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Date:      Wed, 8 Nov 2006 15:23:06 +0100
From:      Erik Trulsson <ertr1013@student.uu.se>
To:        Lowell Gilbert <freebsd-security-local@be-well.ilk.org>
Cc:        freebsd-security@freebsd.org, mal content <artifact.one@googlemail.com>
Subject:   Re: Sandboxing
Message-ID:  <20061108142306.GA64711@owl.midgard.homeip.net>
In-Reply-To: <44irhq6ngd.fsf@be-well.ilk.org>
References:  <8e96a0b90611080439n558022edj79febf458494ef6e@mail.gmail.com> <8e96a0b90611080441t2b486637ya10acd5a1dd77690@mail.gmail.com> <44irhq6ngd.fsf@be-well.ilk.org>

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On Wed, Nov 08, 2006 at 09:08:02AM -0500, Lowell Gilbert wrote:
> "mal content" <artifact.one@googlemail.com> writes:
> 
> > On 08/11/06, mal content <artifact.one@googlemail.com> wrote:
> >> Hi.
> >>
> >> This is mostly hypothetical, just because I want to see how knowledgeable
> >> people would go about achieving it:
> >>
> >> I want to sandbox Mozilla Firefox. For the sake of example, I'm running it
> >> under my own user account. The idea is that it should be allowed to
> >> connect to the X server, it should be allowed to write to ~/.mozilla and
> >> /tmp.
> >>
> >> I expect some configurations would want access to audio devices in
> >> /dev, but for simplicity, that's ignored here.
> >>
> >> All other filesystem access is denied.
> >>
> >> Ready...
> >>
> >> Go!
> >>
> >> MC
> >>
> >
> > I forgot to add: Use of TrustedBSD extensions is, of course, allowed.
> 
> Putting an X Windows application in a sandbox is kind of silly.  After
> all, X has to have direct access to memory.

The X *server* needs direct access to memory. X clients (like Firefox or
just about any other application using X) does not need direct access to
memory.  They don't even need to run on the same machine as the X server.




>  A virtual machine
> approach, with a whole virtual set of memory, might make more sense.
> I use that (via qemu), although not for exactly the same reasons.



-- 
<Insert your favourite quote here.>
Erik Trulsson
ertr1013@student.uu.se



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