CVE-2022-20021 Explained : Impact and Mitigation

This CVE-2022-20021 impacts a wide range of MediaTek devices running Android 10.0 and 11.0. Read on to understand the implications, impact, and mitigation strategies.

Understanding CVE-2022-20021

This vulnerability in Bluetooth could result in a denial of service attack on affected devices without the need for user interaction.

What is CVE-2022-20021?

The vulnerability lies in how Bluetooth handles the reception of multiple LMP_host_connection_req, potentially leading to a remote denial of service attack.

The Impact of CVE-2022-20021

The impact of this vulnerability is the ability for remote attackers to crash applications, specifically targeting Bluetooth, without requiring additional execution privileges or user interaction.

Technical Details of CVE-2022-20021

Let's delve deeper into the technical aspects of this CVE.

Vulnerability Description

The vulnerability arises from the inadequate handling of multiple LMP_host_connection_req, leaving devices vulnerable to crashing and denial of service attacks.

Affected Systems and Versions

Devices powered by MediaTek processors such as MT6580, MT6630, MT6735, and more, running Android 10.0 and 11.0 are affected by this security issue.

Exploitation Mechanism

The exploitation of this vulnerability does not require user interaction, making it easier for threat actors to launch attacks remotely.

Mitigation and Prevention

Discover the steps to mitigate the risks associated with CVE-2022-20021.

Immediate Steps to Take

It is crucial to apply the provided patch ID: ALPS06198513 to address this vulnerability promptly.

Long-Term Security Practices

Apart from immediate patching, adopting robust security practices and maintaining up-to-date systems can help prevent similar vulnerabilities.

Patching and Updates

Regularly check for security updates from MediaTek for your devices to stay protected against potential threats.