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cvelistMitreCVELIST:CVE-2021-34147
HistorySep 07, 2021 - 6:26 a.m.

CVE-2021-34147

2021-09-0706:26:51
mitre
www.cve.org
5
cypress wiced bt
cyw20735b1
bluetooth classic
vulnerability
resource exhaustion
crash
lmp timing accuracy
reconnection

EPSS

0.001

Percentile

29.0%

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.

EPSS

0.001

Percentile

29.0%