Comment on Exploiting System Management Mode with a very long interruptComments−engzaanin1moThe timeout idea is interesting. If firmware can strictly bound SMM execution time, would that actually eliminate this class of attack, or just turn it into a crash/DoS instead?−inigyou1moSomeone would definitely notice if SMM took a long time. It would look like the core hung. The exploit is hanging another core outside SMM.
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The timeout idea is interesting. If firmware can strictly bound SMM execution time, would that actually eliminate this class of attack, or just turn it into a crash/DoS instead?
Someone would definitely notice if SMM took a long time. It would look like the core hung. The exploit is hanging another core outside SMM.