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Researchers discover potentially catastrophic exploit present in AMD chips for decades (www.engadget.com)

submitted 3 months ago by some_guy@lemmy.sdf.org to c/technology@lemmy.world

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Intel breathes a sigh of relief as the spotlight moves off of them for a beat.

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[–] jet@hackertalks.com 33 points 3 months ago* (last edited 3 months ago) (1 children)

Sinkclose

Impacted systems: https://www.amd.com/en/resources/product-security/bulletin/amd-sb-7014.html

Original presentation details. https://ioactive.com/event/def-con-talk-amd-sinkclose-universal-ring-2-privilege-escalation/

This is a big f****** deal. If you get kernel access to a system, which is not uncommon, you can install a persistent back door that subverts the rest of the system forever. That's huge. It does not require physical access, requires kernel access.. different things

Steam games that ask for admin privileges, a USB stick that boots, normal virus infection that can never be uninstalled,. persistent RAT....

[–] flying_sheep@lemmy.ml 17 points 3 months ago

Negative rings are a horrible proprietary liability.

That's been clear from their inception, and this changes nothing.