Full Disclosure mailing list archives

RE: AW: RE: Computer Sabotage by Microsoft


From: "Rainer Gerhards" <rgerhards () hq adiscon com>
Date: Fri, 12 Sep 2003 17:34:52 +0200

As I said, I do not have an XBOX... Somebody who can confirm? 

Rainer Gerhards wrote:
I may be wrong, but I thought they would obtain the MAC address via
some API they have in their XBOX, that is they talk to the box, ask
it for its address and the box replies with it. Then, the router
won't help.
Surely that would make it even worse - as all that is needed 
is the xbox
itself, and a hack of the API that increments the mac by one 
every time it
is queried?

I assume, if they are not dumb-minded, that the communication is using
strong cryptography and that the API also deals with cryptography (if it
exists). So it should be hard to do. But if you hack the box, that could
probably make it really worse.

One safeguard against this would be to only allow one MAC address per IP
within a given period of time. That doesn't mitigate the total risk, but
it would reduce such a DoS on innocent XBOXes... As would a whitelist of
shipped MACs.

Rainer

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