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Side-channel attacks on microprocessors, like the RISC-V, exhibit securityvulnerabilities that lead to several design challenges. Hence, it is imperativeto study and analyze these security vulnerabilities comprehensively. In thispaper, we present a brief yet comprehensive study of the securityvulnerabilities in modern microprocessors with respect to side-channel attacksand their respective mitigation techniques. The focus of this paper is toanalyze the hardware-exploitable side-channel attack using power consumptionand software-exploitable side-channel attacks to manipulate cache. Towardsthis, we perform an in-depth analysis of the applicability and practicalimplications of cache attacks on RISC-V microprocessors and their associatedchallenges. Finally, based on the comparative study and our analysis, wehighlight some key research directions to develop robust RISC-V microprocessorsthat are resilient to side-channel attacks.

Side-Channel Attacks on RISC-V Processors: Current Progress, Challenges, and Opportunities