CVE-2021-39619 : Exploit Details and Defense Strategies
Learn about CVE-2021-39619, a security flaw in Android 11 and 12 allowing privilege escalation without user interaction. Find mitigation steps and updates here.
This CVE-2021-39619 article provides details about a security vulnerability impacting Android versions 11 and 12, allowing for the bypass of security and privacy settings.
Understanding CVE-2021-39619
This section delves into the specifics of CVE-2021-39619 and its implications.
What is CVE-2021-39619?
The vulnerability in updatePackageMappingsData of UsageStatsService.java allows for the bypass of app usage security and privacy settings, potentially resulting in local privilege escalation without additional execution privileges.
The Impact of CVE-2021-39619
The vulnerability poses a risk of local privilege escalation without requiring user interaction.
Technical Details of CVE-2021-39619
Exploring the technical aspects of CVE-2021-39619.
Vulnerability Description
The vulnerability in updatePackageMappingsData of UsageStatsService.java enables the bypass of security and privacy settings, leading to potential privilege escalation.
Affected Systems and Versions
- Product: Android
- Versions: Android-11, Android-12
Exploitation Mechanism
The bypass occurs due to an unusual root cause within the mentioned service.
Mitigation and Prevention
Tips to mitigate the impact of CVE-2021-39619.
Immediate Steps to Take
- Monitor vendor patches and updates for Android versions 11 and 12.
- Implement strict app permission policies.
Long-Term Security Practices
- Regularly update Android devices to the latest firmware.
- Educate users on app security best practices.
Patching and Updates
Stay informed about security bulletins and apply relevant patches promptly.