USN-1138-2: NetworkManager and ModemManager update

27 May 2011

network-manager, modemmanger update

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 10.04 LTS
  • Ubuntu 8.04 LTS


An attacker could send crafted input to NetworkManager and ModemManager and cause them to crash.

Software Description

  • modemmanager - Modem connection manager
  • network-manager - Network connection manager


USN-1138-1 fixed a vulnerability in DBus-GLib. NetworkManager and ModemManager required rebuilding against the updated DBus-GLib to incorporate the changes.

Original advisory details:

It was discovered that DBus-GLib did not properly verify the access flag of exported GObject properties under certain circumstances. A local attacker could exploit this to bypass intended access restrictions or possibly cause a denial of service.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 10.04 LTS
libnm-glib2 - 0.8-0ubuntu3.2
modemmanager - 0.3-0ubuntu2.2
Ubuntu 8.04 LTS
libnm-glib0 - 0.6.6-0ubuntu5.8.04.3

To update your system, please follow these instructions:

After a standard system update you need to reboot your computer to make all the necessary changes.