God Mode Backdoors, AP Crowdfund vs Wikileaks Models

Steven Schear schear.steve at gmail.com
Fri Aug 24 13:19:34 PDT 2018


I am told, by a very involved developer in this field, that these concerns
are a bit overhyped, limited to now outdated Via C3 CPUs.

On Wed, Aug 15, 2018, 12:15 AM grarpamp <grarpamp at gmail.com> wrote:

> > https://www.tomshardware.com/news/x86-hidden-god-mode,37582.html
> >
> > Some x86 CPUs have hidden backdoors that let you seize
> > root by sending a command to an undocumented RISC core that manages
> > the main CPU, security researcher Christopher Domas told the Black Hat
> > conference here Thursday (Aug. 9).
>
> > "This is really ring -4," he said. "It's a secret, co-located core
> > buried alongside the x86 chip. It has unrestricted access to the x86."
>
> > "These black boxes that we're trusting are things that we have no way
> > to look into," he said. "These backdoors probably exist elsewhere."
>
> > Mode enabled by default. You can reach it from userland. Antivirus
> > software, ASLR and all the other security mitigations are useless."
>
> > https://github.com/xoreaxeaxeax/rosenbridge.
>
>
> On Tue, Aug 14, 2018 at 10:52 AM, Henry Baker <hbaker1 at pipeline.com>
> wrote:
> > Why do we even bother encrypting, when our chips are so corrupt?
>
> > This article strengthens my belief that *all* of our current chips
> > have hidden backdoors thanks to Uncle Sam.  No wonder China wants
> > to design & build their own chips!
>
>
> Anyone who thinks Intel CPU's don't have backdoors... is fucking stupid.
> AMD... same, yet perhaps a slightly lesser form of corporate insidiousness.
> Same for all cell phone CPUs and baseband processors.
> Even "open" ARM and "closed" Apple cores are fully questionable.
> Cisco products... fuck all backdoored.
> Same for every Cable / DSL / Fiber / WiFi Modem / Router / Point.
> IBM Power9... yep, gonna be some secrets in there too.
>
> Anything with any sort of CPU running any sort of OS... backdoored.
> Doesn't matter where or who it comes from or who it's made for...
> China... backdoored.
> Boeing... backdoored.
>
> Only interesting thing is who has the keys.
>
> As said before, you must demand and create...
>
> #OpenFabs , #OpenHW , #OpenSW , #OpenDev , #OpenBiz
>
> You have zero trust until those happen. ZERO.
>
>
> That 20 key dimestore calculator on your desk isn't backdoored.
> If you're lucky.
>
>
> Publishing the backdoors in Intel's products, and
> all the others... makes a fine AP crowdfund target.
> Because the Wikileaks model so far either didn't get
> or hasn't published the scoop.
>
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