CVE-2021-33110 : What You Need to Know

This article provides an overview of CVE-2021-33110, a vulnerability impacting some Intel(R) Wireless Bluetooth(R) products and Killer(TM) Bluetooth(R) products in Windows 10 and 11 before version 22.80.

Understanding CVE-2021-33110

CVE-2021-33110 is related to improper input validation in specific Bluetooth products, potentially leading to a denial of service attack. The vulnerability affects certain versions of Intel(R) and Killer(TM) Bluetooth products on Windows 10 and 11.

What is CVE-2021-33110?

The vulnerability in CVE-2021-33110 involves inadequate input validation for Intel(R) Wireless Bluetooth(R) and Killer(TM) Bluetooth(R) products running on Windows 10 and 11 before version 22.80. This flaw could be exploited by an unauthorized user to trigger a denial of service through nearby access.

The Impact of CVE-2021-33110

If exploited, CVE-2021-33110 could allow an unauthenticated attacker to disrupt the normal operation of affected Bluetooth products, potentially leading to a denial of service condition.

Technical Details of CVE-2021-33110

The technical details of CVE-2021-33110 include:

Vulnerability Description

Improper input validation in Intel(R) Wireless Bluetooth(R) and Killer(TM) Bluetooth(R) products before version 22.80 in Windows 10 and 11 may enable an unauthenticated user to provoke denial of service via adjacent access.

Affected Systems and Versions

Systems running Intel(R) Wireless Bluetooth(R) and Killer(TM) Bluetooth(R) products in Windows 10 and 11 before version 22.80 are vulnerable to CVE-2021-33110.

Exploitation Mechanism

The vulnerability could be exploited by an unauthorized user within proximity to the affected Bluetooth devices, leveraging the lack of proper input validation to cause a denial of service attack.

Mitigation and Prevention

To address CVE-2021-33110, consider the following mitigation steps:

Immediate Steps to Take

Update affected Intel(R) and Killer(TM) Bluetooth products to version 22.80 or later.
Implement restrictions on Bluetooth device access to prevent unauthorized connections.

Long-Term Security Practices

Regularly update Bluetooth drivers and firmware to the latest versions.
Monitor for security advisories and patches from the respective vendors.

Patching and Updates

Refer to the vendor's advisory for specific patch details and instructions on securing the Bluetooth products.