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Home » Hacking News » Intel HyperThreading SMT vulnerability

Intel HyperThreading SMT vulnerability

by Nikola Strahija on May 16th, 2005 Intel has obligated to work with various operating system vendors to stop its HyperThreading system being used by malicious software to search for sensitive data.

However, Intel claims the problem is a minor one, because it can only be exploited once the security of the targeted desktop or server has already been compromised.

The vulnerability arises because code running on one thread can access cache and memory being used by another thread. If the first one is a crypto-key sniffer and the other is caching said key, the first thread can copy the information and then relay it to another machine.
"The flaw is not considered critical, but it will be fixed in subsequent updates to the Microsoft and Linux operating systems," Intel said.

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