WSO2 carbon-registry Request Parameter cross site scripting

Successful exploitation of CVE-2022-4521 allows an attacker to inject arbitrary JavaScript code into the Carbon Registry application. This can lead to various malicious actions, including stealing user session cookies, redirecting users to phishing sites, or defacing the application's interface. The impact is particularly severe if the Carbon Registry is used to manage sensitive data or control access to critical systems. An attacker could potentially gain unauthorized access to resources and perform actions on behalf of legitimate users. While the CVSS score is LOW, the potential for user compromise and data theft warrants immediate attention.

Organizations using WSO2 Carbon Registry for identity and access management, particularly those running versions 4.8.0 through 4.8.6, are at risk. Environments where Carbon Registry is exposed directly to the internet or integrated with other critical systems are at higher risk. Shared hosting environments utilizing Carbon Registry are also vulnerable.

• linux / server: Monitor Carbon Registry logs for unusual activity related to the parentPath/path/username/path/profile_menu parameter. Use journalctl -f to observe real-time log entries. • generic web: Use curl to test the affected endpoint with various payloads containing <script> tags. Example: curl 'http://your-carbon-registry/path?parentPath/path/username/path/profile_menu=<script>alert(1)</script>' • database (mysql): If Carbon Registry uses a database, check for suspicious entries in the user profiles table that might indicate a successful XSS attack.

1. 2022-12-15Disclosure

   disclosure

1. Reservado2022-12-15
2. Publicada2022-12-15
3. Modificada2024-08-03
4. EPSS atualizado2026-04-02

The primary mitigation for CVE-2022-4521 is to upgrade WSO2 Carbon Registry to version 4.8.7 or later, which includes the necessary fix (patch 9f967abfde9317bee2cda469dbc09b57d539f2cc). If upgrading is not immediately feasible, consider implementing input validation and sanitization on the parentPath/path/username/path/profile_menu parameter to prevent malicious input. Web application firewalls (WAFs) configured to detect and block XSS attacks can also provide a temporary layer of protection. After upgrading, verify the fix by attempting to inject a simple JavaScript payload into the vulnerable parameter and confirming that it is properly sanitized.