Fairphone 4 is making hundreds of unwanted connections per day, to the same addresses. - eviltoast

So I got Fairphone 4, with /e/ os, a couple of days ago. When I connected it to my NextDNS I saw that it was trying to connect to some weird addresses, like every 5-10 minutes. I searched Internet a bit and found out that it was something with snapdragon cpu and location services. I travel a lot and use Organic Maps for navigation, so location was enabled almost all day on the phone. I turned off location services and connections stopped, and everything was fine for a couple of days.

Today I came home, checked logs in NextDNS and saw that phone started doing the same connections almost constantly even with location turned off.

Can I do something about this, other than allowing these connections? These connections are probably so numerous because they are getting blocked. If I allowed them, phone would maybe call home once in a couple of hours. I would rather not allow them, but I don’t want 20% of battery to be eaten by this.

  • MigratingtoLemmy@lemmy.world
    4·
    1 year ago

    I think unless the HAP bit is specifically set to 1, Intel ME is still active on consumer boards, just without an interface for the OS to interact with it. Not sure if someone has hacked an OEM UEFI/BIOS to interact with it, but I have seen a different MAC address from my PC on my network before, and this is without any virtual adapters. This is the only explanation I can come up with.

      • MigratingtoLemmy@lemmy.world
        2·
        1 year ago

        Thanks for your comment, much appreciated! Could you provide a source for someone who has reverse-engineered a recent version of ME and has found not much incriminating behaviour for consumer motherboards?

        Unfortunately, me_cleaner doesn’t seem to work too well with newer chips. Fortunately for me, I’m planning to purchase older computers, but for people who aren’t, this doesn’t help much (as far as I can see).

        Thank you for the idea of extracting the BIOS to enable the HAP bit. Won’t it require some serious reverse-engineering chops to find the HAP bit and enable it inside of such a binary blob? I’m not really used to Ghidra yet haha.

        If I remember correctly, ME uses its own MAC address, but the same IP address of the host. Or maybe this is no longer the case. How would it extract packets though? Won’t that require serious compute power? Or does it look for packets with specific labels identifying them?

        Thanks for letting me know about MEinfoWIN. I’ll try and find it!

          • MigratingtoLemmy@lemmy.world
            2·
            1 year ago

            Thank you, that clears it up. I’m not as informed on this matter as I used to be in the past, apologies for any assumptions I might have made.

            Thanks for the link and the link to the PR, I might try this with a PC or two in time. Do I need Intel Audio for Pipewire to work? I didn’t quite grasp the ramifications of certain parts of the firmware not working such as Audio and Sleep; would I need to find a software solution for Sleep? Also, will this affect C-states by any chance?

            That makes a lot of sense. Maybe I was looking at something different in my network at that point. Thanks again!