Re: Missing the point....
The flaw exists in the supporting "Platform Controller Hub" or PCH rather than the CPU, so on a multi-processor system this is still likely to be present, assuming the PCH has the Intel Management Engine functionality.
As far as I can tell, this appears to make TPM/content protection keys vulnerable and may provide a way of introducing firmware onto hardware in the system. I say may as access appears to be gated by ROM instructions - it's not a free for all.
Its worth noting that this is using an Intel debug bus for access - while this information and the tools to use it are being publicly disclosed, Intel will already have something similar for debugging/development purposes. And will likely have provided it to their friends.
Biting the hand that feeds IT
