CVE-2018-11689 : Exploit Details and Defense Strategies

This CVE-2018-11689 article provides insights into a cross-site scripting vulnerability affecting Hanwha and Samsung DVR Web Viewers.

Understanding CVE-2018-11689

What is CVE-2018-11689?

The /cgi-bin/webviewer_login_page data3 parameter in Hanwha DVR 2.17 Web Viewer and Samsung DVR Smart Viewer is vulnerable to XSS attacks due to shared codebase.

The Impact of CVE-2018-11689

The vulnerability allows attackers to execute malicious scripts in the context of a user's session, potentially leading to unauthorized actions.

Technical Details of CVE-2018-11689

Vulnerability Description

XSS vulnerability in /cgi-bin/webviewer_login_page data3 parameter
Shared codebase between Samsung and Hanwha versions

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions: Not applicable

Exploitation Mechanism

Attackers inject malicious scripts via the vulnerable data3 parameter
Scripts execute in the user's session, posing a security risk

Mitigation and Prevention

Immediate Steps to Take

Disable the /cgi-bin/webviewer_login_page endpoint if not essential
Implement input validation to sanitize user-supplied data
Regularly monitor and audit web viewer activities

Long-Term Security Practices

Conduct security assessments and code reviews regularly
Train developers and administrators on secure coding practices
Stay informed about security updates and best practices

Patching and Updates

Apply patches or updates provided by the vendor to address the XSS vulnerability
Keep the web viewer software up to date to mitigate security risks