CVE-2023-21162 : Vulnerability Insights and Analysis

This CVE record details a security vulnerability identified as CVE-2023-21162 that was published on December 4, 2023, by the assigner organization Google Android. The vulnerability involves an elevation of privilege issue in the Android system, specifically in the RGXUnbackingZSBuffer of rgxta3d.c.

Understanding CVE-2023-21162

This section will provide an overview of what CVE-2023-21162 is, its impact, technical details, as well as mitigation and prevention strategies.

What is CVE-2023-21162?

CVE-2023-21162 is a security vulnerability found in the Android system that allows for a possible arbitrary code execution due to a use after free in the RGXUnbackingZSBuffer of rgxta3d.c. This vulnerability may lead to local escalation of privilege within the kernel without the need for additional execution privileges or user interaction.

The Impact of CVE-2023-21162

The impact of CVE-2023-21162 is significant as it could potentially allow threat actors to execute arbitrary code and escalate privileges within the Android system. This could lead to unauthorized access to sensitive information and functionalities on affected devices.

Technical Details of CVE-2023-21162

In this section, we will delve into the specific technical aspects of CVE-2023-21162, including vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability resides in the RGXUnbackingZSBuffer of rgxta3d.c in the Android system, where a use after free scenario occurs, enabling attackers to execute arbitrary code and potentially escalate privileges within the kernel.

Affected Systems and Versions

The affected system in this CVE is Google's Android, specifically impacting devices using the Android SoC version. Devices running this specific configuration are considered vulnerable to the exploit.

Exploitation Mechanism

Exploiting CVE-2023-21162 involves leveraging the use after free condition in the RGXUnbackingZSBuffer of rgxta3d.c. Attackers can potentially trigger this vulnerability to execute arbitrary code and achieve local privilege escalation without requiring additional execution privileges or user interaction.

Mitigation and Prevention

To safeguard systems against CVE-2023-21162, immediate steps, long-term security practices, and patching procedures are essential.

Immediate Steps to Take

Immediate actions include monitoring security bulletins for updates from Google regarding this vulnerability, implementing security measures to prevent unauthorized code execution, and ensuring system integrity.

Long-Term Security Practices

Implementing robust security practices such as regular system updates, conducting security audits, enhancing kernel security mechanisms, and employing access controls can help prevent similar vulnerabilities in the future.

Patching and Updates

Regularly applying security patches and updates released by Google for the Android system is crucial to mitigate the risk of CVE-2023-21162. Promptly installing patches can address the identified vulnerability and strengthen the overall security posture of the system.