Supply chains and trust

By: Rob Thorpe (rthorpe.delete@this.robertthorpeconsulting.com), October 4, 2018 1:09 pm
Room: Moderated Discussions
> Such a microcontroller would require an 8-pin package (power & ground, SPI clock and
> chip select, 4 SPI data to & from bothe BMC & flash). There are 8-pin packages (e.g.
> from NXP) with an area just a little over one square millimeter, which would be hard
> to detect at a normal optical inspection, which only searches for bad soldering.
>
>
> So from a technical point of view, this exploit can be easily done.
>
> Nevertheless, it would require a lot of compliant people at the Chinese subcontractors.
>
> Whoever would do this would need to obtain the original PCB design documents, modify them, provide the
> modified documents in 2 places, both at PCB manufacturing and at PCB assembly (pick & place) and mount
> there an extra reel with the trapdoor component, which will not come from the normal part suppliers.

Who is being accused here? Is it the ODM or someone else?

If it's the ODM then something like this would be quite easy. The ODMs design boards like this. They're responsible for the schematic and the layout. They work from reference designs provided by the chipset manufacturers. The OEM only checks this kind of work. The checking isn't necessarily detailed.

They may be provided by sub-contractors of the ODM too, and manufactured by other sub-contractors.
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TopicPosted ByDate
Supply chains and trustDavid Kanter2018/10/04 08:23 AM
  Supply chains and trustMaynard Handley2018/10/04 09:57 AM
    Supply chains and trustMaynard Handley2018/10/04 10:01 AM
      Supply chains and trustwumpus2018/10/04 04:35 PM
      Supply chains and trustRobert Williams2018/10/08 06:30 PM
        Supply chains and trustMaynard Handley2018/10/08 07:21 PM
          Supply chains and trustRobert Williams2018/10/09 09:03 AM
            Supply chains and trustRobert Williams2018/10/09 09:08 AM
              Supply chains and trustMaynard Handley2018/10/09 09:27 AM
    Supply chains and trustdmcq2018/10/04 10:31 AM
      Supply chains and trustGabriele Svelto2018/10/04 11:32 AM
        Supply chains and trustBrett2018/10/04 11:52 AM
          Supply chains and trustMaynard Handley2018/10/04 12:08 PM
            Supply chains and trustAdrian2018/10/04 12:36 PM
              Supply chains and trustMaynard Handley2018/10/04 12:51 PM
              Supply chains and trustRob Thorpe2018/10/04 01:09 PM
            Supply chains and trustDavid Hess2018/10/04 12:38 PM
            Supply chains and trustBrett2018/10/04 12:52 PM
          Supply chains and trustDoug S2018/10/04 01:33 PM
        Supply chains and trustDavid Hess2018/10/04 12:09 PM
      Supply chains and trustDavid Hess2018/10/04 12:03 PM
    Supply chains and trustDoug S2018/10/04 01:45 PM
      Supply chains and trustGabriele Svelto2018/10/05 01:53 AM
        Supply chains and trustdmcq2018/10/05 03:51 AM
          Supply chains and trustGabriele Svelto2018/10/05 04:34 AM
        Supply chains and trustDoug S2018/10/05 12:46 PM
          Supply chains and trustGabriele Svelto2018/10/06 02:59 PM
            Supply chains and trustDavid Hess2018/10/06 04:12 PM
    Supply chains and trustJ2018/10/04 10:24 PM
      Supply chains and trustAndrew Clough2018/10/05 06:38 AM
        Supply chains and trustDavid Hess2018/10/06 04:16 PM
        Supply chains and trustMaxwell2018/10/06 04:37 PM
    Hit job on Super Micro?Maxwell2018/10/04 10:46 PM
      Hit job on Super Micro?Brett2018/10/05 12:55 AM
        Hit job on Super Micro?David Hess2018/10/06 04:15 PM
  Supply chains and trustKevin G2018/10/04 01:47 PM
    Raptor Engineering's RaptorGabriele Svelto2018/10/05 04:42 AM
    Supply chains and trustGroo2018/10/06 06:49 AM
      Supply chains and trustDavid Kanter2018/10/06 09:04 AM
        Supply chains and trustGroo2018/10/06 03:42 PM
          Supply chains and trustDavid Kanter2018/10/06 03:46 PM
            SuperMicro boards are not made in USAAdrian2018/10/07 12:08 AM
              SuperMicro boards are not made in USAAdrian2018/10/07 12:28 AM
          Supply chains and trustjuanrga2018/10/07 07:12 AM
        Supply chains and trustDavid Hess2018/10/06 04:24 PM
      Supply chains and trustWes Felter2018/10/07 03:35 PM
  What did the BOM entry look like?Mark Roulo2018/10/04 02:21 PM
  Supply chains and trustMaynard Handley2018/10/04 04:01 PM
    Supply chains and trustdmcq2018/10/05 01:27 AM
      Here's what I think happenedDoug S2018/10/05 12:56 PM
        Here's what I think happenedBrett2018/10/05 04:17 PM
          FBI wants to be your first contactex-apple2018/10/05 04:41 PM
          Here's what I think happenedDoug S2018/10/05 10:59 PM
            Why call CIA?David Kanter2018/10/06 09:01 AM
              Why call CIA?Doug S2018/10/06 09:33 AM
                Why call CIA?David Kanter2018/10/06 03:43 PM
        Here's what I think happenedMaynard Handley2018/10/05 04:23 PM
          Here's what I think happeneddmcq2018/10/06 04:52 AM
    Supply chains and trustDavid Hess2018/10/06 04:34 PM
  Supply chains and trustGroo2018/10/06 07:01 AM
    Supply chains and trustetudiant2018/10/07 04:36 AM
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