#!/usr/bin/env python3 from pytm import TM, Server, Datastore, Dataflow, Boundary, Actor, Lambda tm = TM("my test tm") tm.description = "This is a sample threat model of a very simple system - a web-based comment system. The user enters comments and these are added to a database and displayed back to the user. The thought is that it is, though simple, a complete enough example to express meaningful threats." User_Web = Boundary("User/Web") Web_DB = Boundary("Web/DB") VPC = Boundary("AWS VPC") user = Actor("User") user.inBoundary = User_Web web = Server("Web Server") web.OS = "CloudOS" web.isHardened = True my_lambda = Lambda("cleanDBevery6hours") my_lambda.hasAccessControl = True my_lambda.inBoundary = Web_DB #my_lambda.inBoundary = VPC # TODO: need multiple boundaries capability for these situations db = Datastore("SQL Database") db.OS = "CentOS" db.isHardened = False db.inBoundary = Web_DB db.isSQL = True db.inScope = False my_lambda_to_db = Dataflow(my_lambda, db, "(λ)Periodically cleans DB")
tm = TM("my test tm") tm.description = "This is a sample threat model of a very simple system - a web-based comment system. The user enters comments and these are added to a database and displayed back to the user. The thought is that it is, though simple, a complete enough example to express meaningful threats." tm.isOrdered = True tm.mergeResponses = True internet = Boundary("Internet") server_db = Boundary("Server/DB") server_db.levels = [2] vpc = Boundary("AWS VPC") user = Actor("User") user.inBoundary = internet user.levels = [2] web = Server("Web Server") web.OS = "Ubuntu" web.isHardened = True web.sanitizesInput = False web.encodesOutput = True web.authorizesSource = False web.sourceFiles = ["pytm/json.py", "docs/template.md"] db = Datastore("SQL Database") db.OS = "CentOS" db.isHardened = False db.inBoundary = server_db db.isSQL = True db.inScope = True db.maxClassification = Classification.RESTRICTED db.levels = [2]
payment_online.isOrdered = True payment_online.mergeResponses = True Customer_Client_Web = Boundary("Customer/Internet") Merchant_Web = Boundary("Merchant/Web") Stripe_API = Boundary("Stripe/Web") customer = Actor("Customer") customer_client = ExternalEntity("Customer Client") customer_client.inBoundary = Customer_Client_Web # user.levels = [2] merchant_web = Server("Merchant Web Server") merchant_web.inBoundary = Merchant_Web merchant_web.OS = "Ubuntu" merchant_web.isHardened = True merchant_web.onAWS = True # web.levels = [2] stripe_api = ExternalEntity("Stripe API service") stripe_api.inBoundary = Stripe_API stripe_api.onAWS = False stripe_process = Process("Stripe Payment Service") stripe_process.inBoundary = Stripe_API customer_to_customer_client = Dataflow( customer, customer_client, "Customer logs into the merchant site (*)") customer_to_customer_client.protocol = "HTTPS" customer_to_customer_client.dstPort = 443