CVE-2021-39766 Explained : Impact and Mitigation

This article provides details about CVE-2021-39766, a vulnerability impacting Android-12L.

Understanding CVE-2021-39766

CVE-2021-39766 is an information disclosure vulnerability affecting Android-12L.

What is CVE-2021-39766?

CVE-2021-39766 allows an attacker to determine whether an app is installed in Settings without query permissions, leading to local information disclosure without additional execution privileges, and no user interaction required.

The Impact of CVE-2021-39766

The vulnerability could result in local information disclosure without the need for user interaction, posing a risk to data confidentiality.

Technical Details of CVE-2021-39766

This section covers specific technical aspects of the CVE.

Vulnerability Description

The vulnerability in Settings allows unauthorized app detection without query permissions, potentially leaking sensitive information.

Affected Systems and Versions

Product: Android
Version: Android-12L

Exploitation Mechanism

The vulnerability is exploited through side-channel information disclosure, enabling attackers to determine app presence without necessary permissions.

Mitigation and Prevention

Learn how to mitigate and prevent potential exploitation of CVE-2021-39766.

Immediate Steps to Take

Update Android devices running version Android-12L promptly.
Monitor official Android security bulletins for related patches.

Long-Term Security Practices

Regularly update Android devices to the latest OS versions.
Implement security best practices to safeguard against information disclosure vulnerabilities.

Patching and Updates

Apply security patches released by Android promptly to address CVE-2021-39766 and other security issues.