CVE-2023-51736 Explained : Impact and Mitigation

A stored Cross Site Scripting (XSS) vulnerability has been identified in Skyworth Router CM5100, version 4.1.1.24, allowing remote attackers to perform malicious attacks on targeted systems.

Understanding CVE-2023-51736

This CVE-2023-51736 is a critical vulnerability reported by Sushant Mane, Parul Sindhwad, Tushar Nagrare, and Dr. Faruk Kazi from CoE-CNDS Lab, VJTI Mumbai, India.

What is CVE-2023-51736?

This vulnerability exists in Skyworth Router CM5100, version 4.1.1.24, due to insufficient user input validation for the L2TP/PPTP Username parameter at its web interface. Remote attackers can exploit this by supplying crafted input, leading to stored XSS attacks on vulnerable systems.

The Impact of CVE-2023-51736

Successful exploitation of this vulnerability could enable attackers to execute malicious scripts on targeted systems, potentially compromising user data and system integrity.

Technical Details of CVE-2023-51736

Vulnerability Description

The vulnerability stems from inadequate validation of user-supplied input for the L2TP/PPTP Username parameter in Skyworth Router CM5100, version 4.1.1.24, allowing remote attackers to execute stored XSS attacks.

Affected Systems and Versions

The affected product is Skyworth Router CM5100, version 4.1.1.24, with the custom version 0, impacting systems that do not have the latest patch installed.

Exploitation Mechanism

Remote attackers can exploit this vulnerability by providing specially crafted input to the L2TP/PPTP Username parameter at the web interface of the targeted system, leading to stored XSS attacks.

Mitigation and Prevention

Immediate Steps to Take

To mitigate the risk associated with CVE-2023-51736, users are advised to upgrade to the latest version 4.1.1.25 or later, which includes necessary security patches.

Long-Term Security Practices

Implement robust input validation mechanisms, conduct regular security audits, and stay informed about potential vulnerabilities in networking equipment.

Patching and Updates

Regularly check for updates and security bulletins from the vendor, applying patches promptly to ensure the security of networking devices.