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Hardware Attack Exposes nRF52 Debugger

posted by Fnord666 on Friday July 17 2020, @01:27PM   Printer-friendly
from the debugging-for-fun-and-profit dept.

MrPlow writes:

Submitted via IRC for boru.

https://www.infoq.com/news/2020/07/nRF52-debug-resurrect/:

A recent hardware attack on the Nordic nRF52 chip uses local access to gain chip-level debugging capabilities that persist in silicon, unpatchable in software. Nordic has confirmed the issue and encouraged device manufacturers to detect openings of the enclosure, as the chip is not hardened against fault injection.

This chip is used in so many bluetooth products. Might be fun to go wardriving and find some and see if any have accessible SWD pins.

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  • (Score: 2) by sjames on Friday July 17 2020, @08:00PM

    by sjames (2882) on Friday July 17 2020, @08:00PM (#1023047) Journal

    A sufficiently determined attacker will always be able to read out data from hardware. It's just a matter of how determined the attacker is.

    The best you can do is to make the device tamper evident and make it take long enough that you can notice that the device is missing and take appropriate security measures.

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