CVE-2018-3867 : Vulnerability Insights and Analysis

A vulnerability in the samsungWifiScan callback notification of the HTTP server used in Samsung SmartThings Hub STH-ETH-250 devices with firmware version 0.20.17 allows for a stack-based buffer overflow in the video-core process, enabling attackers to exploit the system.

Understanding CVE-2018-3867

This CVE involves a critical vulnerability in Samsung SmartThings Hub STH-ETH-250 devices with specific firmware versions.

What is CVE-2018-3867?

The vulnerability arises from the mishandling of responses from smart cameras, leading to a stack-based buffer overflow.
Attackers can trigger this flaw by sending a sequence of HTTP requests.

The Impact of CVE-2018-3867

CVSS Score: 9.9 (Critical)
Attack Vector: Network
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High
Scope: Changed
Privileges Required: Low
User Interaction: None

Technical Details of CVE-2018-3867

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability allows for a stack-based buffer overflow in the video-core process of Samsung SmartThings Hub STH-ETH-250 devices.

Affected Systems and Versions

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

Exploitation Mechanism

Exploiting this vulnerability involves sending a sequence of HTTP requests to trigger the stack-based buffer overflow.

Mitigation and Prevention

Protecting systems from CVE-2018-3867 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the firmware of the SmartThings Hub STH-ETH-250 devices to a secure version.
Implement network segmentation to limit the impact of potential attacks.
Monitor network traffic for any suspicious HTTP requests.

Long-Term Security Practices

Regularly update and patch all devices and systems in the network.
Conduct security assessments and penetration testing to identify and address vulnerabilities.

Patching and Updates

Stay informed about security advisories from Samsung and apply patches promptly to mitigate the risk of exploitation.