[coreboot] Intel ME Question
Taiidan at gmx.com
Taiidan at gmx.com
Sat Dec 24 20:00:32 CET 2016
On 12/23/2016 03:13 PM, bancfc at openmailbox.org wrote:
> Seeing that many of you know a lot about Intel's ME I wanted to ask a
> couple of things if its ok.
> * Is the ME network accessible on all Intel chips or only the vPro
> ones with AMT?
> * I saw an interesting take on this in the link below, instead of the
> usual FUD surrounding this topic whenever its mentioned. What is your
> take on what he says?
- Every intel system from around 2008 on has ME. vPro is a module loaded
in to ME to provide various corporate manageability features but every
chipset is technically network accessible. I don't really deal with
desktop hardware anymore but AFAIK on intel's consumer chipset (not Q/B)
motherboards there are several network basic manageability features that
do not require vPro. - I will investigate this and get back to you.
"You value your privacy, so you run on a system with Core 2 Duo,
complete with all the errata? NX-disabling bugs, cache-attacks that work
any chance of DMA attack resistance (or VT-d without interrupt
remapping, so all but useless even if it is present). You'll also be
without AES-NI so side-channel attacks will be much easier (AES has huge
S-boxes), and without RDRAND, so early boot will see crappy entropy
(please don't bring up the RDRAND is evil myth)."
- I have a KGPE-D16 which has all those great features and 100% libre
firmware, you can even play the latest games on it with max settings if
you desire and the 62xx cpu works without microcode.
- There is a world beyond x86
or buy a POWER server from IBM and stick in a graphics card - very high
performance and available now.
* He never figured that maybe AES-NI has some kind of fatal problem and
that's why "they" let us have it, physical access is FATAL and if you
are so concerned about side channel attacks you will build some kind of
shielding; besides any good crypto libs have obfuscation.
* An elite hacker.....who wastes time posting on public forums (If I had
the level of skill he claims to have I sure as shit wouldn't be writing
this email) and who uses machines that have ME, sure sure but he uses
version 11 so it is OK.
* ME has the technical ability to be used to access your data remotely,
without a BMC addon (has he never heard of AMT iKVM? or the remote ISO
* He assumes that when he dumps and dis-assembles the firmware he is
receiving an honest version and not a "special" version with the
backdoor removed which could easily be done on a subverted system.
"Intel wouldn't do this because it would be bad for optics"
Every criminal thinks that they're going to get away with it.
ME isn't a backdoor directly (remotebackdoor.exe), it is simply a great
framework for a backdoor.
The idea is that either you can simply use a one time exploit in the
operating system to root ME and gain an undetectable perma rootkit, even
if we assume intel has out best intentions at heart it is still a
massive vulnerability, or that there is a secret exploit (intentional or
unintentional) in ME to activate it via network and load a special
module, OR that with physical access you already have a great backdoor
hardware ready to go all you need is to re-write the firmware.
I believe that there is a "magic" network accessible ME backdoor
intentional or otherwise as it is a silver bullet for any intel agency
or criminal organization so it makes sense for them to try to do it even
if it isn't there by default there isn't anything stopping a well funded
group from subverting an OEM and adding an incredibly subtle flaw in the
networking controllers for special customers such as the logistics
division of a foreign military (no fuel + no food = no army)
Having ME onboard makes it much easier to do that, instead of having to
create from scratch a remote access ability you simply subvert ME.
Some other will chime in and elaborate on this but bottom line - it is
dangerous to have on your computer, it exists to take away control from
the user for DRM (PAVP) and someday soon intel will patch the nerfing
By the way AMD ZEN/FM2 has PSP and some ARM has TrustZone.
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