CVE-2021-39775 : What You Need to Know

This article provides insights into CVE-2021-39775, a vulnerability in Android-12L that can lead to information disclosure without the need for user interaction.

Understanding CVE-2021-39775

CVE-2021-39775 is a vulnerability in Android-12L that allows for the determination of installed apps without query permissions, potentially resulting in local information disclosure.

What is CVE-2021-39775?

The vulnerability in People allows the identification of installed apps without user interaction.

The Impact of CVE-2021-39775

Possibility of local information disclosure without additional execution privileges.

Technical Details of CVE-2021-39775

CVE-2021-39775 involves the following details:

Vulnerability Description

In People, it is possible to determine installed apps without requiring query permissions, leading to potential information disclosure.

Affected Systems and Versions

Product: Android
Version: Android-12L

Exploitation Mechanism

Side channel information disclosure enables the identification of installed apps, posing an information disclosure risk.

Mitigation and Prevention

Here are the steps to mitigate and prevent exploitation of CVE-2021-39775:

Immediate Steps to Take

Apply security patches released by Android for Android-12L.
Monitor app permissions and restrict unnecessary access.

Long-Term Security Practices

Regularly update the Android OS to the latest version.
Educate users on the importance of app permission management.

Patching and Updates

Stay informed about security bulletins and promptly apply recommended patches.