Reflected XSS in Authentication Endpoint

Executive Summary

This is a Cross-Site Scripting (XSS) vulnerability where the Authentication Endpoint fails to properly encode user input. Attackers can inject malicious JavaScript payloads through crafted input, which may execute in a victim's browser when they access the affected page.

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Detection Guidance

To detect this XSS vulnerability in WSO2 products, inspect HTTP responses for unsanitized user input in the roleName parameter. Check for JavaScript execution in hidden input fields within JSP files. Use browser developer tools to monitor for reflected or stored XSS in authentication endpoints.

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Impact Analysis

Exploitation could allow attackers to redirect users to malicious sites, modify webpage content, or steal sensitive browser data. Session cookies are protected by the httpOnly flag, preventing direct session hijacking.

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Compliance Impact

This vulnerability could lead to unauthorized data exposure or modification, which may violate GDPR's data protection principles or HIPAA's security requirements for safeguarding sensitive information. Attackers could extract sensitive data from browsers, potentially exposing personal or health information.

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Mitigation Strategies

• Apply the security fix from the WSO2 Carbon Identity Framework repository by updating to version 5.25.x or later to ensure proper encoding of user-supplied input in the Authentication Endpoint.
• Review and sanitize all user inputs in authentication-related fields, particularly the roleName parameter, to prevent JavaScript injection.
• Monitor network traffic for unusual requests targeting the Authentication Endpoint that may indicate attempted exploitation.

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