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From: Alain Michaud <>
Cc: Alain Michaud <>
Subject: [BlueZ PATCH 0/2] HID and HOGP connections from non-bonded devices.
Date: Tue, 10 Mar 2020 02:35:14 +0000
Message-ID: <> (raw)

It was discovered that BlueZ's HID and HOGP profiles implementations
don't specifically require bonding between the device and the host.

This creates an opportunity for an malicious device to connect to a
target host to either impersonate an existing HID device without
security or to cause an SDP or GATT service discovery to take place
which would allow HID reports to be injected to the input subsystem from
a non-bonded source.

This patch series addresses the issue by ensuring that only connections
from devices that are bonded are accepted by the HID and HOGP profile

More information about the vulnerability is available here:

Alain Michaud (2):
  HOGP must only accept data from bonded devices.
  HID accepts bonded device connections only.

 profiles/input/device.c   | 23 ++++++++++++++++++++++-
 profiles/input/device.h   |  1 +
 profiles/input/hog.c      |  4 ++++
 profiles/input/input.conf |  8 ++++++++
 profiles/input/manager.c  | 13 ++++++++++++-
 5 files changed, 47 insertions(+), 2 deletions(-)


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Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-10  2:35 Alain Michaud [this message]
2020-03-10  2:35 ` [BlueZ PATCH 1/2] HOGP must only accept data from bonded devices Alain Michaud
2020-03-10  6:04   ` Luiz Augusto von Dentz
2020-03-10  2:35 ` [BlueZ PATCH 2/2] HID accepts bonded device connections only Alain Michaud
2020-03-10  6:22   ` Luiz Augusto von Dentz
2020-03-10  5:24 ` [BlueZ PATCH 0/2] HID and HOGP connections from non-bonded devices Marcel Holtmann
2020-03-10  6:27   ` Luiz Augusto von Dentz
2020-03-10 12:30     ` Alain Michaud
2020-03-10 17:12       ` Luiz Augusto von Dentz

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