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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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Just about every Windows and Linux device vulnerable to new LogoFAIL firmware attack (arstechnica.com)

submitted 11 months ago by Chewy7324@discuss.tchncs.de to c/linux@lemmy.ml

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[–] _edge@discuss.tchncs.de 163 points 11 months ago (27 children)

There are several ways to exploit LogoFAIL. Remote attacks work by first exploiting an unpatched vulnerability in a browser, media player, or other app and using the administrative control gained to replace the legitimate logo image processed early in the boot process with an identical-looking one that exploits a parser flaw. The other way is to gain brief access to a vulnerable device while it’s unlocked and replace the legitimate image file with a malicious one.

In short, the adversary requires elevated access to replace a file on the EFI partition. In this case, you should consider the machine compromised with or without this flaw.

You weren't hoping that Secure Boot saves your ass, were you?

[–] plinky@hexbear.net 18 points 11 months ago (1 children)

The worst part it persists through reinstalls (if i understood correctly)

[–] _edge@discuss.tchncs.de 11 points 11 months ago (1 children)

This is also my understanding, at least of you keep the EFI partition.

[–] Bitrot@lemmy.sdf.org 24 points 11 months ago* (last edited 11 months ago) (1 children)

It can outlast those too.

In many of these cases, however, it’s still possible to run a software tool freely available from the IBV or device vendor website that reflashes the firmware from the OS. To pass security checks, the tool installs the same cryptographically signed UEFI firmware already in use, with only the logo image, which doesn’t require a valid digital signature, changed.

[–] Bipta@kbin.social 10 points 11 months ago (1 children)

Boy do I love the future.

[–] Bitrot@lemmy.sdf.org 12 points 11 months ago

It's reminiscent of boot sector viruses in the DOS days.

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