#VU58562 Buffer overflow in CSR8510 A10 and CSR8811 A12 - CVE-2021-35093

Vulnerability identifier: #VU58562

Vulnerability risk: Low

CVSSv4.0: 4.9 [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-2021-35093

CWE-ID: CWE-119

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
CSR8510 A10
Hardware solutions / Firmware
CSR8811 A12
Hardware solutions / Firmware

Vendor: Qualcomm

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in Bluetooth Controller Firmware. A remote attacker on the local network can trigger memory corruption and cause a denial of service condition on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

CSR8510 A10: All versions

CSR8811 A12: All versions

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External links
https://www.qualcomm.com/company/product-security/bulletins/december-2021-bulletin

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.