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Date:      Thu, 2 Jul 1998 16:56:14 +0000
From:      Niall Smart <rotel@indigo.ie>
To:        Poul-Henning Kamp <phk@critter.freebsd.dk>, rotel@indigo.ie
Cc:        "Allen Smith" <easmith@beatrice.rutgers.edu>, dg@root.com, security@FreeBSD.ORG, njs3@doc.ic.ac.uk, dima@best.net, abc@ralph.ml.org, tqbf@secnet.com
Subject:   Re: bsd securelevel patch question
Message-ID:  <199807021556.QAA00294@indigo.ie>
In-Reply-To: Poul-Henning Kamp <phk@critter.freebsd.dk> "Re: bsd securelevel patch question" (Jul  2,  5:35pm)

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On Jul 2,  5:35pm, Poul-Henning Kamp wrote:
} Subject: Re: bsd securelevel patch question
>
> >I still agree with you for other reasons though, if an attacker
> >creates a new service people might use it even though it isn't a
> >legitimate service setup my the sysadmin.
> 
> Right, but if the attacker has hacked your system enough to bind
> to a socket < 1024, he >OWNS< it.  Any further attempt at adding
> security is bogus, and can at best OPEN the window more because
> you will be adding more complexity, rather than subtract from it.

Thats not true, if he hacks the user/group that the web server runs
at then he only owns the web server, the only additional priviledge
he gains is the ability to bind to port 80.

Niall

-- 
Niall Smart.        PGP: finger njs3@motmot.doc.ic.ac.uk
FreeBSD: Turning PC's into Workstations: www.freebsd.org

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