities

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Message-ID: <649944.3191202167107189.JavaMail.juha-matti.laurio@netti.fi>
Date: Tue, 5 Feb 2008 01:18:26 +0200 (EET)
From: Juha-Matti Laurio <juha-matti.laurio@...ti.fi>
To: carl hardwick <hardwick.carl@...il.com>, full-disclosure@...ts.grok.org.uk
Subject: Re: Firefox 2.0.0.12 SSL Spoofing and Domain
 Guessing vulnerabilities

The most recent Firefox 2.0.0.12 version is RC4 still:
http://www.mozilla.com/en-US/firefox/2.0.0.12/releasenotes/

You can't download Firefox 2.0.12 Final yet.

Juha-Matti

carl hardwick <hardwick.carl@...il.com> wrote: 
> Firefox seems to have trouble with defining the proper hostname when
> requesting a ssl connection. I was able to trick Firefox in thinking
> the hostname behind the at-sign is legit and the same as the URI that
> requested an ssl connection, and this without a warning.
> 
> PoC: https://www.gmail.com%C0%AF%C0%AF%C0%C0%80@...uehost.com
> 
> You can add as much garbage between .com and the @ sign.
> 
> So what else can we do?
> 
> PoC:
> www.cnn.com%C0%AF%C0%AF%C0%C0%80@...gle
> www.gmail.com%C0%AF%C0%AF%C0%C0%80@...mail
> 
> ah heck we don't need that at all:
> www.gmail.comxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx@...mail
> 
> works fine also :)
> 

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