CVE-2023-20847 : Vulnerability Insights and Analysis

This CVE record reveals a vulnerability identified as CVE-2023-20847, which was published by MediaTek on September 4, 2023. The vulnerability involves an out-of-bounds read issue in imgsys_cmdq, potentially leading to local denial of service. This vulnerability requires system execution privileges and user interaction for exploitation.

Understanding CVE-2023-20847

This section will detail what CVE-2023-20847 is about, the impact it carries, the technical aspects of the vulnerability, and how to mitigate and prevent its exploitation.

What is CVE-2023-20847?

CVE-2023-20847 refers to an out-of-bounds read vulnerability in imgsys_cmdq. Due to missing valid range checking, this vulnerability could result in local denial of service. Exploiting this vulnerability necessitates both system execution privileges and user interaction.

The Impact of CVE-2023-20847

The impact of CVE-2023-20847 is significant as it can lead to local denial of service. Attackers exploiting this vulnerability could potentially disrupt the normal operation of the affected systems, causing service outages and system instability.

Technical Details of CVE-2023-20847

In this section, we will delve into the specific technical details of CVE-2023-20847, including the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability in imgsys_cmdq is categorized as an out-of-bounds read issue. The absence of proper range checking leaves room for attackers to potentially trigger a denial of service by accessing data beyond the allocated boundaries.

Affected Systems and Versions

The vulnerability impacts products from MediaTek, Inc., including MT6895, MT6897, MT6983, MT8188, MT8195, MT8395, and MT8781. Versions affected include Android 11.0, 12.0, Linux 6.1, IOT-v23.0, and Yocto 4.0.

Exploitation Mechanism

To exploit CVE-2023-20847, attackers would require system execution privileges along with user interaction. By leveraging the out-of-bounds read vulnerability in imgsys_cmdq, attackers can potentially achieve local denial of service on the affected systems.

Mitigation and Prevention

This section outlines the steps that can be taken to mitigate the risks associated with CVE-2023-20847 and prevent its exploitation.

Immediate Steps to Take

Apply the provided patch ID: ALPS07354025 to address the vulnerability.
Monitor system logs and network traffic for any suspicious activities.
Educate users about potential social engineering tactics that could be used to exploit the vulnerability.

Long-Term Security Practices

Regularly update and patch all software and systems to prevent known vulnerabilities.
Implement proper access controls and privilege management to limit the impact of potential attacks.
Conduct regular security audits and penetration testing to identify and address security gaps.

Patching and Updates

Stay informed about security bulletins and updates from MediaTek to ensure timely application of patches for addressing vulnerabilities like CVE-2023-20847. Regularly check for new patches and apply them as soon as they are available to enhance the security posture of the affected systems.