USN-4311-1: BlueZ vulnerabilities

30 March 2020

bluez vulnerabilities

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

  • Ubuntu 19.10
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS

Summary

Several security issues were fixed in BlueZ.

Software Description

  • bluez - Bluetooth tools and daemons

Details

It was discovered that BlueZ incorrectly handled bonding HID and HOGP devices. A local attacker could possibly use this issue to impersonate non-bonded devices. (CVE-2020-0556)

It was discovered that BlueZ incorrectly handled certain commands. A local attacker could use this issue to cause BlueZ to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS. (CVE-2016-7837)

Update instructions

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

Ubuntu 19.10
bluez - 5.50-0ubuntu5.1
libbluetooth3 - 5.50-0ubuntu5.1
Ubuntu 18.04 LTS
bluez - 5.48-0ubuntu3.4
libbluetooth3 - 5.48-0ubuntu3.4
Ubuntu 16.04 LTS
bluez - 5.37-0ubuntu5.3
libbluetooth3 - 5.37-0ubuntu5.3

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References