Prime+Retouch: When Cache is Locked and Leaked

arXiv:2402.15425v1 Announce Type: new
Abstract: Caches on the modern commodity CPUs have become one of the major sources of side-channel leakages and been abused as a new attack vector. To thwart the cache-based side-channel attacks, two types of countermeasures have been proposed: detection-based ones that limit the amount of microarchitectural traces an attacker can leave, and cache prefetching-and-locking techniques that claim to prevent such leakage by disallowing evictions on sensitive data. In this paper, we present the Prime+Retouch attack that …

arxiv attack attacker attacks attack vector cache channel countermeasures cpus cs.ar cs.cr detection leaked limit locked major prime side-channel side-channel attacks traces types