CVE-2018-3907 : Vulnerability Insights and Analysis

A vulnerability in the REST parser of the video-core's HTTP server used in the Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17 allows for HTTP Request Smuggling, potentially leading to critical consequences.

Understanding CVE-2018-3907

This CVE involves a critical vulnerability in the Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17, impacting the video-core's HTTP server.

What is CVE-2018-3907?

The vulnerability arises from mishandling pipelined HTTP requests by the video-core process, leading to the overwriting of the previously parsed HTTP method, specifically the 'on_url' callback.

The Impact of CVE-2018-3907

CVSS Base Score: 9.1 (Critical)
Attack Vector: Network
Attack Complexity: Low
Confidentiality Impact: None
Integrity Impact: High
Availability Impact: High
Privileges Required: None
User Interaction: None
Scope: Unchanged

Technical Details of CVE-2018-3907

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability allows an attacker to exploit the video-core's HTTP server in the Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17 by sending a crafted HTTP request.

Affected Systems and Versions

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

Exploitation Mechanism

The vulnerability occurs due to the mishandling of pipelined HTTP requests, enabling an attacker to overwrite the 'on_url' callback through a crafted HTTP request.

Mitigation and Prevention

Protecting systems from CVE-2018-3907 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Monitor network traffic for any suspicious activity.
Implement network segmentation to limit the impact of potential attacks.

Long-Term Security Practices

Regularly update firmware and software to mitigate known vulnerabilities.
Conduct security assessments and penetration testing to identify and address weaknesses.

Patching and Updates

Regularly check for security updates and patches from Samsung and Talos to address the CVE-2018-3907 vulnerability.