> I don't think this is actually possible with physical access — a properly configured system will at least require a supervisor password to disable Secure Boot.
I don't think AMT lets you bypass a supervisor password, so you'd have the same problem there. The point I was trying to make (not terribly clearly) was that it doesn't give you any means of persistence that physical access wouldn't also give you.
> This is not true if you've rolled your own Platform Keys and sign&boot plain kernel images (with initramfs bundled into them).
True, there are some niche configurations where you wouldn't have to worry about this.
Power management, mobile and firmware developer on Linux. Security developer at Aurora. Ex-biologist. mjg59 on Twitter. Content here should not be interpreted as the opinion of my employer. Also on Mastodon.
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Date: 2017-05-01 11:11 pm (UTC)I don't think AMT lets you bypass a supervisor password, so you'd have the same problem there. The point I was trying to make (not terribly clearly) was that it doesn't give you any means of persistence that physical access wouldn't also give you.
> This is not true if you've rolled your own Platform Keys and sign&boot plain kernel images (with initramfs bundled into them).
True, there are some niche configurations where you wouldn't have to worry about this.