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Re: [Full-disclosure] Firefox 2.0.0.12 SSL Spoofing and Domain Guessing vulnerabilities

From: Juha-Matti Laurio (juha-matti.laurionetti.fi)
Date: Mon Feb 04 2008 - 17:18:26 CST

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.carlgmail.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%80roguehost.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%80google
> www.gmail.com%C0%AF%C0%AF%C0%C0%80hotmail
>
> ah heck we don't need that at all:
> www.gmail.comxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxhotmail
>
> works fine also :)
>

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