CVE-2022-26433 : Security Advisory and Response

This article provides detailed information about CVE-2022-26433, a vulnerability affecting multiple MediaTek products running specific Android and Yocto versions.

Understanding CVE-2022-26433

CVE-2022-26433 involves a potential out-of-bounds write vulnerability in the mailbox component, resulting from type confusion. The exploitation of this vulnerability could allow local attackers to escalate privileges without requiring user interaction.

What is CVE-2022-26433?

The CVE-2022-26433 vulnerability exists in certain MediaTek products, including MT6833, MT6853, and others, when running Android 11.0, 12.0, or Yocto 3.1, 3.3. It poses a risk of elevation of privilege, requiring system execution privileges for successful exploitation.

The Impact of CVE-2022-26433

The impact of CVE-2022-26433 could lead to unauthorized escalation of privileges on affected devices. This could potentially allow malicious actors to execute arbitrary code or perform unauthorized actions on the compromised system.

Technical Details of CVE-2022-26433

This section delves into the specifics of the vulnerability, including its description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability stems from a type confusion issue in the mailbox component, which could result in an out-of-bounds write scenario. This flaw enables attackers to manipulate memory and potentially gain elevated privileges on the target system.

Affected Systems and Versions

CVE-2022-26433 impacts a wide range of MediaTek products, such as MT6833, MT6853, MT6873, and others, that are running Android 11.0, 12.0, or Yocto 3.1, 3.3. Systems utilizing these versions are vulnerable to exploitation.

Exploitation Mechanism

To exploit CVE-2022-26433, attackers do not require user interaction. By sending specially crafted requests to the mailbox component, threat actors can trigger the out-of-bounds write scenario and potentially gain escalated privileges.

Mitigation and Prevention

This section outlines the steps to mitigate the risk posed by CVE-2022-26433 and prevent potential exploitation.

Immediate Steps to Take

Users and administrators are advised to apply the relevant patch provided by MediaTek (Patch ID: ALPS07138400) to address the vulnerability. Timely patching is crucial to prevent unauthorized privilege escalation.

Long-Term Security Practices

In the long term, it is essential to follow security best practices, such as regularly updating software and implementing robust security measures to safeguard devices against future vulnerabilities.

Patching and Updates

Staying informed about security advisories from vendors like MediaTek and promptly applying patches and updates can significantly enhance the security posture of vulnerable systems.