Messages in this thread |  | | | Date | Fri, 13 May 2005 11:30:27 -0700 (PDT) | | From | Vadim Lobanov <> | | Subject | Re: Hyper-Threading Vulnerability |
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On Fri, 13 May 2005, Andy Isaacson wrote:
> 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. > > -andy > -
Wouldn't scheduling appear as a rather big time delta (in measuring the cache access times), so you would know to disregard that data point?
(Just wondering... :-) )
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