UBUNTU-CVE-2021-3658

bluetoothd from bluez incorrectly saves adapters' Discoverable status when a device is powered down, and restores it when powered up. If a device is powered down while discoverable, it will be discoverable when powered on again. This could lead to inadvertent exposure of the bluetooth stack to physically nearby attackers.

References

Affected packages

Ubuntu:20.04:LTS / bluez

Package

Name: bluez
Purl: pkg:deb/ubuntu/bluez@5.53-0ubuntu3.4?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.53-0ubuntu3.4

Affected versions

5.*

5.50-0ubuntu4

5.51-0ubuntu1

5.51-0ubuntu2

5.52-0ubuntu1

5.52-0ubuntu2

5.53-0ubuntu1

5.53-0ubuntu2

5.53-0ubuntu3

5.53-0ubuntu3.1

5.53-0ubuntu3.2

5.53-0ubuntu3.3

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "5.53-0ubuntu3.4",
            "binary_name": "bluetooth"
        },
        {
            "binary_version": "5.53-0ubuntu3.4",
            "binary_name": "bluez"
        },
        {
            "binary_version": "5.53-0ubuntu3.4",
            "binary_name": "bluez-cups"
        },
        {
            "binary_version": "5.53-0ubuntu3.4",
            "binary_name": "bluez-hcidump"
        },
        {
            "binary_version": "5.53-0ubuntu3.4",
            "binary_name": "bluez-obexd"
        },
        {
            "binary_version": "5.53-0ubuntu3.4",
            "binary_name": "bluez-tests"
        },
        {
            "binary_version": "5.53-0ubuntu3.4",
            "binary_name": "libbluetooth-dev"
        },
        {
            "binary_version": "5.53-0ubuntu3.4",
            "binary_name": "libbluetooth3"
        }
    ]
}