The remote host is missing an update to network-manager-applet announced via advisory USN-727-1.
Details follow:
It was discovered that network-manager-applet did not properly enforce permissions when responding to dbus requests. A local user could perform dbus queries to view other users' network connection passwords and pre-shared keys. (CVE-2009-0365)
It was discovered that network-manager-applet did not properly enforce permissions when responding to dbus modify and delete requests. A local user could use dbus to modify or delete other users' network connections. This issue only applied to Ubuntu 8.10. (CVE-2009-0578)
Solution: The problem can be corrected by upgrading your system to the following package versions: