[Qemu-devel] [Bug 697197] Re: Empty password allows access to VNC in libvirt

[Neil Wilson <neil@aldur.co.uk>]

The solution to this problem is to reverse the commit
52c18be9e99dabe295321153fda7fce9f76647ac in the main Qemu archive.

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https://bugs.launchpad.net/bugs/697197

Title:
  Empty password allows access to VNC in libvirt

Status in libvirt virtualization API:
  Unknown
Status in QEMU:
  New
Status in qemu-kvm:
  Unknown
Status in “libvirt” package in Ubuntu:
  Invalid
Status in “qemu-kvm” package in Ubuntu:
  Confirmed

Bug description:
  The help in the /etc/libvirt/qemu.conf states

  "To allow access without passwords, leave this commented out. An empty
  string will still enable passwords, but be rejected by QEMU
  effectively preventing any use of VNC."

  yet setting:

  vnc_password=""

  allows access to the vnc console without any password prompt just as
  if it is hashed out completely.

  ProblemType: Bug
  DistroRelease: Ubuntu 10.10
  Package: libvirt-bin 0.8.3-1ubuntu14
  ProcVersionSignature: Ubuntu 2.6.35-24.42-server 2.6.35.8
  Uname: Linux 2.6.35-24-server x86_64
  Architecture: amd64
  Date: Tue Jan  4 12:18:35 2011
  InstallationMedia: Ubuntu-Server 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.2)
  ProcEnviron:
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: libvirt