Hi,

On Sun, 19 Oct 2014, Michael Tokarev wrote:
> This configuration is unsupported, until proper security model is implemented
> upstream.

>From what I have read elsewhere, it looks like that you need to whitelist
the bridges on which qemu-system-helper can attach new devices (via
/etc/qemu/bridge.conf).

This seems like a reasonable balance if the whitelist is empty by default?

Or if the whitelist only includes the "virbr0" that libvirt setups
for basic NAT networking in VM...

Note that GNOME Boxes for example needs this helper to work in order
to provide a sane networking setup where the host can access the VM:
https://bugzilla.gnome.org/show_bug.cgi?id=677688

At the very least, you could document how users can opt to re-enable
permanently the setuid bit with "dpkg-statoverride" (and ensure that
the package doesn't mess with this).

Please reconsider your position on this topic.

Cheers,
-- 
Raphaël Hertzog ◈ Debian Developer

Support Debian LTS: http://www.freexian.com/services/debian-lts.html
Learn to master Debian: http://debian-handbook.info/get/


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