CVE-2021-1034 : Exploit Details and Defense Strategies

This article provides detailed information about CVE-2021-1034, a vulnerability in Android-12 that could lead to local information disclosure without the need for additional execution privileges.

Understanding CVE-2021-1034

This section covers what CVE-2021-1034 is and its impact on affected systems.

What is CVE-2021-1034?

CVE-2021-1034 is a vulnerability in Android-12 that allows determining whether an app is installed without proper permission checks, leading to potential local information disclosure.

The Impact of CVE-2021-1034

The vulnerability could be exploited to disclose local information without requiring user interaction, posing a risk to data confidentiality.

Technical Details of CVE-2021-1034

This section dives into the specifics of the vulnerability, including affected systems, versions, and exploitation mechanisms.

Vulnerability Description

The vulnerability exists in getLine1NumberForDisplay of PhoneInterfaceManager.java, enabling unauthorized app detection without proper permission validation.

Affected Systems and Versions

The vulnerability impacts Android-12, specifically exposing devices running this version to the risk of local information disclosure.

Exploitation Mechanism

By leveraging the missing permission check, attackers can determine app existence without user consent, potentially leading to sensitive data exposure.

Mitigation and Prevention

In this section, you will find guidance on how to mitigate the risk and prevent exploitation of CVE-2021-1034.

Immediate Steps to Take

Users should update their Android devices to the latest patches and security updates to address the vulnerability promptly.

Long-Term Security Practices

Implement stringent app permission controls and monitor for unauthorized access attempts to enhance overall security posture.

Patching and Updates

Regularly check for and install software updates provided by Google for Android-12 to ensure protection against known vulnerabilities.