Hardwared Based CPU Undervolting on The Cheap
summary
Describes VoltPillager, a low-cost (~$30) hardware device that connects to the motherboard’s Voltage Regulator (VR) interface to control CPU voltage. Demonstrates using this unprotected VR interface to perform fault-injection attacks that break Intel SGX confidentiality and integrity, including proof-of-concept key-recovery against cryptographic code, and argues this undermines assumptions in the SGX adversary model.
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