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arXiv · 2307.12648

Execution at RISC: Stealth JOP Attacks on RISC-V Applications

Loïc Buckwell·Olivier Gilles·Daniel Gracia Pérez·Nikolai Kosmatov
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Abstract

RISC-V is a recently developed open instruction set architecture gaining a lot of attention. To achieve a lasting security on these systems and design efficient countermeasures, a better understanding of vulnerabilities to novel and potential future attacks is mandatory. This paper demonstrates that RISC-V is sensible to Jump-Oriented Programming, a class of complex code-reuse attacks. We provide an analysis of new dispatcher gadgets we discovered, and show how they can be used together in order to build a stealth attack, bypassing existing protections. A proof-of-concept attack is implemented on an embedded web server compiled for RISC-V, in which we introduced a vulnerability, allowing an attacker to remotely read an arbitrary file from the host machine.

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Loïc Buckwell, Olivier Gilles, Daniel Gracia Pérez, Nikolai Kosmatov. 2023-07-24. Execution at RISC: Stealth JOP Attacks on RISC-V Applications. https://arxiv.org/abs/2307.12648

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