CVE-2021-39791 Explained : Impact and Mitigation
Learn about CVE-2021-39791, a security vulnerability in Android-12L enabling local information disclosure. Find mitigation steps and prevention measures.
This article provides details about CVE-2021-39791, a vulnerability in Android-12L that could lead to local information disclosure.
Understanding CVE-2021-39791
This section explains the nature of the vulnerability and its impact.
What is CVE-2021-39791?
CVE-2021-39791 is a vulnerability in WallpaperManagerService in Android-12L that allows determining app installations without query permissions, potentially leading to local information disclosure.
The Impact of CVE-2021-39791
The vulnerability could result in local information disclosure without requiring additional execution privileges or user interaction.
Technical Details of CVE-2021-39791
This section delves into the technical aspects of the vulnerability.
Vulnerability Description
The issue lies in WallpaperManagerService, enabling the identification of installed apps without proper permissions, leading to potential information disclosure.
Affected Systems and Versions
- Product: Android
- Version: Android-12L
Exploitation Mechanism
The vulnerability exploits side channel information disclosure in WallpaperManagerService, bypassing the need for user interaction.
Mitigation and Prevention
Learn how to address and prevent exploits of CVE-2021-39791.
Immediate Steps to Take
- Regularly update Android devices to the latest security patches.
- Monitor official Android security bulletins for relevant updates.
Long-Term Security Practices
- Implement strict permission controls for apps to limit information disclosure risks.
- Educate users on the importance of applying security updates promptly.
Patching and Updates
Ensure timely installation of Android security patches to mitigate CVE-2021-39791 and other potential vulnerabilities.