CVE-2019-2134 : Exploit Details and Defense Strategies
Learn about CVE-2019-2134, an Android vulnerability allowing local privilege escalation. Find out how to mitigate the risk and protect your device.
Android devices running versions 7.0 through 9 are susceptible to an integer overflow vulnerability that could lead to local privilege escalation.
Understanding CVE-2019-2134
This CVE identifies a potential security issue in Android devices that could allow attackers to escalate privileges locally without additional execution privileges.
What is CVE-2019-2134?
An integer overflow in the phNxpExtns_MifareStd.cpp file's phFriNfc_ExtnsTransceive function may result in an out-of-bounds write, enabling local privilege escalation on Android versions 7.0 through 9.
The Impact of CVE-2019-2134
Exploiting this vulnerability requires user interaction but could lead to unauthorized escalation of privileges on affected Android devices.
Technical Details of CVE-2019-2134
This section provides more technical insights into the vulnerability.
Vulnerability Description
The issue lies in the phFriNfc_ExtnsTransceive function of phNxpExtns_MifareStd.cpp, where an integer overflow can trigger an out-of-bounds write, potentially leading to privilege escalation.
Affected Systems and Versions
- Product: Android
- Versions: Android-7.0, Android-7.1.1, Android-7.1.2, Android-8.0, Android-8.1, Android-9
Exploitation Mechanism
- Attackers can exploit this vulnerability by interacting with the affected Android device, leveraging the integer overflow to escalate privileges.
Mitigation and Prevention
Protecting systems from CVE-2019-2134 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply security patches provided by the device manufacturer promptly.
- Educate users about potential risks associated with interacting with untrusted sources.
Long-Term Security Practices
- Regularly update devices to the latest software versions to mitigate known vulnerabilities.
- Implement security best practices to minimize the impact of potential privilege escalation attacks.
Patching and Updates
- Stay informed about security bulletins and updates released by Android to address CVE-2019-2134.