CVE-2021-39747 : Vulnerability Insights and Analysis

This article provides insights into CVE-2021-39747, a vulnerability in Android-12L that could lead to local information disclosure.

Understanding CVE-2021-39747

CVE-2021-39747 is related to a permissions bypass vulnerability in Android-12L's Settings Provider that could result in local information disclosure without the need for user interaction.

What is CVE-2021-39747?

In Android-12L's Settings Provider, a potential method exists to list values of non-readable global settings, allowing for a permissions bypass. This could lead to local information disclosure without requiring additional execution privileges or user interaction.

The Impact of CVE-2021-39747

The vulnerability could allow an attacker to disclose sensitive local information without the need for user interaction or elevated execution privileges.

Technical Details of CVE-2021-39747

CVE-2021-39747 involves the following technical aspects:

Vulnerability Description

Settings Provider in Android-12L allows listing of non-readable global settings due to a permissions bypass

Affected Systems and Versions

Product: Android
Versions affected: Android-12L

Exploitation Mechanism

The issue arises due to a potential method in Settings Provider to bypass permissions and disclose local information

Mitigation and Prevention

Taking immediate steps and implementing long-term security practices are crucial to mitigate the risks associated with CVE-2021-39747.

Immediate Steps to Take

Update Android devices running on affected versions to the latest patches
Implement access controls to limit exposure to sensitive information

Long-Term Security Practices

Regularly monitor and audit access to global settings
Stay informed about security advisories and updates from Android

Patching and Updates

Apply security patches promptly to address the vulnerability and enhance overall security of Android devices