==========================================================================
Ubuntu Security Notice USN-6540-1
December 07, 2023

bluez vulnerability
==========================================================================

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

- Ubuntu 23.10
- Ubuntu 23.04
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)

Summary:

BlueZ could be made to give a physically proximate attacker keyboard and
mouse control of a computer.

Software Description:
- bluez: Bluetooth tools and daemons

Details:

It was discovered that BlueZ did not properly restrict non-bonded devices
from injecting HID events into the input subsystem. This could allow a
physically proximate attacker to inject keystrokes and execute arbitrary
commands whilst the device is discoverable.

Update instructions:

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

Ubuntu 23.10:
   bluez                           5.68-0ubuntu1.1
   libbluetooth3                   5.68-0ubuntu1.1

Ubuntu 23.04:
   bluez                           5.66-0ubuntu1.1
   libbluetooth3                   5.66-0ubuntu1.1

Ubuntu 22.04 LTS:
   bluez                           5.64-0ubuntu1.1
   libbluetooth3                   5.64-0ubuntu1.1

Ubuntu 20.04 LTS:
   bluez                           5.53-0ubuntu3.7
   libbluetooth3                   5.53-0ubuntu3.7

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
   bluez                           5.48-0ubuntu3.9+esm1
   libbluetooth3                   5.48-0ubuntu3.9+esm1

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
   bluez                           5.37-0ubuntu5.3+esm3
   libbluetooth3                   5.37-0ubuntu5.3+esm3

In general, a standard system update will make all the necessary changes.

References:
   https://ubuntu.com/security/notices/USN-6540-1
   CVE-2023-45866

Package Information:
   https://launchpad.net/ubuntu/+source/bluez/5.68-0ubuntu1.1
   https://launchpad.net/ubuntu/+source/bluez/5.66-0ubuntu1.1
   https://launchpad.net/ubuntu/+source/bluez/5.64-0ubuntu1.1
   https://launchpad.net/ubuntu/+source/bluez/5.53-0ubuntu3.7