Attack on Intell CPU may harm XP.
Wednesday, March 18, 2009 at 4:09 pm Windows XP Annoyances Discussion Forum
Posted by geek9pm
(286 messages posted)
A new kind of root kit could be coming your way if you use an Intel based XP system.
Just when you wee thinking it is safe to get in the water again!
...
The attack allows for privilege escalation from Ring 0 to the SMM on many recent
motherboards with Intel CPUs. Interestingly, the very same attack will be presented
by another researcher, Loic Duflot, at the CanSecWest conference in Vancouver, Canada,
on... Thursday 19th, 1600 UTC. BTW, this is a different SMM-targeting attack than
the one we mentioned during our recent TXT talk and that is scheduled to be presented
later ...
Source:
http://theinvisiblethings.blogspot.com/
Geek9pm 
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