Hyper-Threading has serious security flaw

Posted on Friday, May 13 2005 @ 18:24 CEST by Thomas De Maesschalck
It is reported that Intel's Hyper-Threading technology holds a serious security flaw for servers:
Hyper-Threading, as currently implemented on Intel Pentium Extreme Edition, Pentium 4, Mobile Pentium 4, and Xeon processors, suffers from a serious security flaw. This flaw permits local information disclosure, including allowing an unprivileged user to steal an RSA private key being used on the same machine. Administrators of multi-user systems are strongly advised to take action to disable Hyper-Threading immediately; single-user systems (i.e., desktop computers) are not affected.
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