CVE-2018-3893 : Security Advisory and Response

A vulnerability in the HTTP server of the Samsung SmartThings Hub STH-ETH-250 with Firmware version 0.20.17 allows for a stack-based buffer overflow through the /cameras/XXXX/clips handler of the video-core's HTTP server.

Understanding CVE-2018-3893

This CVE entry describes a critical vulnerability affecting Samsung SmartThings Hub STH-ETH-250.

What is CVE-2018-3893?

This vulnerability arises from the video-core process incorrectly handling user-controlled JSON payloads, leading to a stack-based buffer overflow.

The Impact of CVE-2018-3893

The vulnerability has a CVSS base score of 9.9, indicating a critical severity level with high impacts on confidentiality, integrity, and availability.

Technical Details of CVE-2018-3893

This section delves into the technical aspects of the CVE.

Vulnerability Description

The vulnerability allows an attacker to trigger a stack-based buffer overflow by sending a crafted HTTP request to the /cameras/XXXX/clips handler of the video-core's HTTP server.

Affected Systems and Versions

Samsung SmartThings Hub STH-ETH-250 with Firmware version 0.20.17

Exploitation Mechanism

Attacker sends an HTTP request to exploit the vulnerability

Mitigation and Prevention

Protecting systems from CVE-2018-3893 is crucial to maintaining security.

Immediate Steps to Take

Apply security patches provided by the vendor
Monitor network traffic for any suspicious activity
Restrict access to vulnerable systems

Long-Term Security Practices

Regularly update firmware and software to patch vulnerabilities
Conduct security assessments and penetration testing

Patching and Updates

Stay informed about security updates from Samsung
Apply patches promptly to mitigate the risk of exploitation