428 lines
19 KiB
Python
428 lines
19 KiB
Python
# Author: Robert Kolcun, (c) 2018
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# Released under Gnu GPL v2.0, see LICENSE file for details
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from __future__ import print_function
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import traceback
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import sys
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import getopt
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from itertools import chain
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from random import sample
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from tlsfuzzer.runner import Runner
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from tlsfuzzer.messages import Connect, ClientHelloGenerator, \
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ClientKeyExchangeGenerator, ChangeCipherSpecGenerator, \
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FinishedGenerator, ApplicationDataGenerator, AlertGenerator, \
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TCPBufferingEnable, TCPBufferingFlush, TCPBufferingDisable
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from tlsfuzzer.expect import ExpectServerHello, ExpectCertificate, \
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ExpectServerHelloDone, ExpectChangeCipherSpec, ExpectFinished, \
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ExpectAlert, ExpectApplicationData, ExpectClose, \
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ExpectEncryptedExtensions, ExpectCertificateVerify, \
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ExpectNewSessionTicket
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from tlslite.constants import CipherSuite, AlertLevel, AlertDescription, \
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TLS_1_3_DRAFT, GroupName, ExtensionType, SignatureScheme, \
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ECPointFormat
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from tlslite.keyexchange import ECDHKeyExchange
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from tlsfuzzer.utils.lists import natural_sort_keys
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from tlslite.extensions import KeyShareEntry, ClientKeyShareExtension, \
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SupportedVersionsExtension, SupportedGroupsExtension, \
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SignatureAlgorithmsExtension, SignatureAlgorithmsCertExtension, \
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ECPointFormatsExtension
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from tlsfuzzer.helpers import key_share_gen, RSA_SIG_ALL
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from tlslite.utils.x25519 import X25519_ORDER_SIZE, X448_ORDER_SIZE
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from tlslite.utils.cryptomath import numberToByteArray
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version = 4
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def help_msg():
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print("Usage: <script-name> [-h hostname] [-p port] [[probe-name] ...]")
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print(" -h hostname name of the host to run the test against")
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print(" localhost by default")
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print(" -p port port number to use for connection, 4433 by default")
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print(" probe-name if present, will run only the probes with given")
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print(" names and not all of them, e.g \"sanity\"")
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print(" -e probe-name exclude the probe from the list of the ones run")
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print(" may be specified multiple times")
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print(" -x probe-name expect the probe to fail. When such probe passes despite being marked like this")
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print(" it will be reported in the test summary and the whole script will fail.")
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print(" May be specified multiple times.")
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print(" -X message expect the `message` substring in exception raised during")
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print(" execution of preceding expected failure probe")
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print(" usage: [-x probe-name] [-X exception], order is compulsory!")
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print(" -n num run 'num' or all(if 0) tests instead of default(all)")
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print(" (excluding \"sanity\" tests)")
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print(" --help this message")
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def main():
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host = "localhost"
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port = 4433
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num_limit = None
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run_exclude = set()
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expected_failures = {}
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last_exp_tmp = None
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argv = sys.argv[1:]
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opts, args = getopt.getopt(argv, "h:p:e:x:X:n:", ["help"])
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for opt, arg in opts:
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if opt == '-h':
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host = arg
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elif opt == '-p':
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port = int(arg)
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elif opt == '-e':
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run_exclude.add(arg)
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elif opt == '-x':
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expected_failures[arg] = None
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last_exp_tmp = str(arg)
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elif opt == '-X':
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if not last_exp_tmp:
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raise ValueError("-x has to be specified before -X")
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expected_failures[last_exp_tmp] = str(arg)
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elif opt == '-n':
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num_limit = int(arg)
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elif opt == '--help':
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help_msg()
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sys.exit(0)
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else:
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raise ValueError("Unknown option: {0}".format(opt))
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if args:
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run_only = set(args)
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else:
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run_only = None
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conversations = {}
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conversation = Connect(host, port)
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node = conversation
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ciphers = [CipherSuite.TLS_AES_128_GCM_SHA256,
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CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV]
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ext = {}
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groups = [GroupName.secp256r1]
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key_shares = []
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for group in groups:
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key_shares.append(key_share_gen(group))
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ext[ExtensionType.key_share] = ClientKeyShareExtension().create(key_shares)
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ext[ExtensionType.supported_versions] = SupportedVersionsExtension()\
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.create([TLS_1_3_DRAFT, (3, 3)])
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ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\
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.create(groups)
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sig_algs = [SignatureScheme.rsa_pss_rsae_sha256,
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SignatureScheme.rsa_pss_pss_sha256]
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ext[ExtensionType.signature_algorithms] = SignatureAlgorithmsExtension()\
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.create(sig_algs)
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ext[ExtensionType.signature_algorithms_cert] = SignatureAlgorithmsCertExtension()\
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.create(RSA_SIG_ALL)
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node = node.add_child(ClientHelloGenerator(ciphers, extensions=ext))
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node = node.add_child(ExpectServerHello())
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node = node.add_child(ExpectChangeCipherSpec())
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node = node.add_child(ExpectEncryptedExtensions())
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node = node.add_child(ExpectCertificate())
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node = node.add_child(ExpectCertificateVerify())
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node = node.add_child(ExpectFinished())
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node = node.add_child(FinishedGenerator())
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node = node.add_child(ApplicationDataGenerator(
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bytearray(b"GET / HTTP/1.0\r\n\r\n")))
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# This message is optional and may show up 0 to many times
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cycle = ExpectNewSessionTicket()
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node = node.add_child(cycle)
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node.add_child(cycle)
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node.next_sibling = ExpectApplicationData()
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node = node.next_sibling.add_child(AlertGenerator(AlertLevel.warning,
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AlertDescription.close_notify))
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node = node.add_child(ExpectAlert())
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node.next_sibling = ExpectClose()
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conversations["sanity"] = conversation
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test_groups = {
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GroupName.x25519: X25519_ORDER_SIZE,
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GroupName.x448: X448_ORDER_SIZE,
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}
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# check if server will negotiate x25519/x448 - sanity check
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for test_group, group_size in test_groups.items():
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for compression_format in [ECPointFormat.ansiX962_compressed_prime,
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ECPointFormat.ansiX962_compressed_char2,
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ECPointFormat.uncompressed]:
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conversation = Connect(host, port)
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node = conversation
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ciphers = [CipherSuite.TLS_AES_128_GCM_SHA256,
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CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV]
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ext = {}
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ext[ExtensionType.ec_point_formats] = ECPointFormatsExtension().create([compression_format])
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groups = [test_group]
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key_shares = []
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for group in groups:
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key_shares.append(key_share_gen(group))
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ext[ExtensionType.key_share] = ClientKeyShareExtension().create(key_shares)
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ext[ExtensionType.supported_versions] = SupportedVersionsExtension()\
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.create([TLS_1_3_DRAFT, (3, 3)])
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ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\
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.create(groups)
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sig_algs = [SignatureScheme.rsa_pss_rsae_sha256,
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SignatureScheme.rsa_pss_pss_sha256]
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ext[ExtensionType.signature_algorithms] = SignatureAlgorithmsExtension()\
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.create(sig_algs)
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ext[ExtensionType.signature_algorithms_cert] = SignatureAlgorithmsCertExtension()\
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.create(RSA_SIG_ALL)
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node = node.add_child(ClientHelloGenerator(ciphers, extensions=ext))
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node = node.add_child(ExpectServerHello())
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node = node.add_child(ExpectChangeCipherSpec())
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node = node.add_child(ExpectEncryptedExtensions())
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node = node.add_child(ExpectCertificate())
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node = node.add_child(ExpectCertificateVerify())
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node = node.add_child(ExpectFinished())
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node = node.add_child(FinishedGenerator())
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node = node.add_child(ApplicationDataGenerator(
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bytearray(b"GET / HTTP/1.0\r\n\r\n")))
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# This message is optional and may show up 0 to many times
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cycle = ExpectNewSessionTicket()
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node = node.add_child(cycle)
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node.add_child(cycle)
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node.next_sibling = ExpectApplicationData()
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node = node.next_sibling.add_child(AlertGenerator(AlertLevel.warning,
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AlertDescription.close_notify))
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node = node.add_child(ExpectAlert())
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node.next_sibling = ExpectClose()
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conversations["sanity {0} with compression {1}".format(
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GroupName.toRepr(test_group), ECPointFormat.toRepr(compression_format))] = conversation
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# check if server will reject an all-zero key share for x25519/x448
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# (it should result in all-zero shared secret)
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conversation = Connect(host, port)
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node = conversation
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ciphers = [CipherSuite.TLS_AES_128_GCM_SHA256,
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CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV]
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ext = {}
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groups = [test_group]
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key_shares = [KeyShareEntry().create(test_group, bytearray(group_size))]
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ext[ExtensionType.key_share] = ClientKeyShareExtension().create(key_shares)
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ext[ExtensionType.supported_versions] = SupportedVersionsExtension()\
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.create([TLS_1_3_DRAFT, (3, 3)])
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ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\
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.create(groups)
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sig_algs = [SignatureScheme.rsa_pss_rsae_sha256,
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SignatureScheme.rsa_pss_pss_sha256]
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ext[ExtensionType.signature_algorithms] = SignatureAlgorithmsExtension()\
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.create(sig_algs)
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ext[ExtensionType.signature_algorithms_cert] = SignatureAlgorithmsCertExtension()\
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.create(RSA_SIG_ALL)
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node = node.add_child(ClientHelloGenerator(ciphers, extensions=ext))
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node = node.add_child(ExpectAlert(AlertLevel.fatal,
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AlertDescription.illegal_parameter))
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node.add_child(ExpectClose())
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conversations["all zero {0} key share".format(GroupName.toRepr(test_group))] = conversation
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# check if server will reject a key share or 1 for x25519/x448
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# (it should result in all-zero shared secret)
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conversation = Connect(host, port)
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node = conversation
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ciphers = [CipherSuite.TLS_AES_128_GCM_SHA256,
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CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV]
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ext = {}
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groups = [test_group]
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key_shares = [KeyShareEntry().create(test_group,
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numberToByteArray(1, group_size, "little"))]
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ext[ExtensionType.key_share] = ClientKeyShareExtension().create(key_shares)
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ext[ExtensionType.supported_versions] = SupportedVersionsExtension()\
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.create([TLS_1_3_DRAFT, (3, 3)])
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ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\
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.create(groups)
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sig_algs = [SignatureScheme.rsa_pss_rsae_sha256,
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SignatureScheme.rsa_pss_pss_sha256]
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ext[ExtensionType.signature_algorithms] = SignatureAlgorithmsExtension()\
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.create(sig_algs)
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ext[ExtensionType.signature_algorithms_cert] = SignatureAlgorithmsCertExtension()\
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.create(RSA_SIG_ALL)
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node = node.add_child(ClientHelloGenerator(ciphers, extensions=ext))
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node = node.add_child(ExpectAlert(AlertLevel.fatal,
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AlertDescription.illegal_parameter))
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node.add_child(ExpectClose())
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conversations["{0} key share of \"1\"".format(GroupName.toRepr(test_group))] = conversation
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# check if server will reject too small x25519/x448 share
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# (one with too few bytes in the key share)
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conversation = Connect(host, port)
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node = conversation
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ciphers = [CipherSuite.TLS_AES_128_GCM_SHA256,
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CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV]
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ext = {}
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groups = [test_group]
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key_shares = [KeyShareEntry().create(test_group, bytearray([55] * (group_size - 1)))]
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ext[ExtensionType.key_share] = ClientKeyShareExtension().create(key_shares)
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ext[ExtensionType.supported_versions] = SupportedVersionsExtension()\
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.create([TLS_1_3_DRAFT, (3, 3)])
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ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\
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.create(groups)
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sig_algs = [SignatureScheme.rsa_pss_rsae_sha256,
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SignatureScheme.rsa_pss_pss_sha256]
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ext[ExtensionType.signature_algorithms] = SignatureAlgorithmsExtension()\
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.create(sig_algs)
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ext[ExtensionType.signature_algorithms_cert] = SignatureAlgorithmsCertExtension()\
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.create(RSA_SIG_ALL)
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node = node.add_child(ClientHelloGenerator(ciphers, extensions=ext))
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node = node.add_child(ExpectAlert(AlertLevel.fatal,
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AlertDescription.illegal_parameter))
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node.add_child(ExpectClose())
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conversations["too small {0} key share".format(GroupName.toRepr(test_group))] = conversation
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# check if server will reject empty x25519/x448 share
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# no compression
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conversation = Connect(host, port)
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node = conversation
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ciphers = [CipherSuite.TLS_AES_128_GCM_SHA256,
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CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV]
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ext = {}
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groups = [test_group]
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key_shares = [KeyShareEntry().create(test_group, bytearray())]
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ext[ExtensionType.key_share] = ClientKeyShareExtension().create(key_shares)
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ext[ExtensionType.supported_versions] = SupportedVersionsExtension()\
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.create([TLS_1_3_DRAFT, (3, 3)])
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ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\
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.create(groups)
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sig_algs = [SignatureScheme.rsa_pss_rsae_sha256,
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SignatureScheme.rsa_pss_pss_sha256]
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ext[ExtensionType.signature_algorithms] = SignatureAlgorithmsExtension()\
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.create(sig_algs)
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ext[ExtensionType.signature_algorithms_cert] = SignatureAlgorithmsCertExtension()\
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.create(RSA_SIG_ALL)
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node = node.add_child(ClientHelloGenerator(ciphers, extensions=ext))
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node = node.add_child(ExpectAlert(AlertLevel.fatal,
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AlertDescription.illegal_parameter))
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node.add_child(ExpectClose())
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conversations["empty {0} key share".format(GroupName.toRepr(test_group))] = conversation
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# check if server will reject too big x25519/x448 share
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# (one with too many bytes in the key share)
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conversation = Connect(host, port)
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node = conversation
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ciphers = [CipherSuite.TLS_AES_128_GCM_SHA256,
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CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV]
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ext = {}
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groups = [test_group]
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key_shares = [KeyShareEntry().create(test_group, bytearray([55] * (group_size + 1)))]
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ext[ExtensionType.key_share] = ClientKeyShareExtension().create(key_shares)
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ext[ExtensionType.supported_versions] = SupportedVersionsExtension()\
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.create([TLS_1_3_DRAFT, (3, 3)])
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ext[ExtensionType.supported_groups] = SupportedGroupsExtension()\
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.create(groups)
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sig_algs = [SignatureScheme.rsa_pss_rsae_sha256,
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SignatureScheme.rsa_pss_pss_sha256]
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ext[ExtensionType.signature_algorithms] = SignatureAlgorithmsExtension()\
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.create(sig_algs)
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ext[ExtensionType.signature_algorithms_cert] = SignatureAlgorithmsCertExtension()\
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.create(RSA_SIG_ALL)
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node = node.add_child(ClientHelloGenerator(ciphers, extensions=ext))
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node = node.add_child(ExpectAlert(AlertLevel.fatal,
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AlertDescription.illegal_parameter))
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node.add_child(ExpectClose())
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conversations["too big {0} key share".format(GroupName.toRepr(test_group))] = conversation
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# run the conversation
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good = 0
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bad = 0
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xfail = 0
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xpass = 0
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failed = []
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xpassed = []
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if not num_limit:
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num_limit = len(conversations)
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# make sure that sanity test is run first and last
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# to verify that server was running and kept running throughout
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sanity_tests = [('sanity', conversations['sanity'])]
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if run_only:
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if num_limit > len(run_only):
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num_limit = len(run_only)
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regular_tests = [(k, v) for k, v in conversations.items() if
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k in run_only]
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else:
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regular_tests = [(k, v) for k, v in conversations.items() if
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(k != 'sanity') and k not in run_exclude]
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sampled_tests = sample(regular_tests, min(num_limit, len(regular_tests)))
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ordered_tests = chain(sanity_tests, sampled_tests, sanity_tests)
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for c_name, c_test in ordered_tests:
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if run_only and c_name not in run_only or c_name in run_exclude:
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continue
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print("{0} ...".format(c_name))
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runner = Runner(c_test)
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res = True
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exception = None
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try:
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runner.run()
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except Exception as exp:
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exception = exp
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print("Error while processing")
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print(traceback.format_exc())
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res = False
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if c_name in expected_failures:
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if res:
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xpass += 1
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xpassed.append(c_name)
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print("XPASS-expected failure but test passed\n")
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else:
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if expected_failures[c_name] is not None and \
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expected_failures[c_name] not in str(exception):
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bad += 1
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failed.append(c_name)
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print("Expected error message: {0}\n"
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.format(expected_failures[c_name]))
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else:
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xfail += 1
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print("OK-expected failure\n")
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else:
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if res:
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good += 1
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print("OK\n")
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else:
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bad += 1
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failed.append(c_name)
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print("Basic test to verify that server selects same ECDHE parameters")
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print("and ciphersuites when x25519 or x448 curve is an option\n")
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print("Test end")
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print(20 * '=')
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print("version: {0}".format(version))
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print(20 * '=')
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print("TOTAL: {0}".format(len(sampled_tests) + 2*len(sanity_tests)))
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print("SKIP: {0}".format(len(run_exclude.intersection(conversations.keys()))))
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print("PASS: {0}".format(good))
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print("XFAIL: {0}".format(xfail))
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print("FAIL: {0}".format(bad))
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print("XPASS: {0}".format(xpass))
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print(20 * '=')
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sort = sorted(xpassed ,key=natural_sort_keys)
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if len(sort):
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print("XPASSED:\n\t{0}".format('\n\t'.join(repr(i) for i in sort)))
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sort = sorted(failed, key=natural_sort_keys)
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if len(sort):
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print("FAILED:\n\t{0}".format('\n\t'.join(repr(i) for i in sort)))
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if bad or xpass:
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sys.exit(1)
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if __name__ == "__main__":
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main()
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