CVE-2023-20676 Explained : Impact and Mitigation

This CVE record, assigned by MediaTek, involves a potential out-of-bounds read vulnerability in wlan, which could result in local information disclosure with the requirement of system execution privileges, without the need for user interaction. The vulnerability has been assigned Patch ID ALPS07588569 and Issue ID ALPS07628518.

Understanding CVE-2023-20676

This section delves into the specifics of CVE-2023-20676, outlining the vulnerability's nature and impact.

What is CVE-2023-20676?

CVE-2023-20676 pertains to an out-of-bounds read issue in wlan, posing a risk of local information disclosure. It requires system execution privileges for exploitation, without the need for user interaction.

The Impact of CVE-2023-20676

The vulnerability could potentially allow threat actors to access sensitive information locally, emphasizing the importance of prompt mitigation measures.

Technical Details of CVE-2023-20676

Here, we provide detailed technical information regarding CVE-2023-20676, including the vulnerability description, affected systems, versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability stems from a missing bounds check in wlan, leading to a possible out-of-bounds read scenario that could be leveraged for local information disclosure.

Affected Systems and Versions

The vulnerability impacts a range of MediaTek products, including MT5221, MT6781, MT6789, MT6833, and more. Affected versions include Android 11.0, 12.0, 13.0, Yocto 3.1, 3.3, 4.0, and Linux-4.19 for specific chipsets.

Exploitation Mechanism

Exploiting this vulnerability does not require user interaction but necessitates system execution privileges for potential information disclosure.

Mitigation and Prevention

In this section, we provide guidance on mitigating the risks associated with CVE-2023-20676 and implementing preventive measures to enhance overall system security.

Immediate Steps to Take

Immediate actions, such as applying relevant patches and security updates, are crucial to addressing the vulnerability promptly and reducing the risk of exploitation.

Long-Term Security Practices

Implementing robust security practices, including regular security audits, network monitoring, and employee cybersecurity training, can help safeguard systems against potential threats.

Patching and Updates

Staying vigilant about security patches released by MediaTek, applying updates promptly, and ensuring system components are up-to-date can enhance overall cybersecurity posture and mitigate the risk posed by CVE-2023-20676.