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On Thu, Aug 25, 2016 at 12:56:15PM +0200, Alex wrote:
> On 08/25/2016 12:53 PM, Arqwer wrote:
> > Command qvm-run '$dispvm' xterm if called from an appVM will run
> > xterm in a new dispVM. If attacker gained access to an appvm, he
> > possibly can run script, that will create thousands of new dispVMs
> > and freeze my computer. I don't like this. May be it's better to
> > disable this functionality by default?
> > 
> I see your point, but I'd rather appreciate a limit on the number of
> dispVM that can be launched (e.g. per hour/appvm?) before some
> confirmation from dom0 is needed to open any more. This way actual
> functionality is not broken nor reverted, and the denial of service
> scenario is prevented.

In fact the number of DispVMs is already limited - by available RAM.
Further attempts will simply fail.

- -- 
Best Regards,
Marek Marczykowski-Górecki
Invisible Things Lab
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
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