1. Ubuntu Security Notices
  2. USN-6540-1

USN-6540-1: BlueZ vulnerability

Publication date

7 December 2023

Overview

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

Releases

Packages

  • 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.

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

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
23.10 mantic bluez –  5.68-0ubuntu1.1
libbluetooth3 –  5.68-0ubuntu1.1
23.04 lunar bluez –  5.66-0ubuntu1.1
libbluetooth3 –  5.66-0ubuntu1.1
22.04 jammy bluez –  5.64-0ubuntu1.1
libbluetooth3 –  5.64-0ubuntu1.1
20.04 focal bluez –  5.53-0ubuntu3.7
libbluetooth3 –  5.53-0ubuntu3.7
18.04 bionic bluez –  5.48-0ubuntu3.9+esm1  
libbluetooth3 –  5.48-0ubuntu3.9+esm1  
16.04 xenial bluez –  5.37-0ubuntu5.3+esm3  
libbluetooth3 –  5.37-0ubuntu5.3+esm3  

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References

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