CVE-2018-3872 : Vulnerability Insights and Analysis
Learn about CVE-2018-3872, a critical buffer overflow vulnerability in Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17, impacting confidentiality, integrity, and availability. Find mitigation steps and prevention measures here.
Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17 contains a critical buffer overflow vulnerability in its HTTP server's credentials handler, allowing attackers to trigger a stack-based buffer overflow through a crafted HTTP request.
Understanding CVE-2018-3872
This CVE involves a security flaw in the credentials handler of Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17, leading to a buffer overflow vulnerability.
What is CVE-2018-3872?
The vulnerability arises from a buffer overflow in the video-core process due to mishandling the videoHostUrl field from a user-controlled JSON payload.
The Impact of CVE-2018-3872
The CVSS score for this CVE is 9.9 (Critical), with high impacts on confidentiality, integrity, and availability. The attack complexity is low, and the attack vector is through the network.
Technical Details of CVE-2018-3872
This section provides more in-depth technical insights into the vulnerability.
Vulnerability Description
The HTTP server of Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17 is susceptible to a buffer overflow in the credentials handler, triggered by extracting the videoHostUrl field from a user-controlled JSON payload.
Affected Systems and Versions
- Product: Samsung SmartThings Hub STH-ETH-250
- Vendor: Samsung
- Firmware Version: 0.20.17
Exploitation Mechanism
The vulnerability can be exploited by sending a specifically crafted HTTP request to the system, causing a stack-based buffer overflow in the video-core process.
Mitigation and Prevention
To address CVE-2018-3872, follow these mitigation strategies:
Immediate Steps to Take
- Disable remote access to the affected device if not required.
- Apply vendor-supplied patches or updates promptly.
Long-Term Security Practices
- Regularly update firmware and software to the latest versions.
- Implement network segmentation to limit the impact of potential attacks.
Patching and Updates
- Stay informed about security advisories from Samsung and apply patches as soon as they are available.