CVE-2023-21016 Explained : Impact and Mitigation

This CVE record was published on March 24, 2023, by Google Android, highlighting a vulnerability in the AccountTypePreference of AccountTypePreference.java. The vulnerability could potentially mislead users about accounts installed on the device due to improper input validation, leading to a local denial of service without requiring additional execution privileges.

Understanding CVE-2023-21016

This section will provide an overview of CVE-2023-21016, discussing what the vulnerability entails and its impact.

What is CVE-2023-21016?

CVE-2023-21016 is a vulnerability found in the AccountTypePreference of AccountTypePreference.java within the Android system. It allows an attacker to mislead users about accounts on the device, potentially leading to a local denial of service attack. The vulnerability stems from improper input validation, which can be exploited without the need for user interaction.

The Impact of CVE-2023-21016

The impact of CVE-2023-21016 lies in its ability to deceive users regarding the accounts present on their device. By exploiting this vulnerability, an attacker can cause a local denial of service, disrupting normal device functionality without requiring additional permissions.

Technical Details of CVE-2023-21016

In this section, we will dive into the technical aspects of CVE-2023-21016, including the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability in AccountTypePreference of AccountTypePreference.java allows for misleading users about installed accounts on an Android device due to inadequate input validation. This flaw can be exploited to trigger a local denial of service attack.

Affected Systems and Versions

The affected system in this case is Android, specifically version Android-13. Devices running Android-13 are vulnerable to the exploitation of CVE-2023-21016.

Exploitation Mechanism

The exploitation of CVE-2023-21016 involves leveraging the inadequate input validation in AccountTypePreference of AccountTypePreference.java to deceive users about installed accounts on the device. This deception can lead to a local denial of service without requiring additional execution privileges.

Mitigation and Prevention

Here, we discuss the steps to mitigate and prevent the exploitation of CVE-2023-21016, including immediate actions to take, long-term security practices, and the importance of patching and updates.

Immediate Steps to Take

Users and system administrators should be vigilant and cautious while interacting with account-related preferences on Android devices. Implementing additional security measures and closely monitoring account activities can help mitigate the risk of exploitation.

Long-Term Security Practices

In the long term, it is essential to prioritize security in software development, ensuring proper input validation and robust security mechanisms are in place. Regular security assessments and audits can help identify and rectify vulnerabilities before they are exploited.

Patching and Updates

Google Android and device manufacturers should promptly release patches and updates to address CVE-2023-21016. Users are advised to stay informed about security bulletins and apply patches as soon as they become available to safeguard their devices against potential threats.