Pulse of Truth

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Cyber Security news and links to cyber security stories that could make you go hmmm. The content is exactly as it is consumed through RSS feeds and wont be edited (except for the occasional encoding errors).

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krogoth@infosec.pub

‘Sinkclose’ Flaw in Hundreds of Millions of AMD Chips Allows Deep, Virtually Unfixable Infections (www.wired.com)

submitted 3 months ago by lemmydev2@infosec.pub to c/pulse_of_truth@infosec.pub

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Researchers warn that a bug in AMD’s chips would allow attackers to root into some of the most privileged portions of a computer—and that it has persisted in the company’s processors for decades.

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[–] mrvictory1@lemmy.world 9 points 3 months ago (1 children)

tldr: this exploit allows someone with kernel level access to reach system management mode.

[–] 7355608@lemmy.world 4 points 3 months ago (1 children)

I wouldn't call myself a computer science expert, but if you have kernel level access can't you already reach system management mode? Or am I way off the mark here?

[–] mrvictory1@lemmy.world 0 points 3 months ago

User level: Ring 3. Kernel level: Ring 0. This is the highest level an OS is supposed to access. SMM: Ring -2. Here is a post about accessing SMM if you are interested (scroll down to HP daystarter) https://cohost.org/cathoderaydude/post/1311259-hell-never-ends-on-x

[–] j4k3@lemmy.world 1 points 3 months ago

Intel: OPEN,,, THE FOLDER!!!

THROW ALL THE DIRT AT THE COMPETITION!!!

...

shit

WHAT ARE YOU WAITING FOR PEON?!!

The computer just crashed.