o [NSE] Added a MySQL audit script and a rulebase that supports auditing a

subset of the MySQL CIS 1.0.2 Benchmark. [Patrik]

scripts/mysql-audit.nse

@@ -0,0 +1,170 @@
+description = [[
+Audit MySQL database server
+]]
+
+
+---
+-- @usage
+-- nmap -p 3306 --script mysql-audit --script-args "mysql-audit.username='root', \
+-- 	mysql-audit.password='foobar',mysql-audit.filename='nselib/data/mysql-cis.audit'"
+--
+-- @args mysql-audit.username the username with which to connect to the database
+-- @args mysql-audit.password the password with which to connect to the database
+-- @args mysql-audit.filename the name of the file containing the audit rulebase
+--
+-- @output
+-- PORT     STATE SERVICE
+-- 3306/tcp open  mysql
+-- | mysql-audit: 
+-- |   CIS MySQL Benchmarks v1.0.2
+-- |       3.1: Skip symbolic links => PASS
+-- |       3.2: Logs not on system partition => PASS
+-- |       3.2: Logs not on database partition => PASS
+-- |       4.1: Supported version of MySQL => REVIEW
+-- |         Version: 5.1.54-1ubuntu4
+-- |       4.4: Remove test database => PASS
+-- |       4.5: Change admin account name => FAIL
+-- |       4.7: Verify Secure Password Hashes => PASS
+-- |       4.9: Wildcards in user hostname => FAIL
+-- |         The following users were found with wildcards in hostname
+-- |           root
+-- |           super
+-- |           super2
+-- |       4.10: No blank passwords => PASS
+-- |       4.11: Anonymous account => PASS
+-- |       5.1: Access to mysql database => REVIEW
+-- |         Verify the following users that have access to the MySQL database
+-- |           user              host
+-- |           root              localhost
+-- |           root              patrik-11
+-- |           root              127.0.0.1
+-- |           debian-sys-maint  localhost
+-- |           root              %
+-- |           super             %
+-- |       5.2: Do not grant FILE privileges to non Admin users => REVIEW
+-- |         The following users were found having the FILE privilege
+-- |           super
+-- |           super2
+-- |       5.3: Do not grant PROCESS privileges to non Admin users => REVIEW
+-- |         The following users were found having the PROCESS privilege
+-- |           super
+-- |       5.4: Do not grant SUPER privileges to non Admin users => REVIEW
+-- |         The following users were found having the SUPER privilege
+-- |           super
+-- |       5.5: Do not grant SHUTDOWN privileges to non Admin users => REVIEW
+-- |         The following users were found having the SHUTDOWN privilege
+-- |           super
+-- |       5.6: Do not grant CREATE USER privileges to non Admin users => REVIEW
+-- |         The following users were found having the CREATE USER privilege
+-- |           super
+-- |       5.7: Do not grant RELOAD privileges to non Admin users => REVIEW
+-- |         The following users were found having the RELOAD privilege
+-- |           super
+-- |       5.8: Do not grant GRANT privileges to non Admin users => PASS
+-- |       6.2: Disable Load data local => FAIL
+-- |       6.3: Disable old password hashing => PASS
+-- |       6.4: Safe show database => FAIL
+-- |       6.5: Secure auth => FAIL
+-- |       6.6: Grant tables => FAIL
+-- |       6.7: Skip merge => FAIL
+-- |       6.8: Skip networking => FAIL
+-- |       6.9: Safe user create => FAIL
+-- |       6.10: Skip symbolic links => FAIL
+-- |       
+-- |_      The audit was performed using the db-account: root
+
+-- Version 0.1
+-- Created 05/29/2011 - v0.1 - created by Patrik Karlsson <patrik@cqure.net>
+
+author = "Patrik Karlsson"
+license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
+categories = {"discovery", "safe"}
+
+require 'shortport'
+require 'mysql'
+
+portrule = shortport.port_or_service(3306, "mysql")
+local TEMPLATE_NAME = ""
+
+local function loadAuditRulebase( filename )
+
+	local file, err = loadfile(filename)
+	local rules = {}
+
+	if ( not(file) ) then
+		return false, ("ERROR: Failed to load rulebase:\n%s"):format(err)
+	end
+	
+	setfenv(file, setmetatable({
+		test = function(t) table.insert(rules, t) end;
+	}, {__index = _G}))
+	
+	file()
+	TEMPLATE_NAME = getfenv(file)["TEMPLATE_NAME"]
+	return true, rules
+end
+
+action = function( host, port )
+
+	local username = stdnse.get_script_args("mysql-audit.username")
+	local password = stdnse.get_script_args("mysql-audit.password")
+	local filename = stdnse.get_script_args("mysql-audit.filename")
+
+	if ( not(filename) ) then
+		return "\n  No audit rulebase file was supplied (see mysql-audit.filename)"
+	end
+
+	if ( not(username) ) then
+		return "\n  No username was supplied (see mysql-audit.username)"
+	end
+
+	local status, tests = loadAuditRulebase( filename )
+	if( not(status) ) then return rules end
+
+	local socket = nmap.new_socket()
+	status = socket:connect(host, port)
+
+	local response
+	status, response = mysql.receiveGreeting( socket )
+	if ( not(status) ) then return response end
+	
+	status, response = mysql.loginRequest( socket, { authversion = "post41", charset = response.charset }, username, password, response.salt )
+
+	if ( not(status) ) then return "ERROR: Failed to authenticate" end
+	local results = {}
+
+	for _, test in ipairs(tests) do
+		local queries = ( "string" == type(test.sql) ) and { test.sql } or test.sql
+		local rowstab = {}
+		
+		for _, query in ipairs(queries) do
+			local row
+			status, row = mysql.sqlQuery( socket, query )
+			if ( not(status) ) then
+				table.insert( results, { ("%s: ERROR: Failed to execute SQL statement"):format(test.id) } )
+			else
+				table.insert(rowstab, row)
+			end
+		end
+		
+		if ( #rowstab > 0 ) then
+			local result_part = {}
+			local res = test.check(rowstab)
+			local status, data = res.status, res.result
+			status = ( res.review and "REVIEW" ) or (status and "PASS" or "FAIL")
+			
+			table.insert( result_part, ("%s: %s => %s"):format(test.id, test.desc, status) )
+			if ( data ) then
+				table.insert(result_part, { data } )
+			end
+			table.insert( results, result_part )
+		end
+	end
+
+	socket:close()
+	results.name = TEMPLATE_NAME
+
+	table.insert(results, {"", ("The audit was performed using the db-account: %s"):format(username)})
+
+	return stdnse.format_output(true, { results })
+end