CVE-2018-14856 Explained : Impact and Mitigation
Learn about CVE-2018-14856, a buffer overflow vulnerability in the bcmdhd4358 Wi-Fi driver on Samsung Galaxy S6 SM-G920F G920FXXU5EQH7, enabling unauthorized memory accesses by attackers.
A potential vulnerability has been identified in the bcmdhd4358 Wi-Fi driver on the Samsung Galaxy S6 SM-G920F G920FXXU5EQH7, allowing an attacker to manipulate the device driver and perform unauthorized memory accesses.
Understanding CVE-2018-14856
This CVE involves a buffer overflow vulnerability in a specific function within the Wi-Fi driver on the Samsung Galaxy S6, potentially exploitable by an attacker with code execution on the Wi-Fi chip.
What is CVE-2018-14856?
The vulnerability, identified as a buffer overflow, exists in the dhd_bus_flow_ring_create_response function within the bcmdhd4358 Wi-Fi driver on the Samsung Galaxy S6 SM-G920F G920FXXU5EQH7. It can be leveraged by an attacker who has already gained code execution on the Wi-Fi chip.
The Impact of CVE-2018-14856
- Allows unauthorized memory accesses on the device driver
- Enables attackers to manipulate the device driver
Technical Details of CVE-2018-14856
This section provides more in-depth technical information about the vulnerability.
Vulnerability Description
The buffer overflow occurs in the dhd_bus_flow_ring_create_response function within the bcmdhd4358 Wi-Fi driver on the Samsung Galaxy S6 SM-G920F G920FXXU5EQH7, potentially leading to unauthorized memory accesses.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions: Not applicable
Exploitation Mechanism
The vulnerability can be exploited by an attacker who has already obtained code execution on the Wi-Fi chip, allowing them to perform unauthorized memory accesses.
Mitigation and Prevention
Protecting systems from CVE-2018-14856 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply security patches provided by Samsung
- Monitor for any suspicious activities on the Wi-Fi chip
Long-Term Security Practices
- Regularly update device firmware and drivers
- Implement network segmentation to limit the impact of potential attacks
Patching and Updates
- Stay informed about security updates from Samsung
- Apply patches promptly to mitigate the vulnerability