CVE-2023-46643 - Unauthenticated Reflected Cross-Site Scripting (XSS) Vulnerability Found in GARY JEZORSKI CloudNet360 Plugin (<= 3.2. versions)

GARY JEZORSKI's CloudNet360 plugin versions prior to and including 3.2. are affected by an unauthenticated reflected cross-site scripting (XSS) vulnerability. This vulnerability allows an attacker to perform various malicious actions, such as stealing user credentials, redirecting users to phishing websites, or injecting malicious scripts to compromise the end-user's browser.

Description

CloudNet360, developed by GARY JEZORSKI, is a popular plugin used to integrate several online services and automate businesses. Unfortunately, the plugin has a significant security flaw in versions <= 3.2., which might let attackers exploit an XSS vulnerability.

Attackers can inject malicious scripts through a GET request containing a specially crafted parameter. When the victim clicks on a crafted URL, the injected script will execute in their browser, giving the attacker full control over the victim's browser activities.

The vulnerability has been assigned the Common Vulnerabilities and Exposures (CVE) identifier CVE-2023-46643.

Here's a proof-of-concept (PoC) code snippet that showcases the vulnerability

<!--Injecting a simple alert script-->
<a href="http://vulnerable-website.com/plugin.php?some_parameter=<script>alert('XSS')</script>">Click me!</a>

In the above example, the crafted URL with the injected script will trigger an alert "XSS" on the victim's browser when the victim clicks on the "Click me!" link.

Steps to Reproduce

1. Replace 'http://vulnerable-website.com' with the actual domain where the CloudNet360 plugin (<= 3.2. versions) is installed.

Share the crafted link with the victim through an email, instant messaging, or social media.

3. When the victim clicks on the link, they'll be redirected to the vulnerable website, and the injected script will execute.

Original References

- GARY JEZORSKI's CloudNet360 Plugin (<= 3.2. versions): https://www.garyj-cloudnet360.com/plugin-info
- CVE-2023-46643: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-46643
- *Not available yet*: OWASP – Cross-Site Scripting (XSS): https://owasp.org/www-community/attacks/xss/

Recommendations

If you are using GARY JEZORSKI's CloudNet360 plugin with a version <= 3.2., it is highly recommended to update the plugin to the latest version, which has the vulnerability fixed. If the latest version is not available or cannot be applied immediately, using a Web Application Firewall (WAF) to filter the incoming requests is a temporary solution.

General security best practices, such as input validation, proper output encoding, and Content Security Policy (CSP) implementation, can help prevent similar vulnerabilities in the future.

Conclusion

It is essential to keep your plugins and software up-to-date to avoid falling victim to exploits and vulnerabilities like CVE-2023-46643. By following best practices and regularly scanning your code for vulnerabilities, you can reduce the risk associated with integrating third-party plugins and software into your application stack.

Timeline

Published on: 11/08/2023 17:15:07 UTC
Last modified on: 11/15/2023 17:37:46 UTC