full-disclosure - Re: TLS servers with overbroad certificates may mishandle diverted connections

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Message-ID: <AANLkTim0bht8P+XDV9cP6n5bhDiw5sAeoqGrb0kN834R@mail.gmail.com>
Date: Mon, 14 Mar 2011 03:43:51 -0700
From: coderman <coderman@...il.com>
To: Matt McCutchen <matt@...tmccutchen.net>
Cc: full-disclosure@...ts.grok.org.uk
Subject: Re: TLS servers with overbroad certificates may
 mishandle diverted connections

On Sun, Mar 13, 2011 at 7:31 PM, Matt McCutchen <matt@...tmccutchen.net> wrote:
> If I make a TLS connection to example.com, a MITM attacker can divert
> the connection to any server that bears a certificate valid for
> example.com, ... especially likely to arise with wildcard certificates.
> ...
> I plan to release an automated testing
> tool, but I decided to go ahead and publicize the issue first.

i can has code?

p.s. marsh ray: wildcard certs are a useful tool when properly applied.
(though i admit most won't use them properly. par for the crypto course...)

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