Stored XSS in Crafty Controller Webhook URL Form

Executive Summary

This vulnerability is a stored cross-site scripting (XSS) flaw in Crafty Controller's Webhook URL form field. It allows a remote, authenticated attacker with limited permissions to inject malicious JavaScript code into the webhook URL. When this URL is rendered in the user interface, the script executes, potentially compromising user sessions or data.

Useful 0 Not Useful 0

Detection Guidance

Check Crafty Controller logs for unusual webhook URL entries containing script tags like <script>alert(document.cookie)</script>. Inspect network traffic for unexpected JavaScript execution when testing webhooks. Review user permissions for SERVER_CREATION role misuse.

Useful 0 Not Useful 0

Impact Analysis

An attacker could steal session cookies, perform actions on behalf of users, or manipulate the application's interface. For example, an attacker with SERVER_CREATION permissions could embed a script that captures admin credentials when the webhook is tested, leading to unauthorized access or data breaches.

Useful 0 Not Useful 0

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating GDPR's data protection principles or HIPAA's security requirements. If user sessions or data are compromised, organizations may face legal penalties, reputational damage, and compliance failures due to inadequate input sanitization and output encoding.

Useful 0 Not Useful 0

Mitigation Strategies

Update Crafty Controller to the latest version. Implement strict input validation for webhook URLs to block script tags. Encode all user inputs before rendering in the UI. Restrict SERVER_CREATION permissions to trusted users only.

Useful 0 Not Useful 0