Vulnerabilities > CVE-2021-39704 - Improper Preservation of Permissions vulnerability in Google Android 10.0/11.0/12.0
Attack vector
LOCAL Attack complexity
LOW Privileges required
LOW Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
In deleteNotificationChannelGroup of NotificationManagerService.java, there is a possible way to run foreground service without user notification due to a permissions bypass. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12Android ID: A-209965481
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| OS | 3 |