Re: virtual box and video isolation

Hi Tim,

I was wondering how the virtualbox implementation on top of

genode/nova fares against this type of attack: https://hsmr.cc/palinopsia/

is 3d acceleration used? is there strong isolation of the video memory?

our version of VirtualBox does not use/support hardware-accelerated graphics. We needed a GPU driver first.

Thanks for the link. It is important to keep such attack vectors in mind. It also bears the question: Does your BIOS clear all physical memory at boot time? If not, couldn't an attacker with physical access to a machine (i.e., a stolen laptop that may still be locked with a screensaver) reset the machine, boot a custom OS from a USB stick, and scan the memory for credentials? What would be a viable defense against such a scenario?

Cheers Norman