UEFIs booting Windows and Linux devices can be hacked by malicious logo images.

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.

  • gnutrino@programming.devEnglish
    161·
    1 year ago

    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.worldEnglish
      18·
      1 year 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.eeEnglish
      6·
      1 year 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.