dbus - security update

Several vulnerabilities have been discovered in dbus, an asynchronous
inter-process communication system. The Common Vulnerabilities and
Exposures project identifies the following problems:

• CVE-2014-3477
  Alban Crequy at Collabora Ltd. discovered that dbus-daemon sends an
  AccessDenied error to the service instead of a client when the
  client is prohibited from accessing the service. A local attacker
  could use this flaw to cause a bus-activated service that is not
  currently running to attempt to start, and fail, denying other users
  access to this service.
• CVE-2014-3532
  Alban Crequy at Collabora Ltd. discovered a bug in dbus-daemon’s
  support for file descriptor passing. A malicious process could force
  system services or user applications to be disconnected from the
  D-Bus system by sending them a message containing a file descriptor,
  leading to a denial of service.
• CVE-2014-3533
  Alban Crequy at Collabora Ltd. and Alejandro MartĂ­nez SuĂĄrez
  discovered that a malicious process could force services to be
  disconnected from the D-Bus system by causing dbus-daemon to attempt
  to forward invalid file descriptors to a victim process, leading to
  a denial of service.

For the stable distribution (wheezy), these problems have been fixed in
version 1.6.8-1+deb7u3.

For the unstable distribution (sid), these problems have been fixed in
version 1.8.6-1.

We recommend that you upgrade your dbus packages.