In lockNow of PhoneWindowManager.java, there is a possible lock screen bypass due to a race condition. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-8.1 Android-9Android ID: A-161149543
CVE-2021-0688 - High Severity Vulnerability
Vulnerable Library - baseandroid-10.0.0_r34
Android framework classes and services
Library home page: https://android.googlesource.com/platform/frameworks/base
Found in HEAD commit: d8f6b708be07b0042c1fe77f596e197a04c32153
Found in base branch: master
Vulnerable Source Files (1)
/services/core/java/com/android/server/policy/PhoneWindowManager.java
Vulnerability Details
In lockNow of PhoneWindowManager.java, there is a possible lock screen bypass due to a race condition. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-8.1 Android-9Android ID: A-161149543
Publish Date: 2021-10-06
URL: CVE-2021-0688
CVSS 3 Score Details (7.0)
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Local - Attack Complexity: High - Privileges Required: Low - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: High - Integrity Impact: High - Availability Impact: High
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: https://source.android.com/security/bulletin/2021-09-01
Release Date: 2021-10-06
Fix Resolution: android-11.0.0_r43
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