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CVE-2021-34147

Published: 7 September 2021

The Bluetooth Classic implementation in the Cypress WICED BT stack through 2.9.0 for CYW20735B1 does not properly handle the reception of a malformed LMP timing accuracy response followed by multiple reconnections to the link slave, allowing attackers to exhaust device BT resources and eventually trigger a crash via multiple attempts of sending a crafted LMP timing accuracy response followed by a sudden reconnection with a random BDAddress.

Priority

Medium

CVSS 3 base score: 6.5

Status

Package Release Status
bluez-firmware
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

jammy Needs triage

kinetic Needs triage

trusty Ignored
(out of standard support)
upstream Needs triage

xenial Ignored
(out of standard support)