this post was submitted on 15 Jul 2026
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245
Microsoft’s Secure Boot has been broken for a decade and no one noticed until now (www.welivesecurity.com)
submitted 2 days ago by beep@piefed.world to c/technology@lemmy.world
62 comments fedilink hide all child comments
 

cross-posted from: https://piefed.world/c/tech/p/1263218/microsofts-secure-boot-has-been-broken-for-a-decade-and-no-one-noticed-until-now

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[–] defaultusername@lemmy.dbzer0.com 2 points 9 hours ago* (last edited 9 hours ago) (1 children)

It's not memory, but rather physical fuses that have been blown on the die itself, similar to the Xbox 360's downgrade protection fuses and CPU key. Much like the Xbox 360, the only way to bypass it would be to do something like a reset glitch hack to glitch the state of the CPU right as it tries to read the state of the fuses and bypass that check, and that would require a specific modchip for every individual device. Another option would be to replace the SoC with one that does not have that protection enabled to begin with.

[–] 01189998819991197253@infosec.pub 2 points 8 hours ago (1 children)

I was unaware of this. Super interesting, and disturbing honesty.

[–] defaultusername@lemmy.dbzer0.com 1 points 8 hours ago (1 children)

Yeah. Best to look out for devices that don't have this restriction. Not 100% sure if the Fairphone and Shiftphone have this, but I'm sure if you ask them, they'll tell you.

[–] Axolotl_cpp@feddit.it 1 points 4 hours ago* (last edited 4 hours ago) (1 children)

I think the nothing phone does not have it, at least, i doubt because their bootloader is not locked IIRC

[–] defaultusername@lemmy.dbzer0.com 2 points 4 hours ago (1 children)

Having an unlockable bootloader is a separate thing from being able to replace the primary bootloader entirely.

[–] Axolotl_cpp@feddit.it 1 points 4 hours ago

My bad, i misunderstood