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Gentoo Linux Security Advisory                           GLSA 202003-49
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                                           https://security.gentoo.org/
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 Severity: High
    Title: BlueZ: Security bypass
     Date: March 25, 2020
     Bugs: #712292
       ID: 202003-49

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Synopsis
========

A vulnerability in BlueZ might allow remote attackers to bypass
security restrictions.

Background
==========

Set of tools to manage Bluetooth devices for Linux.

Affected packages
=================

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  net-wireless/bluez            < 5.54                     >= 5.54

Description
===========

It was discovered that the HID and HOGP profiles implementations in
BlueZ did not specifically require bonding between the device and the
host.

Impact
======

A remote attacker with adjacent access could impersonate an existing
HID device, cause a Denial of Service condition or escalate privileges.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All BlueZ users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-wireless/bluez-5.54"

References
==========

[ 1 ] CVE-2020-0556
      https://nvd.nist.gov/vuln/detail/CVE-2020-0556

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/202003-49

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2020 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5