CVE-2018-3915 : What You Need to Know

A buffer overflow vulnerability in the Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17 allows attackers to execute arbitrary code by overflowing the destination buffer.

Understanding CVE-2018-3915

This CVE involves a buffer overflow flaw in the video-core HTTP server of the Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17.

What is CVE-2018-3915?

The vulnerability arises when the strcpy function call overflows a 64-byte capacity buffer during the retrieval of database fields.
Attackers can exploit this flaw by sending a "bucket" value of any length.

The Impact of CVE-2018-3915

CVSS Score: 7.5 (High)
Severity: High
Attack Vector: Local
Attack Complexity: High
Privileges Required: High
Scope: Changed
Confidentiality, Integrity, and Availability Impact: High
This vulnerability poses a significant risk to the confidentiality, integrity, and availability of the affected system.

Technical Details of CVE-2018-3915

This section delves into the technical aspects of the CVE.

Vulnerability Description

The vulnerability is classified as a Classic Buffer Overflow.
It occurs in the video-core HTTP server of the Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17.

Affected Systems and Versions

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

Exploitation Mechanism

Attackers can exploit the vulnerability by sending a specially crafted "bucket" value to trigger the buffer overflow.

Mitigation and Prevention

Protecting systems from CVE-2018-3915 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the firmware to a patched version that addresses the buffer overflow vulnerability.
Implement network segmentation to limit the impact of potential attacks.

Long-Term Security Practices

Regularly monitor and audit network traffic for any suspicious activities.
Conduct security training for personnel to recognize and respond to potential threats.

Patching and Updates

Stay informed about security updates and patches released by Samsung for the SmartThings Hub STH-ETH-250.