"GoFetch Attack- Researchers Uncover Unfixable Vulnerability in Apple CPUs Affecting Cryptographic Security"
"GoFetch Attack- Researchers Uncover Unfixable Vulnerability in Apple CPUs Affecting Cryptographic Security"
A team of researchers has detailed a new side-channel attack method dubbed "GoFetch," that exploits an unpatchable vulnerability in Apple's M series of chips and enables threat actors to extract secret keys used in cryptography operations. The method is described as a microarchitectural side-channel attack that can extract secret keys from constant-time cryptographic implementations. The attack is aimed at a hardware optimization known as the Data Memory-Dependent Prefetcher (DMP). It tries to improve performance by prefetching addresses found in program memory.