EMFI Attack Vulnerability in Espressif ESP32 Devices

CVE-2023-35818

Summary

An issue on Espressif ESP32 3.0 devices allows attackers to execute electromagnetic fault injection (EMFI) attacks. This vulnerability can influence the program counter value at the CPU context level, undermining both Secure Boot and Flash Encryption protections. By leveraging this influence, an attacker may access the ROM download mode, leading to potential exploitation of encrypted flash contents, exposing them in cleartext, or executing unauthorized stub code.

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