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Current File : //usr/share/nmap/scripts/mysql-empty-password.nse
description = [[
Checks for MySQL servers with an empty password for <code>root</code> or
<code>anonymous</code>.
]]

---
-- @output
-- 3306/tcp open  mysql
-- | mysql-empty-password:  
-- |   anonymous account has empty password
-- |_  root account has empty password

author = "Patrik Karlsson"
license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
categories = {"intrusive", "auth"}

require 'shortport'
require 'stdnse'
require 'mysql'

-- Version 0.3
-- Created 01/15/2010 - v0.1 - created by Patrik Karlsson <patrik@cqure.net>
-- Revised 01/23/2010 - v0.2 - revised by Patrik Karlsson, added anonymous account check
-- Revised 01/23/2010 - v0.3 - revised by Patrik Karlsson, fixed abort bug due to try of loginrequest

portrule = shortport.port_or_service(3306, "mysql")

action = function( host, port )

	local socket = nmap.new_socket()
	local result = {}
	local users = {"", "root"}

	-- set a reasonable timeout value
	socket:set_timeout(5000)
	
	for _, v in ipairs( users ) do
		local status, response = socket:connect(host, port)
		if( not(status) ) then return "  \n  ERROR: Failed to connect to mysql server" end
		
		status, response = mysql.receiveGreeting( socket )
		if ( not(status) ) then
			stdnse.print_debug(3, SCRIPT_NAME)
			socket:close()
			return response
		end
		
		status, response = mysql.loginRequest( socket, { authversion = "post41", charset = response.charset }, v, nil, response.salt )	
		if response.errorcode == 0 then
			table.insert(result, string.format("%s account has empty password", ( v=="" and "anonymous" or v ) ) )
			if nmap.registry.mysqlusers == nil then
				nmap.registry.mysqlusers = {}
			end
			nmap.registry.mysqlusers[v=="" and "anonymous" or v] = ""
		end
		socket:close()
	end
	
	return stdnse.format_output(true, result)	

end
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