CVE-2018-3917 : Vulnerability Insights and Analysis

Samsung SmartThings Hub STH-ETH-250 devices with firmware version 0.20.17 are vulnerable to a buffer overflow issue in the video-core process.

Understanding CVE-2018-3917

This CVE involves a security vulnerability in Samsung SmartThings Hub STH-ETH-250 devices running firmware version 0.20.17.

What is CVE-2018-3917?

The vulnerability in the video-core process of the SmartThings Hub allows attackers to trigger a buffer overflow by sending a specially crafted HTTP request.

The Impact of CVE-2018-3917

The vulnerability has a CVSS base score of 7.5 (High) with significant impacts on confidentiality, integrity, and availability.

Technical Details of CVE-2018-3917

The technical aspects of the CVE-2018-3917 vulnerability.

Vulnerability Description

The video-core process of the SmartThings Hub insecurely extracts data from the SQLite database, leading to a stack-based buffer overflow.
Attackers can exploit this by sending an HTTP request that triggers a buffer overflow in the strcpy function.

Affected Systems and Versions

Product: SmartThings Hub STH-ETH-250
Vendor: Samsung
Firmware Version: 0.20.17

Exploitation Mechanism

Attack Complexity: High
Attack Vector: Local
Privileges Required: High
Scope: Changed
The vulnerability can be exploited without user interaction.

Mitigation and Prevention

Steps to mitigate and prevent the CVE-2018-3917 vulnerability.

Immediate Steps to Take

Update the firmware of the SmartThings Hub to a non-vulnerable version.
Implement network segmentation to limit access to vulnerable devices.

Long-Term Security Practices

Regularly update firmware and security patches for all IoT devices.
Monitor network traffic for any suspicious activities that could indicate an exploit attempt.

Patching and Updates

Samsung may release patches or updates to address the vulnerability. Stay informed about security advisories from the vendor.