1 files changed, 126 insertions, 0 deletions
diff --git a/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/test/recipes/70-test_tls13downgrade.t b/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/test/recipes/70-test_tls13downgrade.t
new file mode 100644
index 000000000..bdb360a7d
--- /dev/null
+++ b/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/test/recipes/70-test_tls13downgrade.t
@@ -0,0 +1,126 @@
+#! /usr/bin/env perl
+# Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
+#
+# Licensed under the OpenSSL license (the "License").  You may not use
+# this file except in compliance with the License.  You can obtain a copy
+# in the file LICENSE in the source distribution or at
+# https://www.openssl.org/source/license.html
+
+use strict;
+use OpenSSL::Test qw/:DEFAULT cmdstr srctop_file bldtop_dir/;
+use OpenSSL::Test::Utils;
+use TLSProxy::Proxy;
+
+my $test_name = "test_tls13downgrade";
+setup($test_name);
+
+plan skip_all => "TLSProxy isn't usable on $^O"
+    if $^O =~ /^(VMS)$/;
+
+plan skip_all => "$test_name needs the dynamic engine feature enabled"
+    if disabled("engine") || disabled("dynamic-engine");
+
+plan skip_all => "$test_name needs the sock feature enabled"
+    if disabled("sock");
+
+plan skip_all => "$test_name needs TLS1.3 and TLS1.2 enabled"
+    if disabled("tls1_3") || disabled("tls1_2");
+
+$ENV{OPENSSL_ia32cap} = '~0x200000200000000';
+
+my $proxy = TLSProxy::Proxy->new(
+    undef,
+    cmdstr(app(["openssl"]), display => 1),
+    srctop_file("apps", "server.pem"),
+    (!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE})
+);
+
+use constant {
+    DOWNGRADE_TO_TLS_1_2 => 0,
+    DOWNGRADE_TO_TLS_1_1 => 1,
+    FALLBACK_FROM_TLS_1_3 => 2,
+};
+
+#Test 1: Downgrade from TLSv1.3 to TLSv1.2
+$proxy->filter(\&downgrade_filter);
+my $testtype = DOWNGRADE_TO_TLS_1_2;
+$proxy->start() or plan skip_all => "Unable to start up Proxy for tests";
+plan tests => 6;
+ok(TLSProxy::Message->fail(), "Downgrade TLSv1.3 to TLSv1.2");
+
+#Test 2: Downgrade from TLSv1.3 to TLSv1.1
+$proxy->clear();
+$testtype = DOWNGRADE_TO_TLS_1_1;
+$proxy->start();
+ok(TLSProxy::Message->fail(), "Downgrade TLSv1.3 to TLSv1.1");
+
+#Test 3: Downgrade from TLSv1.2 to TLSv1.1
+$proxy->clear();
+$proxy->clientflags("-no_tls1_3");
+$proxy->serverflags("-no_tls1_3");
+$proxy->start();
+ok(TLSProxy::Message->fail(), "Downgrade TLSv1.2 to TLSv1.1");
+
+#Test 4: Client falls back from TLSv1.3 (server does not support the fallback
+#        SCSV)
+$proxy->clear();
+$testtype = FALLBACK_FROM_TLS_1_3;
+$proxy->clientflags("-fallback_scsv -no_tls1_3");
+$proxy->start();
+my $alert = TLSProxy::Message->alert();
+ok(TLSProxy::Message->fail()
+   && !$alert->server()
+   && $alert->description() == TLSProxy::Message::AL_DESC_ILLEGAL_PARAMETER,
+   "Fallback from TLSv1.3");
+
+SKIP: {
+    skip "TLSv1.1 disabled", 2 if disabled("tls1_1");
+    #Test 5: A client side protocol "hole" should not be detected as a downgrade
+    $proxy->clear();
+    $proxy->filter(undef);
+    $proxy->clientflags("-no_tls1_2");
+    $proxy->start();
+    ok(TLSProxy::Message->success(), "TLSv1.2 client-side protocol hole");
+
+    #Test 6: A server side protocol "hole" should not be detected as a downgrade
+    $proxy->clear();
+    $proxy->filter(undef);
+    $proxy->serverflags("-no_tls1_2");
+    $proxy->start();
+    ok(TLSProxy::Message->success(), "TLSv1.2 server-side protocol hole");
+}
+
+sub downgrade_filter
+{
+    my $proxy = shift;
+
+    # We're only interested in the initial ClientHello
+    if ($proxy->flight != 0) {
+        return;
+    }
+
+    my $message = ${$proxy->message_list}[0];
+
+    my $ext;
+    if ($testtype == FALLBACK_FROM_TLS_1_3) {
+        #The default ciphersuite we use for TLSv1.2 without any SCSV
+        my @ciphersuites = (TLSProxy::Message::CIPHER_RSA_WITH_AES_128_CBC_SHA);
+        $message->ciphersuite_len(2 * scalar @ciphersuites);
+        $message->ciphersuites(\@ciphersuites);
+    } else {
+        if ($testtype == DOWNGRADE_TO_TLS_1_2) {
+            $ext = pack "C3",
+                0x02, # Length
+                0x03, 0x03; #TLSv1.2
+        } else {
+            $ext = pack "C3",
+                0x02, # Length
+                0x03, 0x02; #TLSv1.1
+        }
+
+        $message->set_extension(TLSProxy::Message::EXT_SUPPORTED_VERSIONS, $ext);
+    }
+
+    $message->repack();
+}
+