Microsoft’s Bitlocker & TPM encryption combo defeated with a $10 Raspberry Pi::The point of Microsoft’s Bitlocker security feature is to protect personal data stored locally on devices and particularly when those devices are lost or otherwise physically compromised. With Bi

  • Godort@lemm.ee
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    5 months ago

    It should be noted that this attack was demonstrated on a nearly 10 year old laptop that has the TPM traces exposed on the motherboard.

    Most TPMs nowadays are built into the CPU which does not leave them vulnerable to this type of attack.

    • cheese_greater@lemmy.world
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      5 months ago

      Its definitely sort or misleading but MS needs to really have its feet held to the fire when it comes to these things. It sort of pushes the narrative in the correct direction which is towards privacy AND security, not a half-ass balance where one or the other or both is compromised or is an illusion altogether

      The Outlook stuff has demonstrated how fundamentally irresponsible and unserious they are about their obligation to secure and regulate their own systems, they need all the bad press they can get so they are compelled to do betwr

      • Shadow@lemmy.ca
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        5 months ago

        Because MS designed Lenovo motherboard for them and told them where to put the tpm debug pins? I think you’re casting blame at the wrong vendor here.

        Doesn’t matter how good the software is if the hardware vendor fucks up like that.

        • Natanael@slrpnk.net
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          5 months ago

          They’re heavily involved with the development of the spec and guidance to OEMs on how to implement it

    • f4f4f4f4f4f4f4f4@lemmy.world
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      5 months ago

      I get your joke, but it’s even cheaper than a “Raspberry Pi”. Pi Pico, one RP2040 chip, that’s basically RPi’s new version of a Teensy. I just installed one in my GameCube to defeat its “BIOS” and boot from micro SD card :P

      • andrewth09@lemmy.world
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        5 months ago

        I just installed one in my GameCube to defeat its “BIOS” and boot from micro SD card :P

        Coolest thing I heard all day. Didn’t know that was a thing.

  • circuscritic@lemmy.ca
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    5 months ago

    $10… not really in video. He had a custom PCB made so the pogo pins were on the board, all in one.

    Honestly, pretty awesome. Although as noted, this is for older boards without TPM integration in CPU.

    It can also be done with a logic analyzer.

    • n2burns@lemmy.ca
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      5 months ago

      Isn’t the whole point of BitLocker protection from direct access? When a computer is turned off, encryption should keep the data safe. Also when a computer is turned off, basically no remote vector is going to work. AFAIK, when the computer is on, the drive is mounted and BitLocker provides no additional protection over an unencrypted drive.

        • ryannathans@aussie.zone
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          5 months ago

          Veracrypt drive encryption does not have the same problem, it would be secure even with physical access

            • ryannathans@aussie.zone
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              5 months ago

              Yeah, it’s safe because of no TPM usage. You can boot from an encrypted drive, it’ll prompt for the key instead of auto loading from vulnerable hardware

              • Natanael@slrpnk.net
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                5 months ago

                Bitlocker supports the same usecase, but everybody wants that automatic boot feature so…

                It also lets you store a secondary key on a server and require the computer to be on trusted networks to be able to retrieve it to boot, but I’ve never ever heard of anybody using that

    • Godort@lemm.ee
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      5 months ago

      Correct. However, if you have a way to run a PowerShell command as an administrator, you can run a single cmdlet to get access to the bitlocker recovery key.

  • trackcharlie@lemmynsfw.com
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    5 months ago

    The concept and implementation of TPM use has been a joke since inception.

    veracrypt or luks; bitlocker is a total joke.

  • stevedidwhat_infosec
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    5 months ago

    Unsurprised. Physical security seems to be a lot tougher for the industry to “nail”

    Just look at this UEFI boot fail vuln/exploit. Crazy.

  • Optional@lemmy.world
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    5 months ago

    Hey - hey member that time when Truecrypt was like, “Peace, we out. Use bitlocker. lol”

    When’s the new Truecrypt coming out? Yeah yeah Veracrypt, I know. It’s cool, its just not. I dunno.

    • Natanael@slrpnk.net
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      5 months ago

      Bitlocker’s threat model is physical access, though. And it’s 50% of TPM’s threat model too.

      • LainTrain@lemmy.dbzer0.com
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        5 months ago

        Yeah which is why no one cares about either. The threat vector is usually not discussed and mostly ignored by non state-level actors in practice.

        I do agree that it’s fascinating. My master’s degree thesis was on sourcing trust and eliminating various evil maid type attacks, including supply side targeted poisoned hardware aimed at state level.