CVE-2021-39676 Explained : Impact and Mitigation
Learn about CVE-2021-39676, a vulnerability in Android's AndroidFuture.java that allows local privilege escalation without user interaction. Find mitigation steps and recommended security practices.
Android vulnerability that could lead to local privilege escalation without user interaction.
Understanding CVE-2021-39676
A vulnerability in Android's AndroidFuture.java that could allow privilege escalation.
What is CVE-2021-39676?
- Improper input validation in writeThrowable of AndroidFuture.java
- Allows local escalation of privilege without additional execution privileges
The Impact of CVE-2021-39676
- Local escalation of privilege without requiring user interaction
Technical Details of CVE-2021-39676
Vulnerability details for Android vulnerability.
Vulnerability Description
- Parcel serialization/deserialization mismatch
- Could lead to local escalation of privilege
Affected Systems and Versions
- Product: Android
- Versions: Android-11
Exploitation Mechanism
- No additional execution privileges needed
Mitigation and Prevention
Steps to mitigate and prevent the CVE-2021-39676 vulnerability.
Immediate Steps to Take
- Update Android to a non-vulnerable version
- Apply patches provided by the vendor
Long-Term Security Practices
- Regularly update Android devices
- Implement proper input validation in applications
Patching and Updates
- Follow the security bulletin for Android updates