Messages in this thread | | | Date | Fri, 13 May 2005 10:13:00 -0700 | From | Andy Isaacson <> | Subject | Re: Hyper-Threading Vulnerability |
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On Fri, May 13, 2005 at 10:32:48AM -0400, Jeff Garzik wrote: > Daniel Jacobowitz wrote: > > http://www.daemonology.net/hyperthreading-considered-harmful/ > > Already read it. This link provides no more information than either of > the above links provide.
He's posted his paper now.
http://www.daemonology.net/papers/htt.pdf
It's a side channel timing attack on data-dependent computation through the L1 and L2 caches. Nice work. In-the-wild exploitation is difficult, though; your timing gets screwed up if you get scheduled away from your victim, and you don't even know, because you can't tell where you were scheduled, so on any reasonably busy multiuser system it's not clear that the attack is practical.
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