CVE-2023-31853 : Security Advisory and Response

Cudy LT400 1.13.4 is vulnerable to Cross Site Scripting (XSS) in /cgi-bin/luci/admin/network/bandwidth via the icon parameter.

Understanding CVE-2023-31853

This section will provide an overview of CVE-2023-31853 and its impact.

What is CVE-2023-31853?

CVE-2023-31853 refers to a Cross Site Scripting (XSS) vulnerability in Cudy LT400 1.13.4, specifically in the /cgi-bin/luci/admin/network/bandwidth URL through the icon parameter. This vulnerability could allow an attacker to execute malicious scripts on the victim's browser.

The Impact of CVE-2023-31853

The impact of this vulnerability is the potential for attackers to inject and execute malicious scripts on the affected web application, leading to various attacks such as session hijacking, defacement, and data theft.

Technical Details of CVE-2023-31853

This section will delve into the technical aspects of CVE-2023-31853.

Vulnerability Description

The vulnerability arises from inadequate input validation of the icon parameter in the /cgi-bin/luci/admin/network/bandwidth URL, enabling an attacker to inject arbitrary scripts.

Affected Systems and Versions

The affected system is Cudy LT400 version 1.13.4. Any system running this specific version is vulnerable to the XSS exploit.

Exploitation Mechanism

Exploiting this vulnerability involves crafting a malicious script and injecting it through the icon parameter in the bandwidth URL, tricking the application into executing the script.

Mitigation and Prevention

In this section, we will discuss steps to mitigate and prevent the exploitation of CVE-2023-31853.

Immediate Steps to Take

Disable access to the /cgi-bin/luci/admin/network/bandwidth URL if not essential.
Implement proper input validation mechanisms to sanitize user inputs.
Regularly monitor and scan for any suspicious activities on the web application.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify and address vulnerabilities.
Keep software and applications updated to prevent known security flaws from being exploited.

Patching and Updates

Stay informed about security updates provided by Cudy for the LT400 series. Apply patches promptly to remediate the XSS vulnerability.