Selectively Delaying Instructions to Prevent Microarchitectural Replay Attacks
Christos Sakalis,
Stefanos Kaxiras,
Magnus Själander
Abstract:MicroScope, and microarchitectural replay attacks in general, take advantage of the characteristics of speculative execution to trap the execution of the victim application in an infinite loop, enabling the attacker to amplify a side-channel attack by executing it indefinitely. Due to the nature of the replay, it can be used to effectively attack security critical trusted execution environments (secure enclaves), even under conditions where a side-channel attack would not be possible. At the same time, unlike … Show more
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