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

scott redhowlingwolves at nc.rr.com
Tue Feb 5 03:34:33 GMT 2008


This is obviously a bug in the newest beta release and should be 
reported there.Why the OP chose not to do this is a matter for speculation.

Regards,
Scott

steve menard wrote:
> 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 at 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 at google
>> www.gmail.com%C0%AF%C0%AF%C0%C0%80 at hotmail
>>
>> ah heck we don't need that at all:
>> www.gmail.comxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx at hotmail
>>
>> works fine also :)
>>
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> _______________________________________________
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