ShowTime: Amplifying Arbitrary CPU Timing Side Channels
Antoon Purnal, Márton Bognár, Frank Piessens, Ingrid M.R. Verbauwhede · 2023
Microarchitectural attacks typically rely on precise timing sources to uncover short-lived secret-dependent activity in the processor. In response, many browsers and even CPU vendors restrict access to fine-grained timers. While some attacks are still possible, several state-of-the-art microarchitectural attack vectors are actively hindered or even eliminated by these restrictions.