WeGIA Reflected Cross-Site Scripting Vulnerability in personalizacao_imagem.php Endpoint

A reflected cross-site scripting vulnerability has been identified in the WeGIA application, specifically in versions prior to 3.4.6. The issue resides in the personalizacao_imagem.php endpoint, where the application fails to properly validate and sanitize user inputs in the err parameter. This oversight allows attackers to inject malicious scripts that are executed in the context of the user's browser.

Impact

Exploitation of this vulnerability allows for reflected cross-site scripting, where injected scripts are executed in the context of the user's browser. This could lead to capturing login credentials, performing actions on behalf of the user, virtual defacement of the website, or redirecting the user to a competing site.

Reproduction

To reproduce this vulnerability, send a GET request to the personalizacao_imagem.php endpoint with the err parameter containing the injected script, such as a script tag including JavaScript code, like an alert displaying the document's cookies. The injected script will be executed in the user's browser, demonstrating the cross-site scripting vulnerability.

Remediation

Users can upgrade to WeGIA version 3.4.6 or later, where this vulnerability has been fixed.