CVE-2023-20677 : Vulnerability Insights and Analysis

This CVE-2023-20677 was published on April 6, 2023, by MediaTek. It involves a vulnerability in wlan that could potentially lead to local information disclosure with System execution privileges needed. The exploit does not require user interaction for exploitation. Affected products include a wide range of MediaTek chipsets and versions.

Understanding CVE-2023-20677

In this section, we will delve deeper into the details of CVE-2023-20677, understanding the vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2023-20677?

CVE-2023-20677 involves a possible out of bounds read in wlan due to a missing bounds check, potentially leading to local information disclosure. System execution privileges are required for exploitation, and user interaction is not needed.

The Impact of CVE-2023-20677

The impact of CVE-2023-20677 is significant as it could allow malicious actors to access sensitive information locally without user interaction. This poses a risk to the confidentiality and security of affected systems.

Technical Details of CVE-2023-20677

In this section, we will explore the technical details of CVE-2023-20677, including the vulnerability description, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability in wlan results from a missing bounds check, leading to a potential out of bounds read. This flaw could be exploited to disclose sensitive information locally.

Affected Systems and Versions

Numerous MediaTek chipsets are affected by CVE-2023-20677, including MT5221, MT6781, MT6789, MT6833, and many more. The vulnerability impacts versions such as Android 11.0, 12.0, 13.0, Yocto 3.1, 3.3, 4.0, and Linux-4.19 for specific chipsets.

Exploitation Mechanism

The vulnerability can be exploited by attackers with System execution privileges without requiring user interaction. Through a missing bounds check in wlan, attackers could potentially gain access to local information on vulnerable systems.

Mitigation and Prevention

Mitigating CVE-2023-20677 is crucial to safeguard affected systems and prevent potential information disclosure. Here are the steps recommended to address this vulnerability:

Immediate Steps to Take

Implement security patches provided by MediaTek to address the vulnerability.
Monitor systems for any suspicious activities or unauthorized access attempts.
Restrict network access and communication to minimize the risk of exploitation.

Long-Term Security Practices

Regularly update and patch systems to ensure the latest security fixes are in place.
Conduct security assessments and penetration testing to identify and address vulnerabilities proactively.
Educate users and employees on cybersecurity best practices to enhance overall security posture.

Patching and Updates

It is essential for organizations and users utilizing affected MediaTek chipsets to apply the provided patch ID: ALPS07588413, and Issue ID: ALPS07588436 to mitigate the risk associated with CVE-2023-20677. Regularly check for updates and security bulletins from MediaTek to stay protected against emerging threats.