CVE-2021-0666 Explained : Impact and Mitigation

This article provides detailed information about CVE-2021-0666, highlighting the vulnerability, impact, technical details, and mitigation steps.

Understanding CVE-2021-0666

CVE-2021-0666 is a vulnerability found in apusys that could result in local information disclosure with system execution privileges, without the need for user interaction.

What is CVE-2021-0666?

The vulnerability in apusys arises from an incorrect bounds check, potentially leading to an out-of-bounds read. This flaw could allow an attacker to access local information on the affected system.

The Impact of CVE-2021-0666

Due to this vulnerability, an attacker could gain unauthorized access to sensitive information stored on the device, compromising user privacy and system security.

Technical Details of CVE-2021-0666

The technical details of CVE-2021-0666 include a description of the vulnerability, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability stems from a lack of proper bounds checking in apusys, enabling an attacker to perform out-of-bounds reads and potentially access confidential data.

Affected Systems and Versions

Multiple MediaTek processors (MT6873, MT6875, etc.) running Android 11.0 are vulnerable to CVE-2021-0666, making a wide range of devices susceptible to exploitation.

Exploitation Mechanism

Exploiting this vulnerability does not require user interaction, as an attacker with knowledge of the flaw could remotely access sensitive information on a targeted device.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-0666, immediate steps should be taken to secure the affected systems and implement long-term security practices.

Immediate Steps to Take

Users are advised to apply patches promptly, follow security bulletins, and monitor official updates from MediaTek to address the vulnerability.

Long-Term Security Practices

In addition to patching, users should adopt proactive security measures, such as restricting access permissions, using security software, and staying informed about potential threats.

Patching and Updates

Regularly check for security updates, install patches provided by MediaTek, and maintain a secure system environment to prevent exploitation of known vulnerabilities.