CVE-2022-21759 : Exploit Details and Defense Strategies

This article provides detailed information about CVE-2022-21759, a vulnerability affecting various MediaTek processors and Android versions.

Understanding CVE-2022-21759

CVE-2022-21759 is a security vulnerability identified in MediaTek processors that can lead to an escalation of privilege without the need for user interaction. The issue specifically lies within the power service due to a missing bounds check.

What is CVE-2022-21759?

The CVE-2022-21759 vulnerability in MediaTek processors could allow a local attacker to execute malicious code and gain system execution privileges without requiring any interaction from the user.

The Impact of CVE-2022-21759

This vulnerability could result in a local escalation of privilege, enabling an attacker to gain elevated access rights and potentially perform unauthorized actions on the affected system.

Technical Details of CVE-2022-21759

The following technical details outline the specifics of the CVE-2022-21759 vulnerability.

Vulnerability Description

The vulnerability stems from a missing bounds check in the power service of MediaTek processors, potentially leading to an out-of-bounds write that could be exploited by an attacker.

Affected Systems and Versions

The affected products include a wide range of MediaTek processors such as MT6580, MT6765, MT6873, and more, running Android versions 11.0 and 12.0.

Exploitation Mechanism

Exploiting this vulnerability does not require any user interaction, making it easier for an attacker to leverage the flaw and gain unauthorized privileges on the system.

Mitigation and Prevention

To mitigate the risks associated with CVE-2022-21759, consider implementing the following preventive measures.

Immediate Steps to Take

Apply patches provided by MediaTek to address the vulnerability, with Patch ID: ALPS06419106 available for remediation.

Long-Term Security Practices

Regularly update the affected systems with security patches and software updates to prevent exploitation of known vulnerabilities.

Patching and Updates

Stay informed about security bulletins and advisories from MediaTek to stay updated on potential security threats and recommended patches.