The solution to this problem is to reverse the commit 52c18be9e99dabe295321153fda7fce9f76647ac in the main Qemu archive.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/697197 Title: Empty password allows access to VNC in libvirt -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs