CVE-2022-20070 : What You Need to Know

This article provides detailed information about CVE-2022-20070, a vulnerability found in MediaTek devices running Android 11.0 and 12.0.

Understanding CVE-2022-20070

CVE-2022-20070 is a security vulnerability that exists in the ssmr component of certain MediaTek devices. It can be exploited for local privilege escalation without requiring user interaction.

What is CVE-2022-20070?

CVE-2022-20070 is a potential out-of-bounds write vulnerability in the ssmr component of MediaTek devices. The issue arises from a missing bounds check, allowing an attacker to execute arbitrary code with elevated privileges.

The Impact of CVE-2022-20070

This vulnerability could be exploited by an attacker to escalate their privileges locally on affected devices, leading to unauthorized access and control over the system.

Technical Details of CVE-2022-20070

CVE ID: CVE-2022-20070 Published Date: April 11, 2022 Update Date: April 11, 2022

Vulnerability Description

The vulnerability stems from a missing bounds check in the ssmr component, enabling an out-of-bounds write operation that can be leveraged for privilege escalation attacks.

Affected Systems and Versions

Affected Vendor: MediaTek, Inc.
Affected Products: MT6731, MT6732, MT6735, and various other models
Affected Versions: Android 11.0, 12.0

Exploitation Mechanism

The vulnerability can be exploited without the need for user interaction, allowing attackers to craft malicious payloads to exploit the out-of-bounds write flaw and elevate their privileges.

Mitigation and Prevention

To mitigate the risks associated with CVE-2022-20070, users and administrators should take immediate actions to protect their devices.

Immediate Steps to Take

Apply the relevant security patch provided by MediaTek (Patch ID: ALPS06362920)
Regularly update the affected devices to the latest firmware versions

Long-Term Security Practices

Employ security best practices such as using strong passwords and enabling device encryption
Monitor official security bulletins and updates from MediaTek

Patching and Updates

It is crucial to stay informed about security patches released by MediaTek and promptly apply them to ensure protection against known vulnerabilities.