Stored XSS in Adobe Experience Manager

Executive Summary

This vulnerability is a stored Cross-Site Scripting (XSS) issue where a low-privileged attacker can inject malicious scripts into vulnerable form fields. When a victim visits the affected page, the injected script executes in their browser.

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Detection Guidance

To detect this stored XSS vulnerability, inspect web application forms for improper input validation. Check form fields like search boxes, comment sections, or user profiles where low-privileged users can submit data. Use browser developer tools to monitor network requests for suspicious payloads. Test with basic XSS payloads like <script>alert(1)</script> in input fields and check if they execute.

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Impact Analysis

An attacker could steal session cookies, redirect users to malicious sites, or perform actions on behalf of the victim. It may also lead to unauthorized data access or defacement of the affected application.

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Compliance Impact

This vulnerability could violate GDPR by enabling unauthorized data access or processing. For HIPAA, it may compromise protected health information integrity or confidentiality. Compliance risks include data breaches and failure to protect sensitive user data.

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Mitigation Strategies

Implement input validation and output encoding for all form fields to prevent script injection. Sanitize user inputs and ensure only safe characters are processed. Regularly update and patch the affected application to the latest secure version.

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