CVE-2020-27036 Explained : Impact and Mitigation
Learn about CVE-2020-27036, a vulnerability in Android NFC server allowing local privilege escalation. Find out affected systems, exploitation, and mitigation steps.
Android NFC Server Vulnerability
Understanding CVE-2020-27036
What is CVE-2020-27036?
CVE-2020-27036 is a vulnerability in the Android NFC server that could allow for local escalation of privilege due to an out-of-bounds write issue.
The Impact of CVE-2020-27036
This vulnerability could be exploited without user interaction, potentially leading to an attacker gaining system execution privileges.
Technical Details of CVE-2020-27036
Vulnerability Description
The vulnerability exists in the phNxpNciHal_send_ext_cmd function of phNxpNciHal_ext.cc, where a missing bounds check can result in an out-of-bounds write.
Affected Systems and Versions
- Product: Android
- Versions: Android-11
Exploitation Mechanism
The vulnerability could be exploited to achieve local escalation of privilege within the NFC server.
Mitigation and Prevention
Immediate Steps to Take
- Apply security patches provided by the vendor promptly.
- Monitor vendor security bulletins for updates.
Long-Term Security Practices
- Regularly update the Android operating system to the latest version.
- Implement proper access controls and permissions for NFC-related functionalities.
Patching and Updates
It is crucial to stay informed about security updates and apply patches as soon as they are released.