Re:You cannot cURL under pressure
by Nextgrid on Saturday October 12, 2019 @11:08AM
(#21233718)
Just FYI, there's a way to get to the QEMU console with a certain keyboard shortcut. There could be potential for mischief (if you are logging the sessions look at the one that ended just now with "too much data written to the terminal", that was me trying to attach the host's /etc/passwd as a raw disk image to the VM).
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Heh, I was just trying to do the same:
Ben: you can fix this by adding -monitor none to your qemu command line.
Even with that disabled I still wouldn't trust it (QEMU devs didn't originally plan for its stdin to be attacker-controlled, so there could be subtle bugs even with monitor disabled - remember the GRUB bug where you could bypass the password with specific keystrokes). I would've personally made it to simulate a serial port to the guest and the browser-based console being connected to that.