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Ubuntu Security Notice USN-1753-1
February 27, 2013

dbus-glib vulnerability

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

• Ubuntu 12.10
• Ubuntu 12.04 LTS
• Ubuntu 11.10
• Ubuntu 10.04 LTS

Summary:

An attacker could send crafted input to applications using DBus-GLib and
possibly escalate privileges.

Software Description:

• dbus-glib: simple interprocess messaging system

Details:

Sebastian Krahmer and Bastien Nocera discovered that DBus-GLib did not
properly validate the message sender when the "NameOwnerChanged" signal was
received. A local attacker could possibly use this issue to escalate their
privileges.

Update instructions:

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

Ubuntu 12.10:
libdbus-glib-1-2 0.100-1ubuntu0.1

Ubuntu 12.04 LTS:
libdbus-glib-1-2 0.98-1ubuntu1.1

Ubuntu 11.10:
libdbus-glib-1-2 0.94-4ubuntu0.1

Ubuntu 10.04 LTS:
libdbus-glib-1-2 0.84-1ubuntu0.3

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

References:
http://www.ubuntu.com/usn/usn-1753-1
CVE-2013-0292

Package Information:
https://launchpad.net/ubuntu/+source/dbus-glib/0.100-1ubuntu0.1
https://launchpad.net/ubuntu/+source/dbus-glib/0.98-1ubuntu1.1
https://launchpad.net/ubuntu/+source/dbus-glib/0.94-4ubuntu0.1
https://launchpad.net/ubuntu/+source/dbus-glib/0.84-1ubuntu0.3

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