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arXiv · 1801.07397

HCIC: Hardware-assisted Control-flow Integrity Checking

Jiliang Zhang·Binhang Qi·Gang Qu
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Abstract

Recently, code reuse attacks (CRAs), such as return-oriented programming (ROP) and jump-oriented programming (JOP), have emerged as a new class of ingenious security threatens. Attackers can utilize CRAs to hijack the control flow of programs to perform malicious actions without injecting any codes. Many defenses, classed into software-based and hardware-based, have been proposed. However, software-based methods are difficult to be deployed in practical systems due to high performance overhead. Hardware-based methods can reduce performance overhead but may require extending instruction set architectures (ISAs) and modifying compiler or suffer the vulnerability of key leakage. To tackle these issues, this paper proposes a new hardware-based control flow checking method to resist CRAs with negligible performance overhead without extending ISAs, modifying compiler and leaking the encryption/decryption key. The key technique involves two control flow checking mechanisms. The first one is the encrypted Hamming distances (EHDs) matching between the physical unclonable function (PUF) response and the return addresses, which prevents attackers from returning between gadgets so long as the PUF response is secret, thus resisting ROP attacks. The second one is the liner encryption/decryption operation (XOR) between PUF response and the instructions at target addresses of call and jmp instructions to defeat JOP attacks. Advanced return-based full-function reuse attacks will be prevented with the dynamic key-updating method. Experimental evaluations on benchmarks demonstrate that the proposed method introduces negligible 0.95% run-time overhead and 0.78% binary size overhead on average.

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Jiliang Zhang, Binhang Qi, Gang Qu. 2018-09-19. HCIC: Hardware-assisted Control-flow Integrity Checking. https://doi.org/10.1109/jiot.2018.2866164

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