:orphan:

.. title:: CONFIG_BT_SMP_ALLOW_UNAUTH_OVERWRITE

.. kconfig:: CONFIG_BT_SMP_ALLOW_UNAUTH_OVERWRITE

CONFIG_BT_SMP_ALLOW_UNAUTH_OVERWRITE
####################################

*Allow unauthenticated pairing for paired device*

Type: ``bool``

Help
====

.. code-block:: none

    This option allows all unauthenticated pairing attempts made by the
    peer where an unauthenticated bond already exists.
    This would enable cases where an attacker could copy the peer device
    address to connect and start an unauthenticated pairing procedure
    to replace the existing bond. When this option is disabled in order
    to create a new bond the old bond has to be explicitly deleted with
    bt_unpair.

Direct dependencies
===================

\ :kconfig:`BT_SMP <CONFIG_BT_SMP>` && \ :kconfig:`BT_CONN <CONFIG_BT_CONN>` && \ :kconfig:`BT_HCI_HOST <CONFIG_BT_HCI_HOST>` && \ :kconfig:`BT_HCI <CONFIG_BT_HCI>` && \ :kconfig:`BT <CONFIG_BT>`

*(Includes any dependencies from ifs and menus.)*

Defaults
========

No defaults. Implicitly defaults to ``n``.

Kconfig definition
==================



At ``<Zephyr Subsystem>/bluetooth/host/Kconfig:340``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:44`` → ``<Zephyr Subsystem>/Kconfig:9`` → ``<Zephyr Subsystem>/bluetooth/Kconfig:174``

Menu path: (Top) → Sub Systems and OS Services → Bluetooth → Security Manager Protocol support

.. code-block:: kconfig

    config BT_SMP_ALLOW_UNAUTH_OVERWRITE
    	bool "Allow unauthenticated pairing for paired device"
    	depends on BT_SMP && BT_CONN && BT_HCI_HOST && BT_HCI && BT
    	help
    	  This option allows all unauthenticated pairing attempts made by the
    	  peer where an unauthenticated bond already exists.
    	  This would enable cases where an attacker could copy the peer device
    	  address to connect and start an unauthenticated pairing procedure
    	  to replace the existing bond. When this option is disabled in order
    	  to create a new bond the old bond has to be explicitly deleted with
    	  bt_unpair.

*(The 'depends on' condition includes propagated dependencies from ifs and menus.)*