#VU56326 Input validation error in Cypress Semiconductor Corporation products - CVE-2021-34148
Published: September 6, 2021
Vulnerability identifier: #VU56326
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-34148
CWE-ID: CWE-20
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerable software:
WICED BT stack
CYW920735Q60EVB
CYW20735B1
WICED BT stack
CYW920735Q60EVB
CYW20735B1
Software vendor:
Cypress Semiconductor Corporation
Cypress Semiconductor Corporation
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the Bluetooth Classic implementation does not properly handle the reception of LMP_max_slot with a higher ACL Length after completion of the LMP setup procedure. A remote attacker in radio range can send a specially crafted LMP packet and perform a denial of service (DoS) attack.
Remediation
Install updates from vendor's website.