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Date:      Wed, 16 Mar 2011 08:35:37 +0100
From:      =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no>
To:        RW <rwmaillists@googlemail.com>
Cc:        freebsd-security@freebsd.org
Subject:   Re: It's not possible to allow non-OPIE logins only from trusted networks
Message-ID:  <8662rjy0ty.fsf@ds4.des.no>
In-Reply-To: <20110315132258.01b8e976@gumby.homeunix.com> (RW's message of "Tue, 15 Mar 2011 13:22:58 %2B0000")
References:  <1299682310.17149.24.camel@w500.local> <alpine.BSF.2.00.1103100147350.1891@qvfongpu.qngnvk.ybpny> <1299769253.20266.23.camel@w500.local> <2E5C0CE8-4F70-4A4D-A91D-3274FD394C80@elvandar.org> <1299784361.18199.4.camel@w500.local> <20110310202653.GG9421@shame.svkt.org> <1299798547.20831.59.camel@w500.local> <20110313204054.GA5392@server.vk2pj.dyndns.org> <1300050377.5900.12.camel@w500.local> <20110313220552.5b79de13@gumby.homeunix.com> <86ipvky8md.fsf@ds4.des.no> <20110315132258.01b8e976@gumby.homeunix.com>

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RW <rwmaillists@googlemail.com> writes:
> Dag-Erling Sm=C3=B8rgrav <des@des.no> writes:
> > RW <rwmaillists@googlemail.com> writes:
> > > IIRC there is/was a weakness in FreeBSD's OPIE implementation in
> > > that it's susceptible to rainbow table attacks - I think part of
> > > the hash is discarded.
> > Can you provide more details?
> http://lists.freebsd.org/pipermail/freebsd-security/2009-February/005114.=
html

Heh :)

My first comment was a reference to the quality of the code, not the
design.  My second comment is basically the same thing I just said - we
cannot change this without breaking compatibility.

DES
--=20
Dag-Erling Sm=C3=B8rgrav - des@des.no



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