CVE-2022-20023 : Security Advisory and Response
Learn about CVE-2022-20023, a vulnerability in Bluetooth on various MediaTek devices causing denial of service. Explore impact, affected systems, mitigation, and prevention steps.
A vulnerability has been identified in Bluetooth on various MediaTek devices that could potentially result in a remote denial of service attack. This CVE-2022-20023 vulnerability does not require user interaction for exploitation.
Understanding CVE-2022-20023
This vulnerability affects a wide range of MediaTek device models running Android 10.0 and 11.0. It is related to a specific issue in Bluetooth communication that can lead to a denial of service condition.
What is CVE-2022-20023?
The CVE-2022-20023 vulnerability involves a scenario where a device is flooded with LMP_AU_rand packets via Bluetooth, causing an application crash and potentially leading to a denial of service attack on the Bluetooth functionality of the device.
The Impact of CVE-2022-20023
The impact of this vulnerability is the remote denial of service of Bluetooth on affected MediaTek devices. Attackers can exploit this issue without requiring any additional execution privileges or user interaction.
Technical Details of CVE-2022-20023
Vulnerability Description
The vulnerability arises from the susceptibility of MediaTek devices to crashing when overwhelmed with LMP_AU_rand packets via Bluetooth, potentially causing a denial of service condition.
Affected Systems and Versions
The affected systems include a wide array of MediaTek device models that are powered by Android 10.0 and 11.0.
Exploitation Mechanism
Exploiting CVE-2022-20023 involves flooding a targeted device with LMP_AU_rand packets via Bluetooth, triggering an application crash and potentially disrupting Bluetooth service.
Mitigation and Prevention
Immediate Steps to Take
To mitigate the risk associated with CVE-2022-20023, users are advised to apply patches provided by MediaTek promptly. It is crucial to keep the Bluetooth functionality disabled when not in use to prevent potential attacks.
Long-Term Security Practices
Adopting robust security practices, such as regularly updating device firmware and implementing security best practices, can help prevent exploitation of known vulnerabilities like CVE-2022-20023.
Patching and Updates
Users should ensure that their MediaTek devices are updated with the latest security patches to address CVE-2022-20023 and other potential vulnerabilities.