CVE-2018-14854 : Exploit Details and Defense Strategies

The bcmdhd4358 Wi-Fi driver on the Samsung Galaxy S6 SM-G920F G920FXXU5EQH7 is vulnerable to a buffer overflow in the dhd_bus_flow_ring_delete_response function located in drivers/net/wireless/bcmdhd4358/dhd_pcie.c. This vulnerability can be exploited by an attacker who has gained code execution on the Wi-Fi chip.

Understanding CVE-2018-14854

This CVE entry describes a buffer overflow vulnerability in the bcmdhd4358 Wi-Fi driver on the Samsung Galaxy S6 SM-G920F G920FXXU5EQH7.

What is CVE-2018-14854?

The vulnerability allows an attacker with code execution on the Wi-Fi chip to trigger invalid memory accesses in the device driver.

The Impact of CVE-2018-14854

Exploiting this vulnerability can lead to potential security breaches and compromise the device's integrity.

Technical Details of CVE-2018-14854

The technical aspects of the vulnerability are as follows:

Vulnerability Description

The buffer overflow occurs in the dhd_bus_flow_ring_delete_response function in the bcmdhd4358 Wi-Fi driver.

Affected Systems and Versions

Product: Samsung Galaxy S6 SM-G920F
Version: G920FXXU5EQH7

Exploitation Mechanism

Attackers need code execution on the Wi-Fi chip to exploit this vulnerability.

Mitigation and Prevention

Steps to address and prevent exploitation of CVE-2018-14854:

Immediate Steps to Take

Apply security patches provided by Samsung promptly.
Monitor for any suspicious activities on the device.

Long-Term Security Practices

Regularly update device firmware and software.
Implement network security measures to prevent unauthorized access.

Patching and Updates

Stay informed about security updates from Samsung and apply them as soon as they are available.