CVE-2023-20775 : What You Need to Know

This CVE record was published by MediaTek on July 4, 2023, highlighting a potential out-of-bounds write vulnerability in display systems. The vulnerability could allow a local attacker to escalate privileges without the need for user interaction, posing a significant security risk.

Understanding CVE-2023-20775

This section provides an overview of the CVE-2023-20775 vulnerability, its impact, technical details, affected systems, and mitigation strategies.

What is CVE-2023-20775?

CVE-2023-20775 is a vulnerability identified in display systems that arises from a missing bounds check. This flaw could enable a local user to escalate their privileges on the system without requiring any interaction from the user.

The Impact of CVE-2023-20775

The impact of this vulnerability is the potential elevation of privilege, allowing an attacker to gain higher system privileges than originally authorized. This type of vulnerability can be exploited to execute malicious commands and access sensitive data.

Technical Details of CVE-2023-20775

Understanding the technical aspects of CVE-2023-20775 is crucial for implementing effective mitigation strategies and ensuring system security.

Vulnerability Description

The vulnerability in display systems results from an out-of-bounds write issue due to a missing bounds check. Exploiting this flaw could lead to unauthorized privilege escalation on the affected system.

Affected Systems and Versions

The CVE-2023-20775 vulnerability impacts a range of MediaTek products, including MT6739, MT6757, MT6761, and more. The affected versions include Android 12.0, 13.0, OpenWrt 21.02, and RDKB 2022Q3.

Exploitation Mechanism

The vulnerability can be exploited by a local attacker to perform an out-of-bounds write operation on the display system, leading to the escalation of privileges without requiring user interaction.

Mitigation and Prevention

To safeguard systems from the risks associated with CVE-2023-20775, it is essential to adopt proactive security measures and implement effective mitigation strategies.

Immediate Steps to Take

Update affected MediaTek products with the provided Patch ID: ALPS07978760 to address the vulnerability promptly. Additionally, monitor system activity for any signs of unauthorized privilege escalation.

Long-Term Security Practices

Implement strict access controls, regularly review system logs for unusual activities, and conduct security assessments to identify and remediate potential vulnerabilities proactively.

Patching and Updates

Stay informed about security bulletins and patches released by MediaTek to address vulnerabilities promptly. Regularly apply updates to ensure that systems are protected against known security risks.