CVE-2023-20828 : Security Advisory and Response

This article provides detailed information about CVE-2023-20828, a vulnerability identified and published by MediaTek.

Understanding CVE-2023-20828

CVE-2023-20828 highlights a potential out-of-bounds write vulnerability in the GPS module, specifically in MediaTek products. This vulnerability could allow an attacker to escalate privileges locally without the need for user interaction, requiring system execution privileges for exploitation.

What is CVE-2023-20828?

The vulnerability in CVE-2023-20828 arises from a missing bounds check within the GPS module of various MediaTek products. If successfully exploited, an attacker could gain elevated privileges on the system, posing a significant security risk.

The Impact of CVE-2023-20828

The impact of CVE-2023-20828 includes the potential for malicious actors to exploit the vulnerability to escalate their privileges on affected MediaTek devices. This could lead to unauthorized access and control over sensitive information stored on the device.

Technical Details of CVE-2023-20828

The technical details of CVE-2023-20828 shed light on the specifics of the vulnerability, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability involves an out-of-bounds write issue in the GPS module of MediaTek products, allowing attackers to execute malicious code and elevate their privileges on the system.

Affected Systems and Versions

Various MediaTek products such as MT2735, MT6761, MT6762, and others are affected by CVE-2023-20828. The vulnerability impacts systems running Android 12.0, 13.0, OpenWrt 1907, 2102, Yocto 2.6, and RDK-B 22Q3, indicating a broad range of potentially vulnerable devices.

Exploitation Mechanism

Exploiting CVE-2023-20828 does not require user interaction, making it particularly concerning. Attackers can leverage the missing bounds check in the GPS module to execute malicious activities and escalate their privileges without detection.

Mitigation and Prevention

Addressing CVE-2023-20828 requires immediate action to mitigate the risk and prevent potential exploitation on vulnerable devices.

Immediate Steps to Take

Users and administrators are advised to apply the provided patch (Patch ID: ALPS08014144) to secure MediaTek devices against CVE-2023-20828. Implementing security updates promptly is crucial to safeguarding systems from potential attacks.

Long-Term Security Practices

Establishing robust security practices, such as regular security audits, network segmentation, and user access control, can enhance overall cybersecurity posture against similar vulnerabilities in the future.

Patching and Updates

Regularly monitor and apply security patches and updates provided by MediaTek to ensure that devices remain protected against known vulnerabilities like CVE-2023-20828. Stay informed about security advisories and take proactive measures to prevent security breaches.