Re: getting rid of ME on modern CPUs (Re: [qubes-users] QSB #46: APT update mechanism vulnerability)

2019-01-29 Thread Stuart Perkins
Like I said, we need to reverse engineer.

On Mon, 28 Jan 2019 17:56:17 +
Holger Levsen  wrote:

>On Mon, Jan 28, 2019 at 11:46:55AM -0600, Stuart Perkins wrote:
>> Up to a certain manufacture, you can go to coreboot and lose the ME 
>> entirely.  After that point, setting the HAP bit may be your best option.  
>> We need someone to to reverse engineer the ME and implement enough of it in 
>> coreboot to take over so the newer ones will run.  
>
>thats not enough. on modern intel cpus there's boot-guard which will
>prevent booting with coreboot unless it's signed with a secret intel
>key.
>
>

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getting rid of ME on modern CPUs (Re: [qubes-users] QSB #46: APT update mechanism vulnerability)

2019-01-28 Thread Holger Levsen
On Mon, Jan 28, 2019 at 11:46:55AM -0600, Stuart Perkins wrote:
> Up to a certain manufacture, you can go to coreboot and lose the ME entirely. 
>  After that point, setting the HAP bit may be your best option.  We need 
> someone to to reverse engineer the ME and implement enough of it in coreboot 
> to take over so the newer ones will run.

thats not enough. on modern intel cpus there's boot-guard which will
prevent booting with coreboot unless it's signed with a secret intel
key.


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tschüß,
Holger

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