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Re: DJB's students release 44 *nix software vulnerability advisories
From: "Raymond M. Reskusich" <reskusic () uiuc edu>
Date: Tue, 21 Dec 2004 14:14:59 -0600

On Mon, Dec 20, 2004 at 05:14:22PM -0600, Jonathan T Rockway wrote:
Two points.

Regarding local versus remote, look at it this way:  You have a 100%
secure system.  Then you install NASM.  Now a user FROM THE NETWORK can
send you some tainted assembly code for you to assemble and he can
compromise your account.  That is why it is considered remote.  Local
would mean that I, the attacker, need an account on the target machine to
compromise the target account.  In this nasm case, I do not need an
account.  That is why the wording "remote" was chosen.

What you really have is a local exploit that you can sometimes trick a
person into executing for you.  Not the same thing as a remote
exploit.  You as a remote user have no way of compomising the system
without first penetrating the system in some other way.  Just because
there is a social engineering method to achieve this penetration does
not make this a remote exploit.

I might add that if a person is assembling an untrusted piece of
assembly code, there is a decent chance that he is planning on
executing it.


Now in regards to full disclosure, I think you should all be happy that we
bothered to tell you all about these exploits.  We could have selfishly
used them to compromise machines, but instead we wrote them up and mailed
them off to the users and the authors!  That is very nice of us.

Yeah, you know, if the choice is between criminal activity and this
kind of announcement, you did ok, but I think we all assume that people
in the security community want to actually protect users from security
problems.  Assuming that this is your goal, I think you can do better.

-- 
Raymond M. Reskusich
System Programmer/Administrator
CITES/Engineering Workstation Group
University of Illinois at Urbana-Champaign
reskusic () uiuc edu
pgp key id: D9D38030

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