Re: [Xen-devel] Why Xen 3.1.0 disable the qemu control monitor

["Daniel P. Berrange" <berrange@xxxxxxxxxx>]

On Tue, Jun 12, 2007 at 01:19:04PM +0800, Steven Hu wrote:
> Hello, all
> I found that in Xen 3.1.0 I can't press Ctrl+ALT+2 to open the console
> of qemu to do some administration. The root cause is that the value of
> "monitor_device " is "null" now. In Xen 3.0.4, the value is "vc". If
> there is no control console, how can I add a usb device to the guest
> OS. Could you guys tell me why we disable the console in Xen 3.1.0.
> thank.

It is a huge security hole if using the VNC server to access the guest
console. Anyone who can access the VNC server would be able to trivially
root the entire Dom0 host if the monitor is enabled. See CVE 2007 0998


http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0998

Dan.
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