Breaking and Securing Memory Isolation in Texas Instruments Microcontrollers
summary
Examines memory-isolation weaknesses in Texas Instruments MSP430 microcontrollers that use Intellectual Property Encapsulation (IPE): the presenters adapt higher-end attack techniques and side-channel methods to leak and inject data, and introduce a controlled call corruption attack that bypasses IPE by manipulating function calls. Then shows defensive work: a software-only mitigation that reuses the microcontroller’s memory protection unit to restore most IPE guarantees, and openIPE, a research prototype implementing and extending IPE’s specification with a firmware layer for rapid security prototyping.
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