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Date:      Sat, 29 Aug 1998 10:01:25 -0400 (EDT)
From:      Mike Holling <myke@ees.com>
To:        Andrew McNaughton <andrew@squiz.co.nz>
Cc:        "Matthew D. Fuller" <fullermd@futuresouth.com>, "Jan B. Koum " <jkb@best.com>, scex <scex@dqc.org>, "Jeffrey J. Mountin" <jeff-ml@mountin.net>, security@FreeBSD.ORG
Subject:   Re: Shell history
Message-ID:  <Pine.NEB.4.00.9808291000010.279-100000@phluffy.lm.com>
In-Reply-To: <Pine.BSF.3.96.980829191526.6282G-100000@aniwa.sky>

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> > On Fri, Aug 28, 1998 at 10:42:52PM -0700, Jan B. Koum  woke me up to tell me:
> > > 	Hmm.. you are right, but what will stop an attacker who has
> > > freebsd box or has access to one to download the binary?
> > 
> > mount -u -o noexec /home?
> > (and /tmp, of course)
> 
> Does this stop an attacker doing something like loading a file as a
> library from perl, using code on stdin?

A sufficiently skilled attacker will probably always be able to get root
once they have shell access on a box.  The key is to prevent them from
getting to that point in the first place.

- Mike



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