1#! /usr/bin/env perl 2# Copyright 2016-2024 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 9use strict; 10use List::Util 'first'; 11use OpenSSL::Test qw/:DEFAULT cmdstr srctop_file bldtop_dir/; 12use OpenSSL::Test::Utils; 13use TLSProxy::Proxy; 14 15my $test_name = "test_renegotiation"; 16setup($test_name); 17 18plan skip_all => "TLSProxy isn't usable on $^O" 19 if $^O =~ /^(VMS)$/; 20 21plan skip_all => "$test_name needs the dynamic engine feature enabled" 22 if disabled("engine") || disabled("dynamic-engine"); 23 24plan skip_all => "$test_name needs the sock feature enabled" 25 if disabled("sock"); 26 27plan skip_all => "$test_name needs TLS <= 1.2 enabled" 28 if alldisabled(("ssl3", "tls1", "tls1_1", "tls1_2")); 29 30plan tests => 9; 31 32my $proxy = TLSProxy::Proxy->new( 33 undef, 34 cmdstr(app(["openssl"]), display => 1), 35 srctop_file("apps", "server.pem"), 36 (!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE}) 37); 38 39#Test 1: A basic renegotiation test 40$proxy->clientflags("-no_tls1_3"); 41$proxy->serverflags("-client_renegotiation"); 42$proxy->reneg(1); 43$proxy->start() or plan skip_all => "Unable to start up Proxy for tests"; 44ok(TLSProxy::Message->success(), "Basic renegotiation"); 45 46#Test 2: Seclevel 0 client does not send the Reneg SCSV. Reneg should fail 47$proxy->clear(); 48$proxy->filter(\&reneg_scsv_filter); 49$proxy->cipherc("DEFAULT:\@SECLEVEL=0"); 50$proxy->clientflags("-no_tls1_3"); 51$proxy->serverflags("-client_renegotiation"); 52$proxy->reneg(1); 53$proxy->start(); 54ok(TLSProxy::Message->fail(), "No client SCSV"); 55 56SKIP: { 57 skip "TLSv1.2 disabled", 1 58 if disabled("tls1_2"); 59 60 #Test 3: TLS 1.2 client does not send the Reneg extension. Reneg should fail 61 62 $proxy->clear(); 63 $proxy->cipherc("DEFAULT:\@SECLEVEL=2"); 64 $proxy->filter(\&reneg_ext_filter); 65 $proxy->clientflags("-no_tls1_3"); 66 $proxy->serverflags("-client_renegotiation"); 67 $proxy->reneg(1); 68 $proxy->start(); 69 ok(TLSProxy::Message->fail(), "No client extension"); 70} 71 72SKIP: { 73 skip "TLSv1.2 or TLSv1.1 disabled", 1 74 if disabled("tls1_2") || disabled("tls1_1"); 75 #Test 4: Check that the ClientHello version remains the same in the reneg 76 # handshake 77 $proxy->clear(); 78 $proxy->filter(undef); 79 $proxy->ciphers("DEFAULT:\@SECLEVEL=0"); 80 $proxy->clientflags("-no_tls1_3 -cipher AES128-SHA:\@SECLEVEL=0"); 81 $proxy->serverflags("-no_tls1_3 -no_tls1_2 -client_renegotiation"); 82 $proxy->reneg(1); 83 $proxy->start(); 84 my $chversion; 85 my $chmatch = 0; 86 foreach my $message (@{$proxy->message_list}) { 87 if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) { 88 if (!defined $chversion) { 89 $chversion = $message->client_version; 90 } else { 91 if ($chversion == $message->client_version) { 92 $chmatch = 1; 93 } 94 } 95 } 96 } 97 ok(TLSProxy::Message->success() && $chmatch, 98 "Check ClientHello version is the same"); 99} 100 101SKIP: { 102 skip "TLSv1.2 disabled", 1 103 if disabled("tls1_2"); 104 105 #Test 5: Test for CVE-2021-3449. client_sig_algs instead of sig_algs in 106 # resumption ClientHello 107 $proxy->clear(); 108 $proxy->filter(\&sigalgs_filter); 109 $proxy->clientflags("-tls1_2"); 110 $proxy->serverflags("-client_renegotiation"); 111 $proxy->reneg(1); 112 $proxy->start(); 113 ok(TLSProxy::Message->fail(), "client_sig_algs instead of sig_algs"); 114} 115 116SKIP: { 117 skip "TLSv1.2 and TLSv1.1 disabled", 1 118 if disabled("tls1_2") && disabled("tls1_1"); 119 #Test 6: Client fails to do renegotiation 120 $proxy->clear(); 121 $proxy->filter(undef); 122 $proxy->serverflags("-no_tls1_3"); 123 $proxy->clientflags("-no_tls1_3"); 124 $proxy->reneg(1); 125 $proxy->start(); 126 ok(TLSProxy::Message->fail(), 127 "Check client renegotiation failed"); 128} 129 130SKIP: { 131 skip "TLSv1 disabled", 1 132 if disabled("tls1"); 133 134 #Test 7: Check that SECLEVEL 0 sends SCSV not RI extension 135 $proxy->clear(); 136 $proxy->filter(undef); 137 $proxy->cipherc("DEFAULT:\@SECLEVEL=0"); 138 $proxy->start(); 139 140 my $clientHello = first { $_->mt == TLSProxy::Message::MT_CLIENT_HELLO } @{$proxy->message_list}; 141 my $has_scsv = 255 ~~ @{$clientHello->ciphersuites}; 142 my $has_ri_extension = exists $clientHello->extension_data()->{TLSProxy::Message::EXT_RENEGOTIATE}; 143 144 ok($has_scsv && !$has_ri_extension, "SECLEVEL=0 should use SCSV not RI extension by default"); 145} 146 147SKIP: { 148 skip "TLSv1.2 disabled", 1 149 if disabled("tls1_2"); 150 151 #Test 8: Check that SECLEVEL0 + TLS 1.2 sends RI extension not SCSV 152 $proxy->clear(); 153 $proxy->filter(undef); 154 $proxy->cipherc("DEFAULT:\@SECLEVEL=0"); 155 $proxy->clientflags("-tls1_2"); 156 $proxy->start(); 157 158 my $clientHello = first { $_->mt == TLSProxy::Message::MT_CLIENT_HELLO } @{$proxy->message_list}; 159 my $has_scsv = 255 ~~ @{$clientHello->ciphersuites}; 160 my $has_ri_extension = exists $clientHello->extension_data()->{TLSProxy::Message::EXT_RENEGOTIATE}; 161 162 ok(!$has_scsv && $has_ri_extension, "TLS1.2 should use RI extension despite SECLEVEL=0"); 163} 164 165 166SKIP: { 167 skip "TLSv1.3 disabled", 1 168 if disabled("tls1_3"); 169 170 #Test 9: Check that TLS 1.3 sends neither RI extension nor SCSV 171 $proxy->clear(); 172 $proxy->filter(undef); 173 $proxy->clientflags("-tls1_3"); 174 $proxy->start(); 175 176 my $clientHello = first { $_->mt == TLSProxy::Message::MT_CLIENT_HELLO } @{$proxy->message_list}; 177 my $has_scsv = 255 ~~ @{$clientHello->ciphersuites}; 178 my $has_ri_extension = exists $clientHello->extension_data()->{TLSProxy::Message::EXT_RENEGOTIATE}; 179 180 ok(!$has_scsv && !$has_ri_extension, "TLS1.3 should not use RI extension or SCSV"); 181} 182 183sub reneg_scsv_filter 184{ 185 my $proxy = shift; 186 187 # We're only interested in the initial ClientHello message 188 if ($proxy->flight != 0) { 189 return; 190 } 191 192 foreach my $message (@{$proxy->message_list}) { 193 if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) { 194 #Remove any SCSV ciphersuites - just leave AES128-SHA (0x002f) 195 my @ciphersuite = (0x002f); 196 $message->ciphersuites(\@ciphersuite); 197 $message->ciphersuite_len(2); 198 $message->repack(); 199 } 200 } 201} 202 203sub reneg_ext_filter 204{ 205 my $proxy = shift; 206 207 # We're only interested in the initial ClientHello message 208 if ($proxy->flight != 0) { 209 return; 210 } 211 212 foreach my $message (@{$proxy->message_list}) { 213 if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) { 214 $message->delete_extension(TLSProxy::Message::EXT_RENEGOTIATE); 215 $message->repack(); 216 } 217 } 218} 219 220sub sigalgs_filter 221{ 222 my $proxy = shift; 223 my $cnt = 0; 224 225 # We're only interested in the second ClientHello message 226 foreach my $message (@{$proxy->message_list}) { 227 if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) { 228 next if ($cnt++ == 0); 229 230 my $sigs = pack "C10", 0x00, 0x08, 231 # rsa_pkcs_sha{256,384,512,1} 232 0x04, 0x01, 0x05, 0x01, 0x06, 0x01, 0x02, 0x01; 233 $message->set_extension(TLSProxy::Message::EXT_SIG_ALGS_CERT, $sigs); 234 $message->delete_extension(TLSProxy::Message::EXT_SIG_ALGS); 235 $message->repack(); 236 } 237 } 238} 239