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SubjectRe: [RFC] Second attempt at kernel secure boot support
On Fri, Nov 02, 2012 at 05:57:38PM +0000, James Bottomley wrote:
> On Fri, 2012-11-02 at 17:54 +0000, Matthew Garrett wrote:
> > ? That's the message generated by the Windows access control mechanism
> > when you run a binary that requests elevated privileges.
>
> So that's a windows attack vector using a windows binary? I can't really
> see how it's relevant to the secure boot discussion then.

A user runs a binary that elevates itself to admin. Absent any flaws in
Windows (cough), that should be all it can do in a Secure Boot world.
But if you can drop a small trusted Linux system in there and use that
to boot a compromised Windows kernel, it can make itself persistent.

--
Matthew Garrett | mjg59@srcf.ucam.org


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