Full Disclosure: Re: Firefox 2.0.0.12 SSL Spoofing and Domain Guessing vulnerabilities

["Joey Mengele" <joey.mengele () hushmail com>]

Confirmed on emacs on freebsd running on an alpha.

J

On Mon, 04 Feb 2008 18:49:59 -0500 Larry Seltzer 
<Larry () larryseltzer com> wrote:
> I get this same warning on FF 3.0 beta 2 on Vista.
>
> Larry Seltzer
> eWEEK.com Security Center Editor
> http://security.eweek.com/
> http://blogs.pcmag.com/securitywatch/
> Contributing Editor, PC Magazine
> larry.seltzer () ziffdavisenterprise com
>
>
> -----Original Message-----
> From: full-disclosure-bounces () lists grok org uk
> [mailto:full-disclosure-bounces () lists grok org uk] On Behalf Of 
> steve
> menard
> Sent: Monday, February 04, 2008 3:36 PM
> To: full-disclosure () lists grok org uk
> Cc: carl hardwick
> Subject: Re: [Full-disclosure] Firefox 2.0.0.12 SSL Spoofing and 
> Domain
> Guessing vulnerabilities
>
> I get a warning on 2.0.0.11 Linux Ubuntu
>
> You are about to log into the site "google" with the username
> "www%2Ecnn () 2Ecom%c0%AF%C0%AF%C0%C0%80", but the website does not 
> require
> authentication. this may be an attempt to trick you Is "google" 
> the site
> you want to visit.?
>
> is this a 2.0.0.12 issue?
> Steve
>
> carl hardwick 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 () roguehost 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 () google
> > www.gmail.com%C0%AF%C0%AF%C0%C0%80 () hotmail
> >
> > ah heck we don't need that at all:
> www.gmail.comxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx@
> hot
> > mail
> >
> > works fine also :)
> >
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