logoalt Hacker News

tptacek • today at 1:51 AM • 4 replies • view on HN

It's very much a Firecracker thing. KVM is part of the Firecracker stack, and getting code execution behind the jailer is still effectively game-over; it's just a somewhat higher degree-of-difficulty game-over. It's a drastically worse place than you would have been last year, when there wasn't a known plausible way to get even that far.

This is a really good bug and nobody should downplay it.


Replies

roughly • today at 4:37 AM

Huh, so the assertion here that this is a break past the KVM boundary broadly, then?

Also - re: the jailer, do you have more info on that being popped?

catlifeonmars • today at 4:12 AM

GP said

> They ran it without a jailer

And you said

> getting code execution behind the jailer is still effectively game-over

So I’m really confused, which is it?

➕ show 1 reply
sscaryterry • today at 12:00 PM

[flagged]

zobzu • today at 5:51 AM

sounds like saying it's a Ubuntu thing because you can install firecracker and use kvm to me.

the truth is there plenty more kvm escapes that will be found.