CVE-2021-0633 : Security Advisory and Response

A vulnerability has been identified in the display driver of multiple MediaTek products running Android 11. This flaw could allow an attacker to execute code with system privileges without requiring user interaction, potentially leading to an elevation of privilege.

Understanding CVE-2021-0633

This section provides insights into the nature and impact of the CVE-2021-0633 vulnerability.

What is CVE-2021-0633?

The CVE-2021-0633 vulnerability resides in the display driver of various MediaTek products, potentially enabling an attacker to perform an out-of-bounds write due to an incorrect bounds check. This could result in local escalation of privilege with system execution privileges, posing a serious security risk.

The Impact of CVE-2021-0633

The impact of this vulnerability is significant as it allows an attacker to exploit the display driver issue without the need for user interaction. By exploiting this flaw, malicious actors could gain system privileges and elevate their access within the affected devices.

Technical Details of CVE-2021-0633

Explore the technical aspects and specifics of CVE-2021-0633 to understand its implications better.

Vulnerability Description

The vulnerability involves an incorrect bounds check in the display driver, paving the way for an out-of-bounds write. This could be leveraged by threat actors to escalate their privileges locally on the target device.

Affected Systems and Versions

Multiple MediaTek products running Android 11 are affected by CVE-2021-0633. Devices utilizing the following processors are vulnerable: MT6580, MT6735, MT6737, MT6739, MT6753, MT6761, MT6762, MT6763, MT6765, MT6768, MT6769, MT6771, MT6779, MT6785, MT6833, MT6853, MT6853T, MT6873, MT6875, MT6877, MT6883, MT6885, MT6893, MT8168, MT8175, MT8195, MT8321, MT8365, MT8765.

Exploitation Mechanism

Exploiting this vulnerability does not require user interaction, making it more dangerous. Attackers can potentially craft a malicious payload to trigger the out-of-bounds write in the display driver and execute code with elevated privileges.

Mitigation and Prevention

Learn how to protect your systems and devices from the CVE-2021-0633 vulnerability through effective mitigation strategies and security practices.

Immediate Steps to Take

It is crucial to apply the patch provided by MediaTek with Patch ID ALPS05585423 to address the vulnerability in the display driver. Immediate patching is recommended to prevent exploitation and secure the affected devices.

Long-Term Security Practices

Incorporate robust security practices such as regular software updates, threat monitoring, and access control mechanisms to strengthen the overall security posture of your devices and mitigate the risk of privilege escalation vulnerabilities.

Patching and Updates

Stay vigilant for security updates from MediaTek and other relevant sources to ensure that your devices are shielded against known vulnerabilities. Regularly applying patches and updates is essential for maintaining a secure environment.