# Author: Hubert Kario, (c) 2016 # Released under Gnu GPL v2.0, see LICENSE file for details from __future__ import print_function import traceback import sys import getopt import re from itertools import chain from random import sample from tlsfuzzer.runner import Runner from tlsfuzzer.messages import Connect, ClientHelloGenerator, \ ClientKeyExchangeGenerator, ChangeCipherSpecGenerator, \ FinishedGenerator, ApplicationDataGenerator, AlertGenerator, Close, \ fuzz_message from tlsfuzzer.expect import ExpectServerHello, ExpectCertificate, \ ExpectServerHelloDone, ExpectChangeCipherSpec, ExpectFinished, \ ExpectAlert, ExpectApplicationData, ExpectClose, \ ExpectServerKeyExchange from tlslite.constants import CipherSuite, AlertLevel, AlertDescription, \ HashAlgorithm, SignatureAlgorithm, ExtensionType, SignatureScheme, \ GroupName from tlslite.extensions import SignatureAlgorithmsExtension, \ SignatureAlgorithmsCertExtension, SupportedGroupsExtension from tlsfuzzer.helpers import RSA_SIG_ALL, SIG_ALL, ECDSA_SIG_ALL from tlsfuzzer.utils.ordered_dict import OrderedDict from tlsfuzzer.utils.lists import natural_sort_keys version = 6 def help_msg(): print("Usage: [-h hostname] [OPTIONS] [[probe-name] ...]") print(" --alert name name of the expected alert for malformed messages") print(" decode_error by default (as per standard)") print(" -h hostname name of the host to run the test against") print(" localhost by default") print(" -p port port number to use for connection, 4433 by default") print(" probe-name if present, will run only the probes with given") print(" names and not all of them, e.g \"sanity\"") print(" -e probe-name exclude the probe from the list of the ones run") print(" may be specified multiple times") print(" -n num run 'num' or all(if 0) tests instead of default(all)") print(" (excluding \"sanity\" tests)") print(" -x probe-name expect the probe to fail. When such probe passes despite being marked like this") print(" it will be reported in the test summary and the whole script will fail.") print(" May be specified multiple times.") print(" -X message expect the `message` substring in exception raised during") print(" execution of preceding expected failure probe") print(" usage: [-x probe-name] [-X exception], order is compulsory!") print(" --no-sha1 expect conversations with explicit/implicit sha1") print(" to fail") print(" --ecdsa Use ecdsa sigalgs instead of rsa.") print(" --help this message") def main(): host = "localhost" port = 4433 num_limit = None fatal_alert = "decode_error" run_exclude = set() expected_failures = {} last_exp_tmp = None no_sha1 = False expected_signature = SignatureAlgorithm.rsa expected_sig_list = RSA_SIG_ALL argv = sys.argv[1:] opts, args = getopt.getopt(argv, "h:p:e:n:x:X:", ["help", "alert=", "no-sha1", "ecdsa"]) for opt, arg in opts: if opt == '-h': host = arg elif opt == '-p': port = int(arg) elif opt == '-e': run_exclude.add(arg) elif opt == '-n': num_limit = int(arg) elif opt == '-x': expected_failures[arg] = None last_exp_tmp = str(arg) elif opt == '-X': if not last_exp_tmp: raise ValueError("-x has to be specified before -X") expected_failures[last_exp_tmp] = str(arg) elif opt == '--alert': fatal_alert = arg elif opt == '--no-sha1': no_sha1 = True elif opt == '--ecdsa': expected_signature = SignatureAlgorithm.ecdsa expected_sig_list = ECDSA_SIG_ALL elif opt == '--help': help_msg() sys.exit(0) else: raise ValueError("Unknown option: {0}".format(opt)) if args: run_only = set(args) else: run_only = None conversations = {} conversation = Connect(host, port) node = conversation ext = {} groups = [GroupName.secp256r1] ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\ .create(groups) ext[ExtensionType.signature_algorithms] = \ SignatureAlgorithmsExtension().create(SIG_ALL) ext[ExtensionType.signature_algorithms_cert] = \ SignatureAlgorithmsCertExtension().create(SIG_ALL) ciphers = [CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV] node = node.add_child(ClientHelloGenerator(ciphers, extensions=ext)) node = node.add_child(ExpectServerHello()) node = node.add_child(ExpectCertificate()) node = node.add_child(ExpectServerKeyExchange()) node = node.add_child(ExpectServerHelloDone()) node = node.add_child(ClientKeyExchangeGenerator()) node = node.add_child(ChangeCipherSpecGenerator()) node = node.add_child(FinishedGenerator()) node = node.add_child(ExpectChangeCipherSpec()) node = node.add_child(ExpectFinished()) node = node.add_child(ApplicationDataGenerator( bytearray(b"GET / HTTP/1.0\r\n\r\n"))) node = node.add_child(ExpectApplicationData()) node = node.add_child(AlertGenerator(AlertLevel.warning, AlertDescription.close_notify)) node = node.add_child(ExpectAlert()) node.next_sibling = ExpectClose() conversations["sanity"] = conversation conversation = Connect(host, port) node = conversation groups = [GroupName.secp256r1] ext = {} ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\ .create(groups) ciphers = [CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV] node = node.add_child(ClientHelloGenerator(ciphers, version=(3, 3), extensions=ext)) if no_sha1: node = node.add_child(ExpectServerHello(version=(3, 3))) node.next_sibling = ExpectAlert(AlertLevel.fatal, AlertDescription.handshake_failure) node.next_sibling.add_child(ExpectClose()) alt = node.next_sibling node = node.add_child(ExpectCertificate()) node.add_child(alt) else: node = node.add_child(ExpectServerHello(version=(3, 3))) node = node.add_child(ExpectCertificate()) # implicit SHA-1 check from Client Hello ext node = node.add_child(ExpectServerKeyExchange()) node = node.add_child(ExpectServerHelloDone()) node = node.add_child(ClientKeyExchangeGenerator()) node = node.add_child(ChangeCipherSpecGenerator()) node = node.add_child(FinishedGenerator()) node = node.add_child(ExpectChangeCipherSpec()) node = node.add_child(ExpectFinished()) node = node.add_child(ApplicationDataGenerator( bytearray(b"GET / HTTP/1.0\n\n"))) node = node.add_child(ExpectApplicationData()) node = node.add_child(AlertGenerator(AlertLevel.warning, AlertDescription.close_notify)) node = node.add_child(ExpectAlert()) node.next_sibling = ExpectClose() conversations["implicit SHA-1 check"] = conversation conversation = Connect(host, port) node = conversation groups = [GroupName.secp256r1] ciphers = [CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV] sigs = [(HashAlgorithm.sha1, expected_signature)] ext = {ExtensionType.signature_algorithms : SignatureAlgorithmsExtension().create(sigs), ExtensionType.signature_algorithms_cert : SignatureAlgorithmsCertExtension().create(expected_sig_list)} ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\ .create(groups) node = node.add_child(ClientHelloGenerator(ciphers, version=(3, 3), extensions=ext)) if no_sha1: node = node.add_child(ExpectAlert(AlertLevel.fatal, AlertDescription.handshake_failure)) node = node.add_child(ExpectClose()) else: node = node.add_child(ExpectServerHello(version=(3, 3))) node = node.add_child(ExpectCertificate()) # implicit SHA-1 check from Client Hello ext node = node.add_child(ExpectServerKeyExchange()) node = node.add_child(ExpectServerHelloDone()) node = node.add_child(ClientKeyExchangeGenerator()) node = node.add_child(ChangeCipherSpecGenerator()) node = node.add_child(FinishedGenerator()) node = node.add_child(ExpectChangeCipherSpec()) node = node.add_child(ExpectFinished()) node = node.add_child(ApplicationDataGenerator( bytearray(b"GET / HTTP/1.0\n\n"))) node = node.add_child(ExpectApplicationData()) node = node.add_child(AlertGenerator(AlertLevel.warning, AlertDescription.close_notify)) node = node.add_child(ExpectAlert()) node.next_sibling = ExpectClose() conversations["explicit SHA-1+RSA/ECDSA"] = conversation conversation = Connect(host, port) node = conversation groups = [GroupName.secp256r1] ciphers = [CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV] sigs = [(HashAlgorithm.sha256, expected_signature)] ext = {ExtensionType.signature_algorithms : SignatureAlgorithmsExtension().create(sigs), ExtensionType.signature_algorithms_cert : SignatureAlgorithmsCertExtension().create(expected_sig_list)} ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\ .create(groups) node = node.add_child(ClientHelloGenerator(ciphers, version=(3, 3), extensions=ext)) node = node.add_child(ExpectServerHello(version=(3, 3))) node = node.add_child(ExpectCertificate()) # implicit SHA-256 check from Client Hello ext node = node.add_child(ExpectServerKeyExchange()) node = node.add_child(ExpectServerHelloDone()) node = node.add_child(ClientKeyExchangeGenerator()) node = node.add_child(ChangeCipherSpecGenerator()) node = node.add_child(FinishedGenerator()) node = node.add_child(ExpectChangeCipherSpec()) node = node.add_child(ExpectFinished()) node = node.add_child(ApplicationDataGenerator( bytearray(b"GET / HTTP/1.0\n\n"))) node = node.add_child(ExpectApplicationData()) node = node.add_child(AlertGenerator(AlertLevel.warning, AlertDescription.close_notify)) node = node.add_child(ExpectAlert()) node.next_sibling = ExpectClose() conversations["explicit SHA-256+RSA or ECDSA"] = conversation conversation = Connect(host, port) node = conversation groups = [GroupName.secp256r1] ciphers = [CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV] sigs = [(0, expected_signature), (HashAlgorithm.sha256, expected_signature)] ext = {ExtensionType.signature_algorithms : SignatureAlgorithmsExtension().create(sigs), ExtensionType.signature_algorithms_cert : SignatureAlgorithmsCertExtension().create(expected_sig_list)} ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\ .create(groups) node = node.add_child(ClientHelloGenerator(ciphers, version=(3, 3), extensions=ext)) node = node.add_child(ExpectServerHello(version=(3, 3))) node = node.add_child(ExpectCertificate()) valid = [(HashAlgorithm.sha256, expected_signature)] node = node.add_child(ExpectServerKeyExchange(valid_sig_algs=valid)) node = node.add_child(ExpectServerHelloDone()) node = node.add_child(ClientKeyExchangeGenerator()) node = node.add_child(ChangeCipherSpecGenerator()) node = node.add_child(FinishedGenerator()) node = node.add_child(ExpectChangeCipherSpec()) node = node.add_child(ExpectFinished()) node = node.add_child(ApplicationDataGenerator( bytearray(b"GET / HTTP/1.0\n\n"))) node = node.add_child(ExpectApplicationData()) node = node.add_child(AlertGenerator(AlertLevel.warning, AlertDescription.close_notify)) node = node.add_child(ExpectAlert()) node.next_sibling = ExpectClose() conversations["tolerance none+RSA or ECDSA"] = conversation conversation = Connect(host, port) node = conversation groups = [GroupName.secp256r1] ciphers = [CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV] sigs = [(10, expected_signature), (HashAlgorithm.sha256, expected_signature)] ext = {ExtensionType.signature_algorithms : SignatureAlgorithmsExtension().create(sigs), ExtensionType.signature_algorithms_cert : SignatureAlgorithmsCertExtension().create(expected_sig_list)} ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\ .create(groups) node = node.add_child(ClientHelloGenerator(ciphers, version=(3, 3), extensions=ext)) node = node.add_child(ExpectServerHello(version=(3, 3))) node = node.add_child(ExpectCertificate()) valid = [(HashAlgorithm.sha256, expected_signature)] node = node.add_child(ExpectServerKeyExchange(valid_sig_algs=valid)) node = node.add_child(ExpectServerHelloDone()) node = node.add_child(ClientKeyExchangeGenerator()) node = node.add_child(ChangeCipherSpecGenerator()) node = node.add_child(FinishedGenerator()) node = node.add_child(ExpectChangeCipherSpec()) node = node.add_child(ExpectFinished()) node = node.add_child(ApplicationDataGenerator( bytearray(b"GET / HTTP/1.0\n\n"))) node = node.add_child(ExpectApplicationData()) node = node.add_child(AlertGenerator(AlertLevel.warning, AlertDescription.close_notify)) node = node.add_child(ExpectAlert()) node.next_sibling = ExpectClose() conversations["tolerance 10+RSA or ECDSA method"] = conversation conversation = Connect(host, port) node = conversation groups = [GroupName.secp256r1] ciphers = [CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV] sigs = list(chain( ((i, expected_signature) for i in range(10, 224)), [(HashAlgorithm.sha256, expected_signature)])) ext = {ExtensionType.signature_algorithms : SignatureAlgorithmsExtension().create(sigs), ExtensionType.signature_algorithms_cert : SignatureAlgorithmsCertExtension().create(expected_sig_list)} ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\ .create(groups) node = node.add_child(ClientHelloGenerator(ciphers, version=(3, 3), extensions=ext)) node = node.add_child(ExpectServerHello(version=(3, 3))) node = node.add_child(ExpectCertificate()) valid = [(HashAlgorithm.sha256, expected_signature)] node = node.add_child(ExpectServerKeyExchange(valid_sig_algs=valid)) node = node.add_child(ExpectServerHelloDone()) node = node.add_child(ClientKeyExchangeGenerator()) node = node.add_child(ChangeCipherSpecGenerator()) node = node.add_child(FinishedGenerator()) node = node.add_child(ExpectChangeCipherSpec()) node = node.add_child(ExpectFinished()) node = node.add_child(ApplicationDataGenerator( bytearray(b"GET / HTTP/1.0\n\n"))) node = node.add_child(ExpectApplicationData()) node = node.add_child(AlertGenerator(AlertLevel.warning, AlertDescription.close_notify)) node = node.add_child(ExpectAlert()) node.next_sibling = ExpectClose() conversations["tolerance 215 RSA or ECDSA methods"] = conversation conversation = Connect(host, port) node = conversation groups = [GroupName.secp256r1] ciphers = [CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV] sigs = list(chain( ((i, j) for i in range(10, 224) for j in range(10, 21)), [(HashAlgorithm.sha256, expected_signature)])) ext = {ExtensionType.signature_algorithms : SignatureAlgorithmsExtension().create(sigs), ExtensionType.signature_algorithms_cert : SignatureAlgorithmsCertExtension().create(expected_sig_list)} ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\ .create(groups) node = node.add_child(ClientHelloGenerator(ciphers, version=(3, 3), extensions=ext)) node = node.add_child(ExpectServerHello(version=(3, 3))) node = node.add_child(ExpectCertificate()) valid = [(HashAlgorithm.sha256, expected_signature)] node = node.add_child(ExpectServerKeyExchange(valid_sig_algs=valid)) node = node.add_child(ExpectServerHelloDone()) node = node.add_child(ClientKeyExchangeGenerator()) node = node.add_child(ChangeCipherSpecGenerator()) node = node.add_child(FinishedGenerator()) node = node.add_child(ExpectChangeCipherSpec()) node = node.add_child(ExpectFinished()) node = node.add_child(ApplicationDataGenerator( bytearray(b"GET / HTTP/1.0\n\n"))) node = node.add_child(ExpectApplicationData()) # OpenSSL sends the list of advertised and it doesn't fit a single # application data node = node.add_child(Close()) conversations["tolerance 2355 RSA or ECDSA methods"] = conversation conversation = Connect(host, port) node = conversation groups = [GroupName.secp256r1] ciphers = [CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV] sigs = list(chain( ((i, j) for i in range(10, 224) for j in range(21, 59)), [(HashAlgorithm.sha256, expected_signature)])) ext = {ExtensionType.signature_algorithms : SignatureAlgorithmsExtension().create(sigs), ExtensionType.signature_algorithms_cert : SignatureAlgorithmsCertExtension().create(expected_sig_list)} ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\ .create(groups) node = node.add_child(ClientHelloGenerator(ciphers, version=(3, 3), extensions=ext)) node = node.add_child(ExpectServerHello(version=(3, 3))) node = node.add_child(ExpectCertificate()) valid = [(HashAlgorithm.sha256, expected_signature)] node = node.add_child(ExpectServerKeyExchange(valid_sig_algs=valid)) node = node.add_child(ExpectServerHelloDone()) node = node.add_child(ClientKeyExchangeGenerator()) node = node.add_child(ChangeCipherSpecGenerator()) node = node.add_child(FinishedGenerator()) node = node.add_child(ExpectChangeCipherSpec()) node = node.add_child(ExpectFinished()) node = node.add_child(ApplicationDataGenerator( bytearray(b"GET / HTTP/1.0\n\n"))) node = node.add_child(ExpectApplicationData()) node = node.add_child(Close()) # OpenSSL lists them, which makes the response huge conversations["tolerance 8132 RSA or ECDSA methods"] = conversation conversation = Connect(host, port) node = conversation groups = [GroupName.secp256r1] ciphers = [CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV] sig_alg = SignatureAlgorithmsExtension() sig_alg.create(list(chain( ((i, j) for i in range(10, 224) for j in range(10, 121)), [(HashAlgorithm.sha256, expected_signature)]))) ext = {ExtensionType.signature_algorithms: sig_alg} ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\ .create(groups) node = node.add_child(ClientHelloGenerator(ciphers, version=(3, 3), extensions=ext)) node = node.add_child(ExpectServerHello(version=(3, 3))) node = node.add_child(ExpectCertificate()) valid = [(HashAlgorithm.sha256, expected_signature)] node = node.add_child(ExpectServerKeyExchange(valid_sig_algs=valid)) node = node.add_child(ExpectServerHelloDone()) node = node.add_child(ClientKeyExchangeGenerator()) node = node.add_child(ChangeCipherSpecGenerator()) node = node.add_child(FinishedGenerator()) node = node.add_child(ExpectChangeCipherSpec()) node = node.add_child(ExpectFinished()) node = node.add_child(ApplicationDataGenerator( bytearray(b"GET / HTTP/1.0\n\n"))) node = node.add_child(ExpectApplicationData()) node = node.add_child(Close()) # OpenSSL lists them, which makes the response huge conversations["tolerance 23754 RSA or ECDSA methods"] = conversation conversation = Connect(host, port) node = conversation groups = [GroupName.secp256r1] ciphers = [CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV] sig_alg = SignatureAlgorithmsExtension() # generate maximum number of methods (4 bytes for extensions header, # 2 bytes for length of list inside extension, leaving 65528 bytes) sig_alg.create(list(chain( ((i, j) for i in range(10, 224) for j in range(10, 163)), ((i, 163) for i in range(10, 27)), [(HashAlgorithm.sha256, expected_signature)]))) ext = {ExtensionType.signature_algorithms: sig_alg} ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\ .create(groups) node = node.add_child(ClientHelloGenerator(ciphers, version=(3, 3), extensions=ext)) node = node.add_child(ExpectServerHello(version=(3, 3))) node = node.add_child(ExpectCertificate()) valid = [(HashAlgorithm.sha256, expected_signature)] node = node.add_child(ExpectServerKeyExchange(valid_sig_algs=valid)) node = node.add_child(ExpectServerHelloDone()) node = node.add_child(ClientKeyExchangeGenerator()) node = node.add_child(ChangeCipherSpecGenerator()) node = node.add_child(FinishedGenerator()) node = node.add_child(ExpectChangeCipherSpec()) node = node.add_child(ExpectFinished()) node = node.add_child(ApplicationDataGenerator( bytearray(b"GET / HTTP/1.0\n\n"))) node = node.add_child(ExpectApplicationData()) node = node.add_child(Close()) # OpenSSL lists them, which makes the response huge conversations["tolerance max (32760) number of methods"] = conversation conversation = Connect(host, port) node = conversation groups = [GroupName.secp256r1] ciphers = [CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV] # generate maximum number of methods for 2 extensions # (4 bytes for extensions header, 2 bytes for length of list inside # extension leaving 65522 bytes) sigs = list(chain( ((i, j) for i in range(10, 224) for j in range(10, 86)), ((i, 163) for i in range(10, 123)), [(HashAlgorithm.sha256, expected_signature)])) ext = {ExtensionType.signature_algorithms : SignatureAlgorithmsExtension().create(sigs), ExtensionType.signature_algorithms_cert : SignatureAlgorithmsCertExtension().create(sigs)} ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\ .create(groups) node = node.add_child(ClientHelloGenerator(ciphers, version=(3, 3), extensions=ext)) node = node.add_child(ExpectServerHello(version=(3, 3))) node = node.add_child(ExpectCertificate()) valid = [(HashAlgorithm.sha256, expected_signature)] node = node.add_child(ExpectServerKeyExchange(valid_sig_algs=valid)) node = node.add_child(ExpectServerHelloDone()) node = node.add_child(ClientKeyExchangeGenerator()) node = node.add_child(ChangeCipherSpecGenerator()) node = node.add_child(FinishedGenerator()) node = node.add_child(ExpectChangeCipherSpec()) node = node.add_child(ExpectFinished()) node = node.add_child(ApplicationDataGenerator( bytearray(b"GET / HTTP/1.0\n\n"))) node = node.add_child(ExpectApplicationData()) node = node.add_child(Close()) # OpenSSL lists them, which makes the response huge conversations["tolerance 32758 methods with sig_alg_cert"] = conversation conversation = Connect(host, port) node = conversation groups = [GroupName.secp256r1] ciphers = [CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV] # generate maximum number of methods for 2 extensions # (4 bytes for extensions header, 2 bytes for length of list inside # extension leaving 65522 bytes) n = 32757 n = n - 1 # this is the mandatory method in the end n = n - len(expected_sig_list) # number of methods in sig_alg_cert extension sigs = list(chain( ((i, j) for i in range(10, 224) for j in range(10, (n // 214) + 10)), ((i, 163) for i in range(10, (n % 214) + 10)), [(HashAlgorithm.sha256, expected_signature)])) ext = {ExtensionType.signature_algorithms : SignatureAlgorithmsExtension().create(sigs), ExtensionType.signature_algorithms_cert : SignatureAlgorithmsCertExtension().create(expected_sig_list)} ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\ .create(groups) node = node.add_child(ClientHelloGenerator(ciphers, version=(3, 3), extensions=ext)) node = node.add_child(ExpectServerHello(version=(3, 3))) node = node.add_child(ExpectCertificate()) valid = [(HashAlgorithm.sha256, expected_signature)] node = node.add_child(ExpectServerKeyExchange(valid_sig_algs=valid)) node = node.add_child(ExpectServerHelloDone()) node = node.add_child(ClientKeyExchangeGenerator()) node = node.add_child(ChangeCipherSpecGenerator()) node = node.add_child(FinishedGenerator()) node = node.add_child(ExpectChangeCipherSpec()) node = node.add_child(ExpectFinished()) node = node.add_child(ApplicationDataGenerator( bytearray(b"GET / HTTP/1.0\n\n"))) node = node.add_child(ExpectApplicationData()) node = node.add_child(Close()) # OpenSSL lists them, which makes the response huge conversations["tolerance max {0} number of methods with sig_alg_cert".format(n)] = conversation conversation = Connect(host, port) node = conversation groups = [GroupName.secp256r1] ciphers = [CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV] sigs = [] ext = {ExtensionType.signature_algorithms : SignatureAlgorithmsExtension().create(sigs), ExtensionType.signature_algorithms_cert : SignatureAlgorithmsCertExtension().create(SIG_ALL)} ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\ .create(groups) hello = ClientHelloGenerator(ciphers, version=(3, 3), extensions=ext) node = node.add_child(hello) node = node.add_child(ExpectAlert(AlertLevel.fatal, getattr(AlertDescription, fatal_alert))) node = node.add_child(ExpectClose()) conversations["empty list of signature methods"] = \ conversation # generate maximum number of methods for 2 extensions # (4 bytes for extensions header, 2 bytes for length of list inside # extension leaving 65522 bytes) for n in [215, 2355, 8132, 23754, 32757]: conversation = Connect(host, port) node = conversation groups = [GroupName.secp256r1] ciphers = [CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV] n = n - 1 # this is the mandatory method in the end n = n - len(expected_sig_list) # number of methods in sig_alg_cert extension sigs = [(HashAlgorithm.sha1, SignatureAlgorithm.dsa)] * n sigs += [(HashAlgorithm.sha256, expected_signature)] ext = {ExtensionType.signature_algorithms : SignatureAlgorithmsExtension().create(sigs), ExtensionType.signature_algorithms_cert : SignatureAlgorithmsCertExtension().create(expected_sig_list)} ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\ .create(groups) node = node.add_child(ClientHelloGenerator(ciphers, version=(3, 3), extensions=ext)) node = node.add_child(ExpectServerHello(version=(3, 3))) node = node.add_child(ExpectCertificate()) node = node.add_child(ExpectServerKeyExchange()) node = node.add_child(ExpectServerHelloDone()) node = node.add_child(ClientKeyExchangeGenerator()) node = node.add_child(ChangeCipherSpecGenerator()) node = node.add_child(FinishedGenerator()) node = node.add_child(ExpectChangeCipherSpec()) node = node.add_child(ExpectFinished()) node = node.add_child(ApplicationDataGenerator( bytearray(b"GET / HTTP/1.0\n\n"))) # ApplicationData message may show up 1 to many times node = node.add_child(ExpectApplicationData()) node = node.add_child(AlertGenerator(AlertLevel.warning, AlertDescription.close_notify)) cycle_alert = ExpectAlert() node = node.add_child(cycle_alert) node.next_sibling = ExpectApplicationData() node.next_sibling.add_child(cycle_alert) node.next_sibling.next_sibling = ExpectClose() conversations["duplicated {0} non-rsa schemes".format(n)] = conversation conversation = Connect(host, port) node = conversation groups = [GroupName.secp256r1] ciphers = [CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV] # Add all supported sig_algs, put rsa(or ecdsa if --ecdsa used) at the end first = 'ecdsa' last = 'rsa' if expected_signature == SignatureAlgorithm.ecdsa: first = 'rsa' last = 'ecdsa' sig_algs = [] for sig_alg in [first, 'dsa']: sig_algs += [(getattr(HashAlgorithm, x), getattr(SignatureAlgorithm, sig_alg))\ for x in ['md5', 'sha1', 'sha224', 'sha256', 'sha384', 'sha512']] sig_algs += [SignatureScheme.rsa_pss_rsae_sha256, SignatureScheme.rsa_pss_rsae_sha384, SignatureScheme.rsa_pss_rsae_sha512, SignatureScheme.rsa_pss_pss_sha256, SignatureScheme.rsa_pss_pss_sha384, SignatureScheme.rsa_pss_pss_sha512] # ed25519(0x0807), ed448(0x0808) sig_algs += [(8, 7), (8, 8)] sig_algs += [(getattr(HashAlgorithm, x), getattr(SignatureAlgorithm, last))\ for x in ['md5', 'sha1', 'sha224', 'sha256', 'sha384', 'sha512']] ext = {ExtensionType.signature_algorithms : SignatureAlgorithmsExtension().create(sig_algs), ExtensionType.signature_algorithms_cert : SignatureAlgorithmsCertExtension().create(expected_sig_list)} ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\ .create(groups) node = node.add_child(ClientHelloGenerator(ciphers, version=(3, 3), extensions=ext)) node = node.add_child(ExpectServerHello(version=(3, 3))) node = node.add_child(ExpectCertificate()) node = node.add_child(ExpectServerKeyExchange()) node = node.add_child(ExpectServerHelloDone()) node = node.add_child(ClientKeyExchangeGenerator()) node = node.add_child(ChangeCipherSpecGenerator()) node = node.add_child(FinishedGenerator()) node = node.add_child(ExpectChangeCipherSpec()) node = node.add_child(ExpectFinished()) node = node.add_child(ApplicationDataGenerator( bytearray(b"GET / HTTP/1.0\n\n"))) # ApplicationData message may show up 1 to many times node = node.add_child(ExpectApplicationData()) node = node.add_child(AlertGenerator(AlertLevel.warning, AlertDescription.close_notify)) cycle_alert = ExpectAlert() node = node.add_child(cycle_alert) node.next_sibling = ExpectApplicationData() node.next_sibling.add_child(cycle_alert) node.next_sibling.next_sibling = ExpectClose() conversations["unique and well-known sig_algs, {0} algorithm last".format(last)] = conversation for i in range(1, 0x100): conversation = Connect(host, port) node = conversation groups = [GroupName.secp256r1] ciphers = [CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA, CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV] sig_alg = SignatureAlgorithmsExtension() sig_alg.create([(HashAlgorithm.sha256, expected_signature), (HashAlgorithm.sha1, expected_signature)]) ext = OrderedDict() ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\ .create(groups) ext[ExtensionType.signature_algorithms] = sig_alg hello = ClientHelloGenerator(ciphers, version=(3, 3), extensions=ext) node = node.add_child(fuzz_message(hello, xors={-5:i})) node = node.add_child(ExpectAlert(AlertLevel.fatal, getattr(AlertDescription, fatal_alert))) node = node.add_child(ExpectClose()) conversations["fuzz length inside extension to {0}".format(4^i)] = \ conversation # run the conversation good = 0 bad = 0 xfail = 0 xpass = 0 failed = [] xpassed = [] if not num_limit: num_limit = len(conversations) # make sure that sanity test is run first and last # to verify that server was running and kept running throughout sanity_tests = [('sanity', conversations['sanity'])] if run_only: if num_limit > len(run_only): num_limit = len(run_only) regular_tests = [(k, v) for k, v in conversations.items() if k in run_only] else: regular_tests = [(k, v) for k, v in conversations.items() if (k != 'sanity') and k not in run_exclude] sampled_tests = sample(regular_tests, min(num_limit, len(regular_tests))) ordered_tests = chain(sanity_tests, sampled_tests, sanity_tests) for c_name, c_test in ordered_tests: if run_only and c_name not in run_only or c_name in run_exclude: continue print("{0} ...".format(c_name)) runner = Runner(c_test) res = True exception = None try: runner.run() except Exception as exp: exception = exp print("Error while processing") print(traceback.format_exc()) res = False if c_name in expected_failures: if res: xpass += 1 xpassed.append(c_name) print("XPASS-expected failure but test passed\n") else: if expected_failures[c_name] is not None and \ expected_failures[c_name] not in str(exception): bad += 1 failed.append(c_name) print("Expected error message: {0}\n" .format(expected_failures[c_name])) else: xfail += 1 print("OK-expected failure\n") else: if res: good+=1 print("OK") else: bad+=1 failed.append(c_name) print("Signature Algorithms in TLS 1.2") print("Check if valid signature algorithm extensions are accepted and") print("invalid properly rejected by the TLS 1.2 server.\n") print("") print("NOTE: For 'unique and well-known sig_algs..' conversation, the server") print("must be configured to support only rsa_pkcs1_sha512 in case of an RSA") print("certificate and ecdsa+sha512 in case of an ECDSA certificate.") print("Test end") print(20 * '=') print("version: {0}".format(version)) print(20 * '=') print("TOTAL: {0}".format(len(sampled_tests) + 2*len(sanity_tests))) print("SKIP: {0}".format(len(run_exclude.intersection(conversations.keys())))) print("PASS: {0}".format(good)) print("XFAIL: {0}".format(xfail)) print("FAIL: {0}".format(bad)) print("XPASS: {0}".format(xpass)) print(20 * '=') sort = sorted(xpassed ,key=natural_sort_keys) if len(sort): print("XPASSED:\n\t{0}".format('\n\t'.join(repr(i) for i in sort))) sort = sorted(failed, key=natural_sort_keys) if len(sort): print("FAILED:\n\t{0}".format('\n\t'.join(repr(i) for i in sort))) if bad or xpass: sys.exit(1) if __name__ == "__main__": main()