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CVE-2023-20728 : Security Advisory and Response

Learn about CVE-2023-20728 affecting MediaTek wlan, leading to local info disclosure. Immediate patching recommended for Android and Yocto devices.

This CVE record was assigned by MediaTek and was published on June 6, 2023. It pertains to a vulnerability in wlan that could result in local information disclosure.

Understanding CVE-2023-20728

This section will delve into what CVE-2023-20728 is and the impact it can have, along with the technical details of the vulnerability.

What is CVE-2023-20728?

CVE-2023-20728 involves a potential out-of-bounds read in wlan due to a missing bounds check. The exploitation does not require user interaction, and it may lead to local information disclosure with the necessity of system execution privileges.

The Impact of CVE-2023-20728

The impact of this vulnerability lies in the potential for local information disclosure, which could pose a risk to the confidentiality of sensitive data on affected systems.

Technical Details of CVE-2023-20728

Here, we will explore the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability in wlan is caused by a missing bounds check, resulting in an out-of-bounds read. This could lead to the exposure of local information without requiring user interaction.

Affected Systems and Versions

The products affected by CVE-2023-20728 include a range of MediaTek devices such as MT6781, MT6789, MT6833, and more. The impacted versions involve Android 12.0, 13.0, as well as Yocto 3.1, 3.3, and 4.0.

Exploitation Mechanism

Exploiting this vulnerability could allow malicious actors to gain access to sensitive information stored on the affected devices without needing any user interaction.

Mitigation and Prevention

In this section, we will discuss the immediate steps to take, long-term security practices, and the importance of patching and updates.

Immediate Steps to Take

It is crucial to apply the provided patch ID: ALPS07573603 to address the vulnerability promptly. Additionally, users should take necessary precautions to safeguard their devices against potential exploitation.

Long-Term Security Practices

Implementing robust security measures, such as regular security audits, network segmentation, and employee training on cybersecurity best practices, can help enhance the overall security posture and prevent future vulnerabilities.

Patching and Updates

Regularly updating software and firmware, especially when security patches are released by vendors like MediaTek, is essential to ensure that known vulnerabilities are mitigated and the system remains protected against potential threats.

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