CVE-2021-0631 Explained : Impact and Mitigation

A vulnerability has been discovered in the wifi driver of certain MediaTek processors, potentially leading to a remote denial of service attack without requiring user interaction.

Understanding CVE-2021-0631

This CVE involves a missing bounds check in the wifi driver of specific MediaTek processors, making them susceptible to a remote denial of service exploit.

What is CVE-2021-0631?

The vulnerability in the wifi driver of MediaTek processors could result in a system crash, enabling a remote attacker to trigger a denial of service attack without needing additional execution privileges or user interaction.

The Impact of CVE-2021-0631

Exploitation of this vulnerability could lead to a system crash, disrupting normal operations and potentially causing service unavailability.

Technical Details of CVE-2021-0631

This section provides technical insights into the vulnerability.

Vulnerability Description

The vulnerability arises from a missing bounds check in the wifi driver, which could be exploited remotely for a denial of service attack.

Affected Systems and Versions

The vulnerability affects MediaTek processors including MT6761, MT6762, MT6765, and several others running Android versions 8.1, 9.0, 10.0, and 11.0.

Exploitation Mechanism

An attacker could exploit the missing bounds check in the wifi driver remotely, causing a system crash and denying service to legitimate users.

Mitigation and Prevention

Protective measures against CVE-2021-0631 are crucial to safeguard vulnerable systems.

Immediate Steps to Take

Apply the patch with Patch ID: ALPS05551435 to address the vulnerability promptly.

Long-Term Security Practices

Regularly update systems and software to mitigate potential security risks and stay protected against emerging threats.

Patching and Updates

Stay informed about security updates from MediaTek and apply patches promptly to secure the affected systems.