2 # Copyright 2016-2020 The OpenSSL Project Authors. All Rights Reserved.
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
10 use OpenSSL::Test qw/:DEFAULT cmdstr srctop_file bldtop_dir/;
11 use OpenSSL::Test::Utils;
14 my $test_name = "test_sslsigalgs";
17 plan skip_all => "TLSProxy isn't usable on $^O"
20 plan skip_all => "$test_name needs the dynamic engine feature enabled"
21 if disabled("engine") || disabled("dynamic-engine");
23 plan skip_all => "$test_name needs the sock feature enabled"
26 plan skip_all => "$test_name needs TLS1.2 or TLS1.3 enabled"
27 if disabled("tls1_2") && disabled("tls1_3");
29 $ENV{OPENSSL_ia32cap} = '~0x200000200000000';
30 my $proxy = TLSProxy::Proxy->new(
32 cmdstr(app(["openssl"]), display => 1),
33 srctop_file("apps", "server.pem"),
34 (!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE})
39 EMPTY_SIG_ALGS_EXT => 1,
40 NO_KNOWN_SIG_ALGS => 2,
42 PSS_ONLY_SIG_ALGS => 4,
45 SIGALGS_CERT_ALL => 7,
46 SIGALGS_CERT_PKCS => 8,
47 SIGALGS_CERT_INVALID => 9,
48 UNRECOGNIZED_SIGALGS_CERT => 10,
49 UNRECOGNIZED_SIGALG => 11
52 #Note: Throughout this test we override the default ciphersuites where TLSv1.2
53 # is expected to ensure that a ServerKeyExchange message is sent that uses
56 #Test 1: Default sig algs should succeed
57 $proxy->start() or plan skip_all => "Unable to start up Proxy for tests";
59 ok(TLSProxy::Message->success, "Default sigalgs");
63 skip "TLSv1.3 disabled", 6 if disabled("tls1_3");
65 $proxy->filter(\&sigalgs_filter);
67 #Test 2: Sending no sig algs extension in TLSv1.3 should fail
69 $testtype = NO_SIG_ALGS_EXT;
71 ok(TLSProxy::Message->fail, "No TLSv1.3 sigalgs");
73 #Test 3: Sending an empty sig algs extension in TLSv1.3 should fail
75 $testtype = EMPTY_SIG_ALGS_EXT;
77 ok(TLSProxy::Message->fail, "Empty TLSv1.3 sigalgs");
79 #Test 4: Sending a list with no recognised sig algs in TLSv1.3 should fail
81 $testtype = NO_KNOWN_SIG_ALGS;
83 ok(TLSProxy::Message->fail, "No known TLSv1.3 sigalgs");
85 #Test 5: Sending a sig algs list without pss for an RSA cert in TLSv1.3
88 $testtype = NO_PSS_SIG_ALGS;
90 ok(TLSProxy::Message->fail, "No PSS TLSv1.3 sigalgs");
92 #Test 6: Sending only TLSv1.3 PSS sig algs in TLSv1.3 should succeed
93 #TODO(TLS1.3): Do we need to verify the cert to make sure its a PSS only
96 $testtype = PSS_ONLY_SIG_ALGS;
98 ok(TLSProxy::Message->success, "PSS only sigalgs in TLSv1.3");
100 #Test 7: Modify the CertificateVerify sigalg from rsa_pss_rsae_sha256 to
101 # rsa_pss_pss_sha256. This should fail because the public key OID
102 # in the certificate is rsaEncryption and not rsassaPss
103 $proxy->filter(\&modify_cert_verify_sigalg);
106 ok(TLSProxy::Message->fail,
107 "Mismatch between CertVerify sigalg and public key OID");
111 skip "EC or TLSv1.3 disabled", 1
112 if disabled("tls1_3") || disabled("ec");
113 #Test 8: Sending a valid sig algs list but not including a sig type that
114 # matches the certificate should fail in TLSv1.3.
116 $proxy->clientflags("-sigalgs ECDSA+SHA256");
117 $proxy->filter(undef);
119 ok(TLSProxy::Message->fail, "No matching TLSv1.3 sigalgs");
123 skip "EC, TLSv1.3 or TLSv1.2 disabled", 1
124 if disabled("tls1_2") || disabled("tls1_3") || disabled("ec");
126 #Test 9: Sending a full list of TLSv1.3 sig algs but negotiating TLSv1.2
129 $proxy->serverflags("-no_tls1_3");
130 $proxy->ciphers("ECDHE-RSA-AES128-SHA");
131 $proxy->filter(undef);
133 ok(TLSProxy::Message->success, "TLSv1.3 client TLSv1.2 server");
137 skip "EC or TLSv1.2 disabled", 10 if disabled("tls1_2") || disabled("ec");
139 $proxy->filter(\&sigalgs_filter);
141 #Test 10: Sending no sig algs extension in TLSv1.2 should succeed at
144 $testtype = NO_SIG_ALGS_EXT;
145 $proxy->clientflags("-no_tls1_3 -cipher DEFAULT\@SECLEVEL=1");
146 $proxy->ciphers("ECDHE-RSA-AES128-SHA\@SECLEVEL=1");
148 ok(TLSProxy::Message->success, "No TLSv1.2 sigalgs seclevel 1");
150 #Test 11: Sending no sig algs extension in TLSv1.2 should fail at security
151 # level 2 since it will try to use SHA1. Testing client at level 1,
154 $testtype = NO_SIG_ALGS_EXT;
155 $proxy->clientflags("-tls1_2 -cipher DEFAULT\@SECLEVEL=1");
156 $proxy->ciphers("DEFAULT\@SECLEVEL=2");
158 ok(TLSProxy::Message->fail, "No TLSv1.2 sigalgs server seclevel 2");
160 #Test 12: Sending no sig algs extension in TLSv1.2 should fail at security
161 # level 2 since it will try to use SHA1. Testing client at level 2,
164 $testtype = NO_SIG_ALGS_EXT;
165 $proxy->clientflags("-tls1_2 -cipher DEFAULT\@SECLEVEL=2");
166 $proxy->ciphers("DEFAULT\@SECLEVEL=1");
168 ok(TLSProxy::Message->fail, "No TLSv1.2 sigalgs client seclevel 2");
170 #Test 13: Sending an empty sig algs extension in TLSv1.2 should fail
172 $testtype = EMPTY_SIG_ALGS_EXT;
173 $proxy->clientflags("-no_tls1_3");
174 $proxy->ciphers("ECDHE-RSA-AES128-SHA");
176 ok(TLSProxy::Message->fail, "Empty TLSv1.2 sigalgs");
178 #Test 14: Sending a list with no recognised sig algs in TLSv1.2 should fail
180 $testtype = NO_KNOWN_SIG_ALGS;
181 $proxy->clientflags("-no_tls1_3");
182 $proxy->ciphers("ECDHE-RSA-AES128-SHA");
184 ok(TLSProxy::Message->fail, "No known TLSv1.3 sigalgs");
186 #Test 15: Sending a sig algs list without pss for an RSA cert in TLSv1.2
189 $testtype = NO_PSS_SIG_ALGS;
190 $proxy->clientflags("-no_tls1_3");
191 $proxy->ciphers("ECDHE-RSA-AES128-SHA");
193 ok(TLSProxy::Message->success, "No PSS TLSv1.2 sigalgs");
195 #Test 16: Sending only TLSv1.3 PSS sig algs in TLSv1.2 should succeed
197 $testtype = PSS_ONLY_SIG_ALGS;
198 $proxy->serverflags("-no_tls1_3");
199 $proxy->ciphers("ECDHE-RSA-AES128-SHA");
201 ok(TLSProxy::Message->success, "PSS only sigalgs in TLSv1.2");
203 #Test 17: Responding with a sig alg we did not send in TLSv1.2 should fail
204 # We send rsa_pkcs1_sha256 and respond with rsa_pss_rsae_sha256
205 # TODO(TLS1.3): Add a similar test to the TLSv1.3 section above
206 # when we have an API capable of configuring the TLSv1.3 sig algs
208 $testtype = PSS_ONLY_SIG_ALGS;
209 $proxy->clientflags("-no_tls1_3 -sigalgs RSA+SHA256");
210 $proxy->ciphers("ECDHE-RSA-AES128-SHA");
212 ok(TLSProxy::Message->fail, "Sigalg we did not send in TLSv1.2");
214 #Test 18: Sending a valid sig algs list but not including a sig type that
215 # matches the certificate should fail in TLSv1.2
217 $proxy->clientflags("-no_tls1_3 -sigalgs ECDSA+SHA256");
218 $proxy->ciphers("ECDHE-RSA-AES128-SHA");
219 $proxy->filter(undef);
221 ok(TLSProxy::Message->fail, "No matching TLSv1.2 sigalgs");
222 $proxy->filter(\&sigalgs_filter);
224 #Test 19: No sig algs extension, ECDSA cert, TLSv1.2 should succeed
226 $testtype = NO_SIG_ALGS_EXT;
227 $proxy->clientflags("-no_tls1_3");
228 $proxy->serverflags("-cert " . srctop_file("test", "certs",
229 "server-ecdsa-cert.pem") .
230 " -key " . srctop_file("test", "certs",
231 "server-ecdsa-key.pem")),
232 $proxy->ciphers("ECDHE-ECDSA-AES128-SHA");
234 ok(TLSProxy::Message->success, "No TLSv1.2 sigalgs, ECDSA");
237 my ($dsa_status, $sha1_status, $sha224_status);
239 skip "TLSv1.3 disabled", 2 if disabled("tls1_3") || disabled("dsa");
240 #Test 20: signature_algorithms with 1.3-only ClientHello
241 $testtype = PURE_SIGALGS;
242 $dsa_status = $sha1_status = $sha224_status = 0;
244 $proxy->clientflags("-tls1_3");
245 $proxy->filter(\&modify_sigalgs_filter);
247 ok($dsa_status && $sha1_status && $sha224_status,
248 "DSA/SHA2 sigalg sent for 1.3-only ClientHello");
250 #Test 21: signature_algorithms with backwards compatible ClientHello
252 skip "TLSv1.2 disabled", 1 if disabled("tls1_2");
253 $testtype = COMPAT_SIGALGS;
254 $dsa_status = $sha1_status = $sha224_status = 0;
256 $proxy->filter(\&modify_sigalgs_filter);
258 ok($dsa_status && $sha1_status && $sha224_status,
259 "DSA sigalg not sent for compat ClientHello");
264 skip "TLSv1.3 disabled", 3 if disabled("tls1_3");
265 #Test 22: Insert signature_algorithms_cert that match normal sigalgs
266 $testtype = SIGALGS_CERT_ALL;
268 $proxy->filter(\&modify_sigalgs_cert_filter);
270 ok(TLSProxy::Message->success, "sigalgs_cert in TLSv1.3");
272 #Test 23: Insert signature_algorithms_cert that forces PKCS#1 cert
273 $testtype = SIGALGS_CERT_PKCS;
275 $proxy->filter(\&modify_sigalgs_cert_filter);
277 ok(TLSProxy::Message->success, "sigalgs_cert in TLSv1.3 with PKCS#1 cert");
279 #Test 24: Insert signature_algorithms_cert that fails
280 $testtype = SIGALGS_CERT_INVALID;
282 $proxy->filter(\&modify_sigalgs_cert_filter);
284 ok(TLSProxy::Message->fail, "No matching certificate for sigalgs_cert");
288 skip "TLS 1.3 disabled", 2 if disabled("tls1_3");
289 #Test 25: Send an unrecognized signature_algorithms_cert
290 # We should be able to skip over the unrecognized value and use a
291 # valid one that appears later in the list.
293 $proxy->filter(\&inject_unrecognized_sigalg);
294 $proxy->clientflags("-tls1_3");
295 # Use -xcert to get SSL_check_chain() to run in the cert_cb. This is
296 # needed to trigger (e.g.) CVE-2020-1967
297 $proxy->serverflags("" .
298 " -xcert " . srctop_file("test", "certs", "servercert.pem") .
299 " -xkey " . srctop_file("test", "certs", "serverkey.pem") .
300 " -xchain " . srctop_file("test", "certs", "rootcert.pem"));
301 $testtype = UNRECOGNIZED_SIGALGS_CERT;
303 ok(TLSProxy::Message->success(), "Unrecognized sigalg_cert in ClientHello");
305 #Test 26: Send an unrecognized signature_algorithms
306 # We should be able to skip over the unrecognized value and use a
307 # valid one that appears later in the list.
309 $proxy->filter(\&inject_unrecognized_sigalg);
310 $proxy->clientflags("-tls1_3");
311 $proxy->serverflags("" .
312 " -xcert " . srctop_file("test", "certs", "servercert.pem") .
313 " -xkey " . srctop_file("test", "certs", "serverkey.pem") .
314 " -xchain " . srctop_file("test", "certs", "rootcert.pem"));
315 $testtype = UNRECOGNIZED_SIGALG;
317 ok(TLSProxy::Message->success(), "Unrecognized sigalg in ClientHello");
326 # We're only interested in the initial ClientHello
327 if ($proxy->flight != 0) {
331 foreach my $message (@{$proxy->message_list}) {
332 if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
333 if ($testtype == NO_SIG_ALGS_EXT) {
334 $message->delete_extension(TLSProxy::Message::EXT_SIG_ALGS);
337 if ($testtype == EMPTY_SIG_ALGS_EXT) {
338 $sigalg = pack "C2", 0x00, 0x00;
339 } elsif ($testtype == NO_KNOWN_SIG_ALGS) {
340 $sigalg = pack "C4", 0x00, 0x02, 0xff, 0xff;
341 } elsif ($testtype == NO_PSS_SIG_ALGS) {
342 #No PSS sig algs - just send rsa_pkcs1_sha256
343 $sigalg = pack "C4", 0x00, 0x02, 0x04, 0x01;
345 #PSS sig algs only - just send rsa_pss_rsae_sha256
346 $sigalg = pack "C4", 0x00, 0x02, 0x08, 0x04;
348 $message->set_extension(TLSProxy::Message::EXT_SIG_ALGS, $sigalg);
356 sub modify_sigalgs_filter
360 # We're only interested in the initial ClientHello
361 return if ($proxy->flight != 0);
363 foreach my $message (@{$proxy->message_list}) {
367 if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
368 if ($testtype == PURE_SIGALGS) {
370 $ext = $message->extension_data->{TLSProxy::Message::EXT_SIG_ALGS};
371 @algs = unpack('S>*', $ext);
372 # unpack will unpack the length as well
375 if ($_ == TLSProxy::Message::SIG_ALG_DSA_SHA256
376 || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA384
377 || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA512
378 || $_ == TLSProxy::Message::OSSL_SIG_ALG_DSA_SHA224
379 || $_ == TLSProxy::Message::SIG_ALG_RSA_PKCS1_SHA1
380 || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA1
381 || $_ == TLSProxy::Message::SIG_ALG_ECDSA_SHA1) {
385 $sha1_status = $dsa_status = $sha224_status = 1 if ($ok);
386 } elsif ($testtype == COMPAT_SIGALGS) {
387 $ext = $message->extension_data->{TLSProxy::Message::EXT_SIG_ALGS};
388 @algs = unpack('S>*', $ext);
389 # unpack will unpack the length as well
392 if ($_ == TLSProxy::Message::SIG_ALG_DSA_SHA256
393 || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA384
394 || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA512) {
397 if ($_ == TLSProxy::Message::SIG_ALG_RSA_PKCS1_SHA1
398 || $_ == TLSProxy::Message::SIG_ALG_DSA_SHA1
399 || $_ == TLSProxy::Message::SIG_ALG_ECDSA_SHA1) {
402 if ($_ == TLSProxy::Message::OSSL_SIG_ALG_RSA_PKCS1_SHA224
403 || $_ == TLSProxy::Message::OSSL_SIG_ALG_DSA_SHA224
404 || $_ == TLSProxy::Message::OSSL_SIG_ALG_ECDSA_SHA224) {
413 sub modify_sigalgs_cert_filter
417 # We're only interested in the initial ClientHello
418 if ($proxy->flight != 0) {
422 foreach my $message (@{$proxy->message_list}) {
423 if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
425 # two byte length at front of sigs, then two-byte sigschemes
426 if ($testtype == SIGALGS_CERT_ALL) {
427 $sigs = pack "C26", 0x00, 0x18,
428 # rsa_pkcs_sha{256,512} rsa_pss_rsae_sha{256,512}
429 0x04, 0x01, 0x06, 0x01, 0x08, 0x04, 0x08, 0x06,
430 # ed25518 ed448 rsa_pss_pss_sha{256,512}
431 0x08, 0x07, 0x08, 0x08, 0x08, 0x09, 0x08, 0x0b,
432 # ecdsa_secp{256,512} rsa+sha1 ecdsa+sha1
433 0x04, 0x03, 0x06, 0x03, 0x02, 0x01, 0x02, 0x03;
434 } elsif ($testtype == SIGALGS_CERT_PKCS) {
435 $sigs = pack "C10", 0x00, 0x08,
436 # rsa_pkcs_sha{256,384,512,1}
437 0x04, 0x01, 0x05, 0x01, 0x06, 0x01, 0x02, 0x01;
438 } elsif ($testtype == SIGALGS_CERT_INVALID) {
439 $sigs = pack "C4", 0x00, 0x02,
440 # unregistered codepoint
443 $message->set_extension(TLSProxy::Message::EXT_SIG_ALGS_CERT, $sigs);
449 sub modify_cert_verify_sigalg
453 # We're only interested in the CertificateVerify
454 if ($proxy->flight != 1) {
458 foreach my $message (@{$proxy->message_list}) {
459 if ($message->mt == TLSProxy::Message::MT_CERTIFICATE_VERIFY) {
460 $message->sigalg(TLSProxy::Message::SIG_ALG_RSA_PSS_PSS_SHA256);
466 sub inject_unrecognized_sigalg
471 # We're only interested in the initial ClientHello
472 if ($proxy->flight != 0) {
475 if ($testtype == UNRECOGNIZED_SIGALGS_CERT) {
476 $type = TLSProxy::Message::EXT_SIG_ALGS_CERT;
477 } elsif ($testtype == UNRECOGNIZED_SIGALG) {
478 $type = TLSProxy::Message::EXT_SIG_ALGS;
484 0x00, 0x06, #Extension length
485 0xfe, 0x18, #private use
486 0x04, 0x01, #rsa_pkcs1_sha256
487 0x08, 0x04; #rsa_pss_rsae_sha256;
488 my $message = ${$proxy->message_list}[0];
489 $message->set_extension($type, $ext);