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Message-ID: <AANLkTim_EaRvvfbnLODe4YOPcjDHFYKQt-4hbh2o+4ZX@mail.gmail.com> Date: Mon, 14 Mar 2011 10:57:34 -0400 From: Jeffrey Walton <noloader@...il.com> To: coderman <coderman@...il.com> Cc: Matt McCutchen <matt@...tmccutchen.net>, full-disclosure@...ts.grok.org.uk Subject: Re: TLS servers with overbroad certificates may mishandle diverted connections On Mon, Mar 14, 2011 at 6:43 AM, coderman <coderman@...il.com> wrote: > 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. > > ... > > 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...) Its always nice when the reception's machine in the lobby is trusted to act as a web server and serve content. _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
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