this post was submitted on 07 Feb 2024
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When using an external TPM. Which next to no one does.
Watch the video. It just means external to the CPU, not an external device.
They demo the attack on a Lenovo laptop in the first minute of the video.
Edit: nm I just realized that was a 10 year old laptop and they're in all the modern procs. I'm a lot less impressed now.
Sounds like intel has external and amd internal with their ftpm?
Many systems still use discrete tpms. Just because the CPU has a virtual tpm function doesn’t mean it’s used
fTPM has a bug, don't know if it's fixed
https://www.techspot.com/news/93684-amd-promises-fix-ftpm-issue-causes-stuttering-freezes.html
Veracrypt also doesn't recommend using encryption that relies on TPMs
https://veracrypt.eu/en/FAQ.html
Let's assume the attackers were law enforcers
This has been fixed for a while now
It's fairly common in business devices before 8th gen Intel.
The MSI mini-PC-s for office/business use have separate TPM modules on their mobos. I wouldn't be surprised if other mfg-s do this too.