CVE-2018-3856 Explained : Impact and Mitigation

A potential security flaw has been discovered in the configuration of smart cameras using RTSP in the Samsung SmartThings Hub STH-ETH-250 with Firmware version 0.20.17. The vulnerability could allow an attacker to inject arbitrary operating system commands through improper handling of spaces in the URL field.

Understanding CVE-2018-3856

This CVE involves a critical vulnerability in the Samsung SmartThings Hub STH-ETH-250 with Firmware version 0.20.17.

What is CVE-2018-3856?

CVE-2018-3856 is a security flaw in the smart cameras RTSP configuration of the Samsung SmartThings Hub STH-ETH-250, potentially enabling attackers to execute arbitrary commands.

The Impact of CVE-2018-3856

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

Technical Details of CVE-2018-3856

This section provides detailed technical information about the CVE.

Vulnerability Description

The vulnerability arises from the improper handling of spaces in the URL field, allowing attackers to inject arbitrary operating system commands through a series of HTTP requests.

Affected Systems and Versions

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

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: Low
User Interaction: None
Scope: Changed
Exploitation could lead to high impacts on confidentiality, integrity, and availability.

Mitigation and Prevention

Protecting systems from CVE-2018-3856 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the firmware to the latest version provided by Samsung.
Implement network segmentation to limit the exposure of vulnerable devices.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

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

Patching and Updates

Samsung may release patches or updates to address the vulnerability. Stay informed about security advisories and apply patches promptly.