USN-4311-1: BlueZ vulnerabilities

Releases

• Ubuntu 19.10
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

Packages

• 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

• bluez - 5.48-0ubuntu3.4
• libbluetooth3 - 5.48-0ubuntu3.4

Ubuntu 16.04

• bluez - 5.37-0ubuntu5.3
• libbluetooth3 - 5.37-0ubuntu5.3

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

References

• CVE-2016-7837
• CVE-2020-0556