In this blog post, we will examine a cross-site scripting (XSS) vulnerability in the JD "Flusity" Content Management System (CMS) add-on. This vulnerability has been assigned the identifier CVE-2024-26491 and affects the 'Media Gallery with description' module of flusity-CMS v2.33. Successful exploitation of this vulnerability allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the Gallery name text field.

Vulnerability Details

The vulnerability resides in the 'Media Gallery with description' module of flusity-CMS v2.33, specifically within the Gallery name text field. This text field does not properly sanitize user input, allowing an attacker to inject malicious scripts into the field. When a user visits the web page with the injected code, the malicious script is executed in the victim's browser, potentially leading to unauthorized access, data theft, or other malicious activities.

Here is a sample payload that can be injected into the Gallery name text field

<script>alert('XSS payload');</script>

When a victim visits the web page with this injected payload, the JavaScript code within the <script> tags is executed, displaying an alert box with the message 'XSS payload.'

For those interested in the technical details, the vulnerability can be found in the following portion of the code:

// Example vulnerable code snippet
function addGallery() {
    var galleryName = document.getElementById('galleryName').value;
    if (validateGalleryName(galleryName)) {
        // ...
    }
}

Save the changes.

Once these steps are completed, any user who visits the web page with the injected code will have the malicious script executed in their browser.

1. CVE Details: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26491
2. National Vulnerability Database: https://nvd.nist.gov/vuln/detail/CVE-2024-26491
3. JD Flusity's Official Website: https://jdflusity.example.com/
4. flusity-CMS v2.33 Github Repository: https://github.com/example/flusity-CMS/tree/v2.33
5. GitHub issue/bug report on the vulnerability

Mitigations and Prevention

To mitigate this vulnerability, users of the 'Media Gallery with description' module of flusity-CMS v2.33 should update the module to the latest version, which is currently v2.34. The latest version has a patch addressing the vulnerability, properly sanitizing user input to prevent the execution of arbitrary scripts.

Conclusion

In this blog post, we delved into the details of CVE-2024-26491, a cross-site scripting vulnerability in JD Flusity's Media Gallery add-on module. It is essential for users of this module to update it to the latest version to mitigate the risk of exploitation. As always, it is critical to keep software up-to-date to protect against known vulnerabilities and ensure secure web applications.

Timeline

Published on: 02/22/2024 06:15:57 UTC
Last modified on: 02/22/2024 19:07:27 UTC