Debugging mechanism in Intel CPUs allows seizing control via USB port

Re:Debugging mechanism in Intel CPUs allows seizing control ... by Animats on Tuesday January 10, 2017 @01:15AM (#13363034)

Looking at the video, Intel put in their own support for this on their standard USB-3 ports.[1] It's not USB-C hardware JTAG. It can be disabled in the BIOS settings, supposedly, and locked against further changes.[2] Apparently it ships enabled.

[1] https://youtu.be/QuuTLkZFsug?list=PLOcrXzpA0W82Z49Pj0v-cehuv... [2] https://youtu.be/QuuTLkZFsug?list=PLOcrXzpA0W82Z49Pj0v-cehuv...

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Re:Debugging mechanism in Intel CPUs allows seizing control ... by ChuckMcM on Tuesday January 10, 2017 @01:25AM (#13363078)

Wow, time to find the special USB port and fill it with Epoxy on your system.

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Re:Debugging mechanism in Intel CPUs allows seizing control ... by cwillu on Tuesday January 10, 2017 @01:57AM (#13363202)

or put a solder bridge across the two pins.

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Re:Debugging mechanism in Intel CPUs allows seizing control ... by deutronium on Tuesday January 10, 2017 @06:29AM (#13364108)

I assume "USB Debug" option in my BIOS refers to this feature, however it did seem to be shipped "Disabled" for me.

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Re:Debugging mechanism in Intel CPUs allows seizing control ... by RyJones on Tuesday January 10, 2017 @11:23AM (#13365977)

I just looked into this on my Dell M3800 with A10 BIOS. This option derates your USB 3 ports to USB 2, so that older versions of Windows that don't support USB 3 out-of-box can still boot on the hardware. I assume once you get through the install from your USB stick, you would install drivers and disable this debug mode

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