CVE-2021-34147
Medium
Description
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.
SeverityMedium
CVSS6.5
Exploit probability—
ProductCypress Wireless Internet Connectivity For Embedded Devices
PublishedSep 7, 2021
First seenSep 7, 2021
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cypress wireless_internet_connectivity_for_embedded_devices | v ≤ 2.9.0 | — |
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