test/recipes/70-test_sslversions.t

   1 #! /usr/bin/env perl
   2 # Copyright 2015-2020 The OpenSSL Project Authors. All Rights Reserved.
   3 #
   4 # Licensed under the Apache License 2.0 (the "License").  You may not use
   5 # this file except in compliance with the License.  You can obtain a copy
   6 # in the file LICENSE in the source distribution or at
   7 # https://www.openssl.org/source/license.html
   8
   9 use strict;
  10 use OpenSSL::Test qw/:DEFAULT cmdstr srctop_file bldtop_dir/;
  11 use OpenSSL::Test::Utils;
  12 use TLSProxy::Proxy;
  13 use File::Temp qw(tempfile);
  14
  15 use constant {
  16     REVERSE_ORDER_VERSIONS => 1,
  17     UNRECOGNISED_VERSIONS => 2,
  18     NO_EXTENSION => 3,
  19     EMPTY_EXTENSION => 4,
  20     TLS1_1_AND_1_0_ONLY => 5,
  21     WITH_TLS1_4 => 6,
  22     BAD_LEGACY_VERSION => 7
  23 };
  24
  25 my $testtype;
  26
  27 my $test_name = "test_sslversions";
  28 setup($test_name);
  29
  30 plan skip_all => "TLSProxy isn't usable on $^O"
  31     if $^O =~ /^(VMS)$/;
  32
  33 plan skip_all => "$test_name needs the dynamic engine feature enabled"
  34     if disabled("engine") || disabled("dynamic-engine");
  35
  36 plan skip_all => "$test_name needs the sock feature enabled"
  37     if disabled("sock");
  38
  39 plan skip_all => "$test_name needs TLS1.3, TLS1.2 and TLS1.1 enabled"
  40     if disabled("tls1_3")
  41        || (disabled("ec") && disabled("dh"))
  42        || disabled("tls1_2")
  43        || disabled("tls1_1");
  44
  45 $ENV{OPENSSL_ia32cap} = '~0x200000200000000';
  46
  47 my $proxy = TLSProxy::Proxy->new(
  48     undef,
  49     cmdstr(app(["openssl"]), display => 1),
  50     srctop_file("apps", "server.pem"),
  51     (!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE})
  52 );
  53
  54 #We're just testing various negative and unusual scenarios here. ssltest with
  55 #02-protocol-version.cnf should check all the various combinations of normal
  56 #version neg
  57
  58 #Test 1: An empty supported_versions extension should not succeed
  59 $testtype = EMPTY_EXTENSION;
  60 $proxy->filter(\&modify_supported_versions_filter);
  61 $proxy->start() or plan skip_all => "Unable to start up Proxy for tests";
  62 plan tests => 8;
  63 ok(TLSProxy::Message->fail(), "Empty supported versions");
  64
  65 #Test 2: supported_versions extension with no recognised versions should not
  66 #succeed
  67 $proxy->clear();
  68 $testtype = UNRECOGNISED_VERSIONS;
  69 $proxy->start();
  70 ok(TLSProxy::Message->fail(), "No recognised versions");
  71
  72 #Test 3: No supported versions extensions should succeed and select TLSv1.2
  73 $proxy->clear();
  74 $testtype = NO_EXTENSION;
  75 $proxy->start();
  76 my $record = pop @{$proxy->record_list};
  77 ok(TLSProxy::Message->success()
  78    && $record->version() == TLSProxy::Record::VERS_TLS_1_2,
  79    "No supported versions extension");
  80
  81 #Test 4: No supported versions extensions should fail if only TLS1.3 available
  82 $proxy->clear();
  83 $proxy->serverflags("-tls1_3");
  84 $proxy->start();
  85 ok(TLSProxy::Message->fail(), "No supported versions extension (only TLS1.3)");
  86
  87 #Test 5: supported versions extension with best version last should succeed
  88 #and select TLSv1.3
  89 $proxy->clear();
  90 $testtype = REVERSE_ORDER_VERSIONS;
  91 $proxy->start();
  92 $record = pop @{$proxy->record_list};
  93 ok(TLSProxy::Message->success()
  94    && $record->version() == TLSProxy::Record::VERS_TLS_1_2
  95    && TLSProxy::Proxy->is_tls13(),
  96    "Reverse order versions");
  97
  98 #Test 6: no TLSv1.3 or TLSv1.2 version in supported versions extension, but
  99 #TLSv1.1 and TLSv1.0 are present. Should just use TLSv1.1 and succeed
 100 $proxy->clear();
 101 $proxy->clientflags("-cipher DEFAULT:\@SECLEVEL=0");
 102 $proxy->ciphers("AES128-SHA:\@SECLEVEL=0");
 103 $testtype = TLS1_1_AND_1_0_ONLY;
 104 $proxy->start();
 105 $record = pop @{$proxy->record_list};
 106 ok(TLSProxy::Message->success()
 107    && $record->version() == TLSProxy::Record::VERS_TLS_1_1,
 108    "TLS1.1 and TLS1.0 in supported versions extension only");
 109
 110 #Test 7: TLS1.4 and TLS1.3 in supported versions. Should succeed and use TLS1.3
 111 $proxy->clear();
 112 $testtype = WITH_TLS1_4;
 113 $proxy->start();
 114 $record = pop @{$proxy->record_list};
 115 ok(TLSProxy::Message->success()
 116    && $record->version() == TLSProxy::Record::VERS_TLS_1_2
 117    && TLSProxy::Proxy->is_tls13(),
 118    "TLS1.4 in supported versions extension");
 119
 120 #Test 8: Set the legacy version to SSLv3 with supported versions. Should fail
 121 $proxy->clear();
 122 $testtype = BAD_LEGACY_VERSION;
 123 $proxy->start();
 124 ok(TLSProxy::Message->fail(), "Legacy version is SSLv3 with supported versions");
 125
 126 sub modify_supported_versions_filter
 127 {
 128     my $proxy = shift;
 129
 130     if ($proxy->flight == 1) {
 131         # Change the ServerRandom so that the downgrade sentinel doesn't cause
 132         # the connection to fail
 133         my $message = ${$proxy->message_list}[1];
 134         return if (!defined $message);
 135
 136         $message->random("\0"x32);
 137         $message->repack();
 138         return;
 139     }
 140
 141     # We're only interested in the initial ClientHello
 142     if ($proxy->flight != 0) {
 143         return;
 144     }
 145
 146     foreach my $message (@{$proxy->message_list}) {
 147         if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
 148             my $ext;
 149             if ($testtype == REVERSE_ORDER_VERSIONS) {
 150                 $ext = pack "C5",
 151                     0x04, # Length
 152                     0x03, 0x03, #TLSv1.2
 153                     0x03, 0x04; #TLSv1.3
 154             } elsif ($testtype == UNRECOGNISED_VERSIONS) {
 155                 $ext = pack "C5",
 156                     0x04, # Length
 157                     0x04, 0x04, #Some unrecognised version
 158                     0x04, 0x03; #Another unrecognised version
 159             } elsif ($testtype == TLS1_1_AND_1_0_ONLY) {
 160                 $ext = pack "C5",
 161                     0x04, # Length
 162                     0x03, 0x02, #TLSv1.1
 163                     0x03, 0x01; #TLSv1.0
 164             } elsif ($testtype == WITH_TLS1_4) {
 165                     $ext = pack "C5",
 166                         0x04, # Length
 167                         0x03, 0x05, #TLSv1.4
 168                         0x03, 0x04; #TLSv1.3
 169             }
 170             if ($testtype == REVERSE_ORDER_VERSIONS
 171                     || $testtype == UNRECOGNISED_VERSIONS
 172                     || $testtype == TLS1_1_AND_1_0_ONLY
 173                     || $testtype == WITH_TLS1_4) {
 174                 $message->set_extension(
 175                     TLSProxy::Message::EXT_SUPPORTED_VERSIONS, $ext);
 176             } elsif ($testtype == EMPTY_EXTENSION) {
 177                 $message->set_extension(
 178                     TLSProxy::Message::EXT_SUPPORTED_VERSIONS, "");
 179             } elsif ($testtype == NO_EXTENSION) {
 180                 $message->delete_extension(
 181                     TLSProxy::Message::EXT_SUPPORTED_VERSIONS);
 182             } else {
 183                 # BAD_LEGACY_VERSION
 184                 $message->client_version(TLSProxy::Record::VERS_SSL_3_0);
 185             }
 186
 187             $message->repack();
 188         }
 189     }
 190 }