this post was submitted on 07 Dec 2023
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181
Just about every Windows and Linux device vulnerable to new LogoFAIL firmware attack (arstechnica.com)
submitted 11 months ago by L4s@lemmy.world to c/technology@lemmy.world
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Just about every Windows and Linux device vulnerable to new LogoFAIL firmware attack::UEFIs booting Windows and Linux devices can be hacked by malicious logo images.

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[–] gnutrino@programming.dev 13 points 11 months ago (2 children)

If you have access to directly write to arbitrary disk locations you already have full control. Why bother with overwriting the logo file with a malicious payload if you can just overwrite the actual kernel...

[–] surewhynotlem@lemmy.world 17 points 11 months ago

Because this can persist beyond an OS rebuild or patch. You infect the BIOS and you're on the device until the BIOS is free reflashed. And who ever does that?

[–] ClemaX@lemm.ee 6 points 11 months ago

Due to Secure Boot (if it actually enabled since there are some bogous implementations) this can be prevented. If I understand it correctly, LogoFAIL bypasses this security measure and enables loading unsigned code.