Full Disclosure mailing list archives

Re: Firefox 2.0.0.12 SSL Spoofing and Domain Guessing vulnerabilities


From: "Rob Thompson" <my.security.lists () gmail com>
Date: Mon, 4 Feb 2008 13:10:55 -0800

I only see that FF is current to version 2.0.0.11.  Are you sure that
you are finding this in 2.0.0.12?  If so, where are you getting this
version from?

On Feb 4, 2008 12:10 PM, carl hardwick <hardwick.carl () gmail 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 () 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@hotmail

works fine also :)

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-- 
Rob

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