test/recipes/70-test_sslsigalgs.t

   1 #! /usr/bin/env perl
   2 # Copyright 2016-2018 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
  14 my $test_name = "test_sslsigalgs";
  15 setup($test_name);
  16
  17 plan skip_all => "TLSProxy isn't usable on $^O"
  18     if $^O =~ /^(VMS)$/;
  19
  20 plan skip_all => "$test_name needs the dynamic engine feature enabled"
  21     if disabled("engine") || disabled("dynamic-engine");
  22
  23 plan skip_all => "$test_name needs the sock feature enabled"
  24     if disabled("sock");
  25
  26 plan skip_all => "$test_name needs TLS1.2 or TLS1.3 enabled"
  27     if disabled("tls1_2") && disabled("tls1_3");
  28
  29 $ENV{OPENSSL_ia32cap} = '~0x200000200000000';
  30 my $proxy = TLSProxy::Proxy->new(
  31     undef,
  32     cmdstr(app(["openssl"]), display => 1),
  33     srctop_file("apps", "server.pem"),
  34     (!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE})
  35 );
  36
  37 use constant {
  38     NO_SIG_ALGS_EXT => 0,
  39     EMPTY_SIG_ALGS_EXT => 1,
  40     NO_KNOWN_SIG_ALGS => 2,
  41     NO_PSS_SIG_ALGS => 3,
  42     PSS_ONLY_SIG_ALGS => 4,
  43     PURE_SIGALGS => 5,
  44     COMPAT_SIGALGS => 6,
  45     SIGALGS_CERT_ALL => 7,
  46     SIGALGS_CERT_PKCS => 8,
  47     SIGALGS_CERT_INVALID => 9
  48 };
  49
  50 #Note: Throughout this test we override the default ciphersuites where TLSv1.2
  51 #      is expected to ensure that a ServerKeyExchange message is sent that uses
  52 #      the sigalgs
  53
  54 #Test 1: Default sig algs should succeed
  55 $proxy->start() or plan skip_all => "Unable to start up Proxy for tests";
  56 plan tests => 24;
  57 ok(TLSProxy::Message->success, "Default sigalgs");
  58 my $testtype;
  59
  60 SKIP: {
  61     skip "TLSv1.3 disabled", 6 if disabled("tls1_3");
  62
  63     $proxy->filter(\&sigalgs_filter);
  64
  65     #Test 2: Sending no sig algs extension in TLSv1.3 should fail
  66     $proxy->clear();
  67     $testtype = NO_SIG_ALGS_EXT;
  68     $proxy->start();
  69     ok(TLSProxy::Message->fail, "No TLSv1.3 sigalgs");
  70
  71     #Test 3: Sending an empty sig algs extension in TLSv1.3 should fail
  72     $proxy->clear();
  73     $testtype = EMPTY_SIG_ALGS_EXT;
  74     $proxy->start();
  75     ok(TLSProxy::Message->fail, "Empty TLSv1.3 sigalgs");
  76
  77     #Test 4: Sending a list with no recognised sig algs in TLSv1.3 should fail
  78     $proxy->clear();
  79     $testtype = NO_KNOWN_SIG_ALGS;
  80     $proxy->start();
  81     ok(TLSProxy::Message->fail, "No known TLSv1.3 sigalgs");
  82
  83     #Test 5: Sending a sig algs list without pss for an RSA cert in TLSv1.3
  84     #        should fail
  85     $proxy->clear();
  86     $testtype = NO_PSS_SIG_ALGS;
  87     $proxy->start();
  88     ok(TLSProxy::Message->fail, "No PSS TLSv1.3 sigalgs");
  89
  90     #Test 6: Sending only TLSv1.3 PSS sig algs in TLSv1.3 should succeed
  91     #TODO(TLS1.3): Do we need to verify the cert to make sure its a PSS only
  92     #cert in this case?
  93     $proxy->clear();
  94     $testtype = PSS_ONLY_SIG_ALGS;
  95     $proxy->start();
  96     ok(TLSProxy::Message->success, "PSS only sigalgs in TLSv1.3");
  97
  98     #Test 7: Modify the CertificateVerify sigalg from rsa_pss_rsae_sha256 to
  99     #        rsa_pss_pss_sha256. This should fail because the public key OID
 100     #        in the certificate is rsaEncryption and not rsassaPss
 101     $proxy->filter(\&modify_cert_verify_sigalg);
 102     $proxy->clear();
 103     $proxy->start();
 104     ok(TLSProxy::Message->fail,
 105        "Mismatch between CertVerify sigalg and public key OID");
 106 }
 107
 108 SKIP: {
 109     skip "EC or TLSv1.3 disabled", 1
 110         if disabled("tls1_3") || disabled("ec");
 111     #Test 8: Sending a valid sig algs list but not including a sig type that
 112     #        matches the certificate should fail in TLSv1.3.
 113     $proxy->clear();
 114     $proxy->clientflags("-sigalgs ECDSA+SHA256");
 115     $proxy->filter(undef);
 116     $proxy->start();
 117     ok(TLSProxy::Message->fail, "No matching TLSv1.3 sigalgs");
 118 }
 119
 120 SKIP: {
 121     skip "EC, TLSv1.3 or TLSv1.2 disabled", 1
 122         if disabled("tls1_2") || disabled("tls1_3") || disabled("ec");
 123
 124     #Test 9: Sending a full list of TLSv1.3 sig algs but negotiating TLSv1.2
 125     #        should succeed
 126     $proxy->clear();
 127     $proxy->serverflags("-no_tls1_3");
 128     $proxy->ciphers("ECDHE-RSA-AES128-SHA");
 129     $proxy->filter(undef);
 130     $proxy->start();
 131     ok(TLSProxy::Message->success, "TLSv1.3 client TLSv1.2 server");
 132 }
 133
 134 SKIP: {
 135     skip "EC or TLSv1.2 disabled", 10 if disabled("tls1_2") || disabled("ec");
 136
 137     $proxy->filter(\&sigalgs_filter);
 138
 139     #Test 10: Sending no sig algs extension in TLSv1.2 should succeed at
 140     #         security level 1
 141     $proxy->clear();
 142     $testtype = NO_SIG_ALGS_EXT;
 143     $proxy->clientflags("-no_tls1_3 -cipher DEFAULT\@SECLEVEL=1");
 144     $proxy->ciphers("ECDHE-RSA-AES128-SHA\@SECLEVEL=1");
 145     $proxy->start();
 146     ok(TLSProxy::Message->success, "No TLSv1.2 sigalgs seclevel 1");
 147
 148     #Test 11: Sending no sig algs extension in TLSv1.2 should fail at security
 149     #         level 2 since it will try to use SHA1. Testing client at level 1,
 150     #         server level 2.
 151     $proxy->clear();
 152     $testtype = NO_SIG_ALGS_EXT;
 153     $proxy->clientflags("-tls1_2 -cipher DEFAULT\@SECLEVEL=1");
 154     $proxy->ciphers("DEFAULT\@SECLEVEL=2");
 155     $proxy->start();
 156     ok(TLSProxy::Message->fail, "No TLSv1.2 sigalgs server seclevel 2");
 157
 158     #Test 12: Sending no sig algs extension in TLSv1.2 should fail at security
 159     #         level 2 since it will try to use SHA1. Testing client at level 2,
 160     #         server level 1.
 161     $proxy->clear();
 162     $testtype = NO_SIG_ALGS_EXT;
 163     $proxy->clientflags("-tls1_2 -cipher DEFAULT\@SECLEVEL=2");
 164     $proxy->ciphers("DEFAULT\@SECLEVEL=1");
 165     $proxy->start();
 166     ok(TLSProxy::Message->fail, "No TLSv1.2 sigalgs client seclevel 2");
 167
 168     #Test 13: Sending an empty sig algs extension in TLSv1.2 should fail
 169     $proxy->clear();
 170     $testtype = EMPTY_SIG_ALGS_EXT;
 171     $proxy->clientflags("-no_tls1_3");
 172     $proxy->ciphers("ECDHE-RSA-AES128-SHA");
 173     $proxy->start();
 174     ok(TLSProxy::Message->fail, "Empty TLSv1.2 sigalgs");
 175
 176     #Test 14: Sending a list with no recognised sig algs in TLSv1.2 should fail
 177     $proxy->clear();
 178     $testtype = NO_KNOWN_SIG_ALGS;
 179     $proxy->clientflags("-no_tls1_3");
 180     $proxy->ciphers("ECDHE-RSA-AES128-SHA");
 181     $proxy->start();
 182     ok(TLSProxy::Message->fail, "No known TLSv1.3 sigalgs");
 183
 184     #Test 15: Sending a sig algs list without pss for an RSA cert in TLSv1.2
 185     #         should succeed
 186     $proxy->clear();
 187     $testtype = NO_PSS_SIG_ALGS;
 188     $proxy->clientflags("-no_tls1_3");
 189     $proxy->ciphers("ECDHE-RSA-AES128-SHA");
 190     $proxy->start();
 191     ok(TLSProxy::Message->success, "No PSS TLSv1.2 sigalgs");
 192
 193     #Test 16: Sending only TLSv1.3 PSS sig algs in TLSv1.2 should succeed
 194     $proxy->clear();
 195     $testtype = PSS_ONLY_SIG_ALGS;
 196     $proxy->serverflags("-no_tls1_3");
 197     $proxy->ciphers("ECDHE-RSA-AES128-SHA");
 198     $proxy->start();
 199     ok(TLSProxy::Message->success, "PSS only sigalgs in TLSv1.2");
 200
 201     #Test 17: Responding with a sig alg we did not send in TLSv1.2 should fail
 202     #         We send rsa_pkcs1_sha256 and respond with rsa_pss_rsae_sha256
 203     #         TODO(TLS1.3): Add a similar test to the TLSv1.3 section above
 204     #         when we have an API capable of configuring the TLSv1.3 sig algs
 205     $proxy->clear();
 206     $testtype = PSS_ONLY_SIG_ALGS;
 207     $proxy->clientflags("-no_tls1_3 -sigalgs RSA+SHA256");
 208     $proxy->ciphers("ECDHE-RSA-AES128-SHA");
 209     $proxy->start();
 210     ok(TLSProxy::Message->fail, "Sigalg we did not send in TLSv1.2");
 211
 212     #Test 18: Sending a valid sig algs list but not including a sig type that
 213     #         matches the certificate should fail in TLSv1.2
 214     $proxy->clear();
 215     $proxy->clientflags("-no_tls1_3 -sigalgs ECDSA+SHA256");
 216     $proxy->ciphers("ECDHE-RSA-AES128-SHA");
 217     $proxy->filter(undef);
 218     $proxy->start();
 219     ok(TLSProxy::Message->fail, "No matching TLSv1.2 sigalgs");
 220     $proxy->filter(\&sigalgs_filter);
 221
 222     #Test 19: No sig algs extension, ECDSA cert, TLSv1.2 should succeed
 223     $proxy->clear();
 224     $testtype = NO_SIG_ALGS_EXT;
 225     $proxy->clientflags("-no_tls1_3");
 226     $proxy->serverflags("-cert " . srctop_file("test", "certs",
 227                                                "server-ecdsa-cert.pem") .
 228                         " -key " . srctop_file("test", "certs",
 229                                                "server-ecdsa-key.pem")),
 230     $proxy->ciphers("ECDHE-ECDSA-AES128-SHA");
 231     $proxy->start();
 232     ok(TLSProxy::Message->success, "No TLSv1.2 sigalgs, ECDSA");
 233 }
 234
 235 my ($dsa_status, $sha1_status, $sha224_status);
 236 SKIP: {
 237     skip "TLSv1.3 disabled", 2 if disabled("tls1_3") || disabled("dsa");
 238     #Test 20: signature_algorithms with 1.3-only ClientHello
 239     $testtype = PURE_SIGALGS;
 240     $dsa_status = $sha1_status = $sha224_status = 0;
 241     $proxy->clear();
 242     $proxy->clientflags("-tls1_3");
 243     $proxy->filter(\&modify_sigalgs_filter);
 244     $proxy->start();
 245     ok($dsa_status && $sha1_status && $sha224_status,
 246        "DSA/SHA2 sigalg sent for 1.3-only ClientHello");
 247
 248     #Test 21: signature_algorithms with backwards compatible ClientHello
 249     SKIP: {
 250         skip "TLSv1.2 disabled", 1 if disabled("tls1_2");
 251         $testtype = COMPAT_SIGALGS;
 252         $dsa_status = $sha1_status = $sha224_status = 0;
 253         $proxy->clear();
 254         $proxy->filter(\&modify_sigalgs_filter);
 255         $proxy->start();
 256         ok($dsa_status && $sha1_status && $sha224_status,
 257            "DSA sigalg not sent for compat ClientHello");
 258    }
 259 }
 260
 261 SKIP: {
 262     skip "TLSv1.3 disabled", 3 if disabled("tls1_3");
 263     #Test 22: Insert signature_algorithms_cert that match normal sigalgs
 264     $testtype = SIGALGS_CERT_ALL;
 265     $proxy->clear();
 266     $proxy->filter(\&modify_sigalgs_cert_filter);
 267     $proxy->start();
 268     ok(TLSProxy::Message->success, "sigalgs_cert in TLSv1.3");
 269
 270     #Test 23: Insert signature_algorithms_cert that forces PKCS#1 cert
 271     $testtype = SIGALGS_CERT_PKCS;
 272     $proxy->clear();
 273     $proxy->filter(\&modify_sigalgs_cert_filter);
 274     $proxy->start();
 275     ok(TLSProxy::Message->success, "sigalgs_cert in TLSv1.3 with PKCS#1 cert");
 276
 277     #Test 24: Insert signature_algorithms_cert that fails
 278     $testtype = SIGALGS_CERT_INVALID;
 279     $proxy->clear();
 280     $proxy->filter(\&modify_sigalgs_cert_filter);
 281     $proxy->start();
 282     ok(TLSProxy::Message->fail, "No matching certificate for sigalgs_cert");
 283 }
 284
 285
 286
 287 sub sigalgs_filter
 288 {
 289     my $proxy = shift;
 290
 291     # We're only interested in the initial ClientHello
 292     if ($proxy->flight != 0) {
 293         return;
 294     }
 295
 296     foreach my $message (@{$proxy->message_list}) {
 297         if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
 298             if ($testtype == NO_SIG_ALGS_EXT) {
 299                 $message->delete_extension(TLSProxy::Message::EXT_SIG_ALGS);
 300             } else {
 301                 my $sigalg;
 302                 if ($testtype == EMPTY_SIG_ALGS_EXT) {
 303                     $sigalg = pack "C2", 0x00, 0x00;
 304                 } elsif ($testtype == NO_KNOWN_SIG_ALGS) {
 305                     $sigalg = pack "C4", 0x00, 0x02, 0xff, 0xff;
 306                 } elsif ($testtype == NO_PSS_SIG_ALGS) {
 307                     #No PSS sig algs - just send rsa_pkcs1_sha256
 308                     $sigalg = pack "C4", 0x00, 0x02, 0x04, 0x01;
 309                 } else {
 310                     #PSS sig algs only - just send rsa_pss_rsae_sha256
 311                     $sigalg = pack "C4", 0x00, 0x02, 0x08, 0x04;
 312                 }
 313                 $message->set_extension(TLSProxy::Message::EXT_SIG_ALGS, $sigalg);
 314             }
 315
 316             $message->repack();
 317         }
 318     }
 319 }
 320
 321 sub modify_sigalgs_filter
 322 {
 323     my $proxy = shift;
 324
 325     # We're only interested in the initial ClientHello
 326     return if ($proxy->flight != 0);
 327
 328     foreach my $message (@{$proxy->message_list}) {
 329         my $ext;
 330         my @algs;
 331
 332         if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
 333             if ($testtype == PURE_SIGALGS) {
 334                 my $ok = 1;
 335                 $ext = $message->extension_data->{TLSProxy::Message::EXT_SIG_ALGS};
 336                 @algs = unpack('S>*', $ext);
 337                 # unpack will unpack the length as well
 338                 shift @algs;
 339                 foreach (@algs) {
 340                     if ($_ == TLSProxy::Message::SIG_ALG_DSA_SHA256
 341                         || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA384
 342                         || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA512
 343                         || $_ == TLSProxy::Message::OSSL_SIG_ALG_DSA_SHA224
 344                         || $_ == TLSProxy::Message::SIG_ALG_RSA_PKCS1_SHA1
 345                         || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA1
 346                         || $_ == TLSProxy::Message::SIG_ALG_ECDSA_SHA1) {
 347                         $ok = 0;
 348                     }
 349                 }
 350                 $sha1_status = $dsa_status = $sha224_status = 1 if ($ok);
 351             } elsif ($testtype == COMPAT_SIGALGS) {
 352                 $ext = $message->extension_data->{TLSProxy::Message::EXT_SIG_ALGS};
 353                 @algs = unpack('S>*', $ext);
 354                 # unpack will unpack the length as well
 355                 shift @algs;
 356                 foreach (@algs) {
 357                     if ($_ == TLSProxy::Message::SIG_ALG_DSA_SHA256
 358                         || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA384
 359                         || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA512) {
 360                         $dsa_status = 1;
 361                     }
 362                     if ($_ == TLSProxy::Message::SIG_ALG_RSA_PKCS1_SHA1
 363                         || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA1
 364                         || $_ == TLSProxy::Message::SIG_ALG_ECDSA_SHA1) {
 365                         $sha1_status = 1;
 366                     }
 367                     if ($_ == TLSProxy::Message::OSSL_SIG_ALG_RSA_PKCS1_SHA224
 368                         || $_ == TLSProxy::Message::OSSL_SIG_ALG_DSA_SHA224
 369                         || $_ == TLSProxy::Message::OSSL_SIG_ALG_ECDSA_SHA224) {
 370                         $sha224_status = 1;
 371                     }
 372                 }
 373             }
 374         }
 375     }
 376 }
 377
 378 sub modify_sigalgs_cert_filter
 379 {
 380     my $proxy = shift;
 381
 382     # We're only interested in the initial ClientHello
 383     if ($proxy->flight != 0) {
 384         return;
 385     }
 386
 387     foreach my $message (@{$proxy->message_list}) {
 388         if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
 389             my $sigs;
 390             # two byte length at front of sigs, then two-byte sigschemes
 391             if ($testtype == SIGALGS_CERT_ALL) {
 392                 $sigs = pack "C26", 0x00, 0x18,
 393                              # rsa_pkcs_sha{256,512}  rsa_pss_rsae_sha{256,512}
 394                              0x04, 0x01,  0x06, 0x01,  0x08, 0x04,  0x08, 0x06,
 395                              # ed25518    ed448        rsa_pss_pss_sha{256,512}
 396                              0x08, 0x07,  0x08, 0x08,  0x08, 0x09,  0x08, 0x0b,
 397                              # ecdsa_secp{256,512}     rsa+sha1     ecdsa+sha1
 398                              0x04, 0x03,  0x06, 0x03,  0x02, 0x01,  0x02, 0x03;
 399             } elsif ($testtype == SIGALGS_CERT_PKCS) {
 400                 $sigs = pack "C10", 0x00, 0x08,
 401                              # rsa_pkcs_sha{256,384,512,1}
 402                              0x04, 0x01,  0x05, 0x01,  0x06, 0x01,  0x02, 0x01;
 403             } elsif ($testtype == SIGALGS_CERT_INVALID) {
 404                 $sigs = pack "C4", 0x00, 0x02,
 405                              # unregistered codepoint
 406                              0xb2, 0x6f;
 407             }
 408             $message->set_extension(TLSProxy::Message::EXT_SIG_ALGS_CERT, $sigs);
 409             $message->repack();
 410         }
 411     }
 412 }
 413
 414 sub modify_cert_verify_sigalg
 415 {
 416     my $proxy = shift;
 417
 418     # We're only interested in the CertificateVerify
 419     if ($proxy->flight != 1) {
 420         return;
 421     }
 422
 423     foreach my $message (@{$proxy->message_list}) {
 424         if ($message->mt == TLSProxy::Message::MT_CERTIFICATE_VERIFY) {
 425             $message->sigalg(TLSProxy::Message::SIG_ALG_RSA_PSS_PSS_SHA256);
 426             $message->repack();
 427         }
 428     }
 429 }