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HTB22883: XSS vulnerability in LotusCMS



Vulnerability ID: HTB22883
Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_lotuscms.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 "core/model/GeneralSettingsModel.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=GeneralSettings&page=edit"; method="post" name="main">
<input type="hidden" name="title" value='Lotus CMS"><script>alert(document.cookie)</script>'>
</form>
<script>
document.main.submit();
</script>