Date: Tue, 26 Jun 2012 01:53:23 +0100 From: RW <rwmaillists@googlemail.com> To: freebsd-security@freebsd.org Subject: Re: Hardware potential to duplicate existing host keys... RSA DSA ECDSA was Add rc.conf variables... Message-ID: <20120626015323.02b7f348@gumby.homeunix.com> In-Reply-To: <4FE8F814.5020906@FreeBSD.org> References: <CA%2BQLa9A4gdgPEn3YBpExTG05e4mqbgxr2kJ16BQ27OSozVmmwQ@mail.gmail.com> <86zk7sxvc3.fsf@ds4.des.no> <CA%2BQLa9Dyu96AxmCNLcU8n5R21aTH6dStDT004iA516EH=jTkvQ@mail.gmail.com> <20120625023104.2a0c7627@gumby.homeunix.com> <86pq8nxtjp.fsf@ds4.des.no> <20120625223807.4dbeb91d@gumby.homeunix.com> <4FE8DF29.50406@FreeBSD.org> <20120625235310.3eed966e@gumby.homeunix.com> <4FE8F814.5020906@FreeBSD.org>
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On Mon, 25 Jun 2012 16:45:24 -0700 Doug Barton wrote: > On 06/25/2012 15:53, RW wrote: > > On Mon, 25 Jun 2012 14:59:05 -0700 > > Doug Barton wrote: > > > >>>> Having a copy of the host key allows you to do one thing and one > >>>> thing only: impersonate the server. It does not allow you to > >>>> eavesdrop on an already-established connection. > >>> > >>> It enables you to eavesdrop on new connections, > >> > >> Can you describe the mechanism used to do this? > > > > Through a MITM attack if nothing else > > Sorry, I wasn't clear. Please describe, in precise, reproducible > terms, how one would accomplish this. Or, link to known script-kiddie > resources ... whatever. My point being, I'm pretty confident that > what you're asserting isn't true. But if I'm wrong, I'd like to learn > why. Servers don't always require client keys for authentication. If they don't then a MITM attack only needs the server's key.
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