The MITRE CVE dictionary describes this issue as:
Vino before 2.99.4 can connect external networks contrary to the statement in the vino-preferences dialog box, which might make it easier for remote attackers to perform attacks.
Find out more about CVE-2011-1164 from the
MITRE CVE dictionary dictionary and
This issue did not affect the version of vino as shipped with Red Hat Enterprise Linux 4 or 5 as they did not include support for Universal Plug and Play (UPnP). A future update in Red Hat Enterprise Linux 6 may address this flaw. To mitigate this issue, users should ensure that confirmation is requested on each inbound connection attempt, that a password is required to connect, and that automatic network configuration is disabled. This will prevent vino from using UPnP to allow access to the VNC port, and will ensure that any connections require a password and that the user is notified on any connection attempts.