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Leaking Secrets through Modern Branch Predictor in the Speculative World
[article]
2021
arXiv
pre-print
Transient execution attacks that exploit speculation have raised significant concerns in computer systems. Typically, branch predictors are leveraged to trigger mis-speculation in transient execution attacks. In this work, we demonstrate a new class of speculation-based attack that targets branch prediction unit (BPU). We find that speculative resolution of conditional branches (i.e., in nested speculation) alter the states of pattern history table (PHT) in modern processors, which are not
arXiv:2107.09833v1
fatcat:3fovrjwoxnglla6g53cwcutqcu