CVE-2020-27054 : Exploit Details and Defense Strategies
Learn about CVE-2020-27054, a vulnerability in Android's BluetoothManagerService.java that could lead to local privilege escalation on Android-11 devices without additional execution privileges.
Android BluetoothManagerService.java Missing Permission Check Vulnerability
Understanding CVE-2020-27054
This CVE involves a missing permission check in the onFactoryReset function of BluetoothManagerService.java in Android, potentially leading to local privilege escalation without requiring additional execution privileges.
What is CVE-2020-27054?
The vulnerability in BluetoothManagerService.java could allow an attacker to escalate privileges locally without the need for user interaction.
The Impact of CVE-2020-27054
The missing permission check could be exploited to achieve local privilege escalation on Android devices running version 11.
Technical Details of CVE-2020-27054
Vulnerability Description
The issue arises from a lack of permission validation in the onFactoryReset function of BluetoothManagerService.java.
Affected Systems and Versions
- Product: Android
- Version: Android-11
Exploitation Mechanism
The vulnerability can be exploited locally without requiring any additional execution privileges.
Mitigation and Prevention
Immediate Steps to Take
- Apply security patches provided by the vendor promptly.
- Monitor official sources for updates and advisories.
Long-Term Security Practices
- Regularly update the Android operating system to the latest version.
- Implement security best practices to mitigate privilege escalation risks.
- Use caution when installing apps from unknown sources.
Patching and Updates
Ensure that the Android device is updated with the latest security patches to address the vulnerability.