CVE-2021-0663 : Security Advisory and Response

A vulnerability affecting various MediaTek processor versions could allow an attacker to locally escalate privileges without user interaction, potentially leading to system execution privileges.

Understanding CVE-2021-0663

This CVE involves an out-of-bounds write issue in the audio DSP component, posing a risk of privilege escalation without the need for user interaction.

What is CVE-2021-0663?

The CVE-2021-0663 vulnerability in certain MediaTek processors could be exploited by malicious actors to achieve local privilege escalation, necessitating system execution privileges.

The Impact of CVE-2021-0663

If successfully exploited, this vulnerability could enable threat actors to elevate their privileges locally, potentially leading to more severe security breaches.

Technical Details of CVE-2021-0663

This section delves into the specifics of the vulnerability, including affected systems and the method of exploitation.

Vulnerability Description

The issue stems from an incorrect bounds check in the audio DSP, paving the way for an out-of-bounds write scenario that can be leveraged for privilege escalation.

Affected Systems and Versions

Products impacted include MT6779, MT6781, MT6785, MT6853, MT6853T, MT6873, MT6875, MT6877, MT6883, MT6885, MT6889, MT6891, MT6893, and MT8797 running Android 9.0, 10.0, and 11.0.

Exploitation Mechanism

Exploiting this vulnerability does not require user interaction, making it easier for malicious actors to locally escalate privileges and potentially gain system execution rights.

Mitigation and Prevention

Discover the steps to address and prevent possible exploitation of CVE-2021-0663 below.

Immediate Steps to Take

Immediate actions can include applying available patches, following security best practices, and monitoring for signs of exploitation.

Long-Term Security Practices

Implementing robust security measures, such as network segmentation and access controls, can help mitigate risks associated with privilege escalation vulnerabilities.

Patching and Updates

Regularly updating systems, applying security patches promptly, and maintaining awareness of security advisories are crucial to safeguard against known vulnerabilities.