Faults in Our Bus: Novel Bus Fault Attack to Break ARM TrustZone
Nimish Mishra
Network and Distributed System Security (NDSS) Symposium 2024 · Day 2 · TEE & SGX Security
The proliferation of Internet of Things (IoT) devices, often powered by complex, high-frequency Systems-on-a-Chip (SoCs), presents a significant security challenge. With billions of connected devices anticipated by 2025, their widespread deployment in unsupervised environments makes them prime targets for physical adversaries. Traditional physical attacks, particularly **Fault Injection (FI)**, have historically targeted cryptographic implementations on hardware like FPGAs and microprocessors through methods such as voltage manipulation, clock glitches, or electromagnetic (EM) and optical pulses. However, modern SoCs are increasingly resilient to these conventional techniques, often lacking accessible interfaces, featuring protective metal shields, and employing robust operating system access controls.