NetGear C DSL Router R0318 - Multiple Web Vulnerabilities

Document Title:
===============
NetGear C DSL Router R0318 - Multiple Web Vulnerabilities



Release Date:
=============
2011-08-18


Vulnerability Laboratory ID (VL-ID):
====================================
40


Product & Service Introduction:
===============================
RO318 ergänzt Produktfamilie von Internet-Gateways für Kleinbetriebe und bietet Schutz gegen Hacker-Attacken. Dieser leistungsstarke 
8-Port Kabel/DSL-Security Router von NETGEAR ist ideal für kleinere Netzwerke. Der RO318 bietet alle wesentlichen Leistungsmerkmale 
des preisgekrönten Web Safe Routers RP114. Ein zusätzliches Paket von Sicherheitsmerkmalen sowie ein 8-Port-Switch machen den RO318 
zu einer idealen Lösung für kleinere Business-Netzwerke, die herkömmlichen am Markt befindlichen NAT (Network Address Translation)-Routern 
überlegen ist. NETGEARs Kabel/DSL Security Router RO318 bietet zusätzliche Sicherheit für das Netzwerk und besitzt neben dem Kabel/DSL 
Ethernet-Port noch acht 10/100 MBit/s-Ports für den Anschluss von PCs und anderen Geräten im LAN (Local Area Network). Der RO318 bietet 
drei wichtige Merkmale, die bei gängigen NAT-Routern heute nicht zu finden sind: Stateful Packet Inspection (SPI), statische Inhaltsfilterung 
mit Aufzeichnung sowie Protokollierung und Benachrichtigungen per E-Mail.

(Copy of the Vendor Homepage: http://www.netgear.com/)


Abstract Advisory Information:
==============================
The Vulnerability-Lab Research Team discovered multiple Web Vulnerabilities on NetGears Cable DSL Security Router R0 318.


Vulnerability Disclosure Timeline:
==================================
2011-08-18:	Public or Non-Public Disclosure


Discovery Status:
=================
Published


Affected Product(s):
====================

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


Severity Level:
===============
Medium


Technical Details & Description:
================================
Multiple input validation vulnerabilities(persistent) are detected on NetGear s Cable DSL Security Router R0 318. A remote attacker 
can manipulate the router interface requests via persistent script code include or can manipulate specific requests with user inter-action 
via evil cross site requests.


Vulnerable Module(s): 
									[+] System > Systemname & Domainname
									[+] System > DDNS Settings
									[+] System > Password

									[+] Security > E-Mail Server
									[+] Security > Keyword

									[+] WZ-Setup > ISP Parameters for Internet Access

		
			
Pictures:
									../1.png
									../2.png


Proof of Concept (PoC):
=======================
The vulnerabilities can be exploited by remote attackers or local privileged user accounts.
For demonstration or reproduce  ...



Code Review: Systemname & Domainname

<td WIDTH="10%"> </TD>
</TR>
<TR> 
                      <td WIDTH="10%"> </TD>
<td bgcolor="#ffbf3b"> 
                        <DIV ALIGN=center>
                          <table WIDTH="450" BORDER="0" CELLSPACING="0" CELLPADDING="0">
                            <TR> 
                              <TD>  </TD>
</TR>
<TR>
                              <TD><HR>
</TD>
</TR>
</TABLE>
<table WIDTH="400" BORDER="0" CELLSPACING="0" CELLPADDING="0">
                            <TR> 
                              <TD><FONT SIZE="2" face="Arial, Helvetica, sans-serif"><B>
System Name                                      </B></FONT></TD>
<TD><INPUT TYPE="TEXT" NAME="sysSystemName" SIZE="20" MAXLENGTH="30" VALUE="flipdot KS">
                              </TD>
</TR>
<TR> 
                              <TD><FONT SIZE="2" face="Arial, Helvetica, sans-serif"><B>

Domain Name                                      </B></FONT></TD>
<TD><INPUT TYPE="TEXT" NAME="sysDomainName" SIZE="32" MAXLENGTH="32" VALUE=">"<INCLUDE PERSISTENT SCRIPT_CODE HERE!!!>">
                              </TD>
</TR>
<TR> 
                              <TD> 
                              </TD>
</TR>
<TR> 
                              <TD> 
                              </TD>
</TR>
</TABLE>




Code Review: Password Settings

<TABLE BORDER="0" CELLSPACING="0" CELLPADDING="0">
                            <TR> 
                              <td WIDTH="150"><FONT SIZE="2" face="Arial, Helvetica, sans-serif"><B>
Old Password                                   </B></FONT></TD>
<td WIDTH="250">
<INPUT TYPE="PASSWORD" NAME="sysOldPasswd" SIZE="20" MAXLENGTH="30" VALUE="INCLUDE PERSISTENT SCRIPT_CODE HERE!!!">

                              </TD>
</TR>
<TR> 
                              <td WIDTH="150"><FONT SIZE="2" face="Arial, Helvetica, sans-serif"><B> 
New Password                                     </B></FONT></TD>
<td WIDTH="250">
<INPUT TYPE="PASSWORD" NAME="sysNewPasswd" SIZE="20" MAXLENGTH="30" VALUE="INCLUDE PERSISTENT SCRIPT_CODE HERE!!!">
                              </TD>
</TR>
<TR> 
                              <td WIDTH="150"><FONT SIZE="2" face="Arial, Helvetica, sans-serif"><B> 
Retype to Confirm                                            </B></FONT></TD>
<td WIDTH="250">

<INPUT TYPE="PASSWORD" NAME="sysConfirmPasswd" SIZE="20" MAXLENGTH="30" VALUE="">
                              </TD>
</TR>
</TABLE>




Code Review: E-Mail Server

         <TD COLSPAN="4"><font face="Times New Roman, Times, serif" size="3"><B> 
              <font face="Arial, Helvetica, sans-serif">

Address Info: 			  </FONT></B></FONT></TD>
</TR>
<TR> 
            <td WIDTH="12"> </TD>
<td WIDTH="108"><FONT SIZE="2" face="Times New Roman, Times, serif"> 
              <font face="Arial, Helvetica, sans-serif">
Mail Server: 			  </FONT> </FONT></TD>
<TD COLSPAN="2"> 
<INPUT TYPE="TEXT" NAME="DoSAlert_mailServer" SIZE="30" MAXLENGTH="127" VALUE="<INCLUDE PERSISTENT SCRIPT_CODE HERE!!!>">
			  <FONT SIZE="2"> <font face="Arial, Helvetica, sans-serif">
(Outgoing SMTP Server Name)			  </FONT></FONT></TD>



Code Review: Keyword

</TR>
<TR> 
            <td WIDTH="12"> </TD>
<td WIDTH="588" ALIGN=center><font face="Arial, Helvetica, sans-serif" size="2">
Keyword: 			</FONT> 
<INPUT TYPE="TEXT" NAME="DoSKeyWord_Domain" SIZE="48" MAXLENGTH="127" VALUE="<INCLUDE PERSISTENT SCRIPT_CODE HERE!!!">
			</TD>
</TR>
<TR ALIGN=center> 
            <TD COLSPAN="2">
<INPUT TYPE="SUBMIT" NAME="DoSKeyWord_AddKeyword" VALUE="Add Keyword" onClick="doSubmit();">
			</TD>
</TR>
<TR> 
            <TD COLSPAN="2"> 
              <hr WIDTH="400" ALIGN=center>
            </TD>
</TR>




Code Review: ISP Parameters for Internet Access

<table WIDTH="480" BORDER="0" CELLSPACING="0" CELLPADDING="0">
                    <TR> 
                      <TD><B><font face="Arial, Helvetica, sans-serif" font size="2">
Encapsulation                        </FONT></B></TD>
<TD><SELECT NAME="wzWAN_Encap1" SIZE="1" onchange="dowzWANChange(this.selectedIndex)">
<OPTION VALUE=0 SELECTED>Ethernet
<OPTION VALUE=1>PPP over Ethernet
<OPTION VALUE=2>PPTP
</SELECT>                      </TD>
</TR>
<TR> 
                      <TD><B><font face="Arial, Helvetica, sans-serif" size="2">

Service Type                         </FONT></B></TD>
<TD><SELECT NAME="wzWAN1_ServiceType" SIZE="1" onchange="dowzWAN1Change(this.selectedIndex)">
<OPTION VALUE=0>Standard
<OPTION VALUE=1>RR-Toshiba
<OPTION VALUE=2>RR-Manager
<OPTION VALUE=3 SELECTED>Bigpond/Telstra
</SELECT>                        </TD>
</TR>
<TR> 
                      <TD><B><font face="Arial, Helvetica, sans-serif" size="2">
User Name                            </FONT></B></TD>
<TD><INPUT TYPE="TEXT" NAME="wzWAN1_UserName" SIZE="30" MAXLENGTH="45" VALUE="<INCLUDE PERSISTENT SCRIPT_CODE HERE!!!>">
                      </TD>
</TR>
<TR> 



... & a vulnerable reboot + firmware reset link without confirmation ?! ... http://192.168.0.1/ResetDone.html


Security Risk:
==============
The security risk of the vulnerabilities are estimated as medium because of multiple persistent input validation vulnerabilities.


Credits & Authors:
==================
Vulnerability Research Laboratory


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