CVE-2023-20635 : What You Need to Know

This CVE-2023-20635 report highlights a vulnerability in MediaTek devices that could potentially lead to information disclosure due to an integer overflow in keyinstall. The exploitation of this vulnerability does not require user interaction but does necessitate system execution privileges.

Understanding CVE-2023-20635

This section delves into the details of CVE-2023-20635, including its impact, technical aspects, affected systems, and mitigation strategies.

What is CVE-2023-20635?

CVE-2023-20635 is a vulnerability found in MediaTek devices that can result in information disclosure. The flaw stems from an integer overflow in keyinstall, allowing malicious actors to access sensitive data without requiring user interaction.

The Impact of CVE-2023-20635

The impact of CVE-2023-20635 is significant as it can lead to local information disclosure on affected devices. Attackers could potentially exploit this vulnerability to gain unauthorized access to sensitive information without the need for user input, posing a serious security risk.

Technical Details of CVE-2023-20635

This section provides a deeper insight into the technical aspects of CVE-2023-20635, including the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability in keyinstall within MediaTek devices is attributed to an integer overflow, which enables attackers to disclose information locally. This flaw can be exploited to obtain sensitive data without user interaction, requiring system execution privileges for successful attacks.

Affected Systems and Versions

The vulnerability affects a wide range of MediaTek devices, including models such as MT6580, MT6731, MT6753, MT6771, and many more. These devices running Android versions 10.0, 11.0, 12.0, and 13.0 are susceptible to the information disclosure issue caused by the CVE-2023-20635 vulnerability.

Exploitation Mechanism

The exploitation of CVE-2023-20635 does not mandate user interaction but demands system execution privileges for successful attacks. By leveraging the integer overflow in keyinstall, threat actors can exploit the vulnerability to gain unauthorized access to sensitive information stored on the affected MediaTek devices.

Mitigation and Prevention

In light of the CVE-2023-20635 vulnerability, it is crucial to take immediate steps to mitigate the risk of information disclosure and enhance the overall security posture of MediaTek devices.

Immediate Steps to Take

Users are advised to apply the provided patch ID ALPS07563028 to address the vulnerability in keyinstall and prevent potential information disclosure.
Implementing stringent access controls and monitoring mechanisms can help detect and thwart unauthorized attempts to exploit the CVE-2023-20635 vulnerability.

Long-Term Security Practices

Regular security assessments and audits should be conducted to identify and remediate potential vulnerabilities within MediaTek devices.
Ensuring timely software updates and patches are applied can help strengthen the security of the devices against emerging threats and vulnerabilities.

Patching and Updates

MediaTek users are recommended to refer to the official security bulletin released by MediaTek for March 2023, which provides detailed information on the vulnerability and steps to mitigate the CVE-2023-20635 issue.
Regularly checking for firmware updates and security patches from MediaTek is essential to stay protected against known vulnerabilities and enhance the overall security resilience of the devices.