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The PACMAN Attack: Breaking PAC on Apple M1 with Hardware Attacks

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No logo availableDEF CON
 Ravichandran, Joseph Taek Na, Weon Lang, Jay Yan, Mengjia

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The PACMAN Attack: Breaking PAC on Apple M1 with Hardware Attacks
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85
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CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
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What do you get when you cross pointer authentication with microarchitectural side channels? The PACMAN attack is a new attack technique that can bruteforce the pointer authentication code (PAC) for an arbitrary kernel pointer without causing any crashes using microarchitectural side channels. We demonstrate the PACMAN attack against the Apple M1 CPU.