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#! /usr/bin/env perl
# Copyright 2016-2021 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 $test_name = "test_renegotiation";
setup($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 TLS <= 1.2 enabled"
if alldisabled(("ssl3", "tls1", "tls1_1", "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})
);
#Test 1: A basic renegotiation test
$proxy->clientflags("-no_tls1_3");
$proxy->reneg(1);
$proxy->start() or plan skip_all => "Unable to start up Proxy for tests";
plan tests => 4;
ok(TLSProxy::Message->success(), "Basic renegotiation");
#Test 2: Client does not send the Reneg SCSV. Reneg should fail
$proxy->clear();
$proxy->filter(\&reneg_filter);
$proxy->clientflags("-no_tls1_3");
$proxy->reneg(1);
$proxy->start();
ok(TLSProxy::Message->fail(), "No client SCSV");
SKIP: {
skip "TLSv1.2 or TLSv1.1 disabled", 1
if disabled("tls1_2") || disabled("tls1_1");
#Test 3: Check that the ClientHello version remains the same in the reneg
# handshake
$proxy->clear();
$proxy->filter(undef);
$proxy->clientflags("-no_tls1_3");
$proxy->serverflags("-no_tls1_3 -no_tls1_2");
$proxy->reneg(1);
$proxy->start();
my $chversion;
my $chmatch = 0;
foreach my $message (@{$proxy->message_list}) {
if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
if (!defined $chversion) {
$chversion = $message->client_version;
} else {
if ($chversion == $message->client_version) {
$chmatch = 1;
}
}
}
}
ok(TLSProxy::Message->success() && $chmatch,
"Check ClientHello version is the same");
}
SKIP: {
skip "TLSv1.2 disabled", 1
if disabled("tls1_2");
#Test 4: Test for CVE-2021-3449. client_sig_algs instead of sig_algs in
# resumption ClientHello
$proxy->clear();
$proxy->filter(\&sigalgs_filter);
$proxy->clientflags("-tls1_2");
$proxy->reneg(1);
$proxy->start();
ok(TLSProxy::Message->fail(), "client_sig_algs instead of sig_algs");
}
sub reneg_filter
{
my $proxy = shift;
# We're only interested in the initial ClientHello message
if ($proxy->flight != 0) {
return;
}
foreach my $message (@{$proxy->message_list}) {
if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
#Remove any SCSV ciphersuites - just leave AES128-SHA (0x002f)
my @ciphersuite = (0x002f);
$message->ciphersuites(\@ciphersuite);
$message->ciphersuite_len(2);
$message->repack();
}
}
}
sub sigalgs_filter
{
my $proxy = shift;
my $cnt = 0;
# We're only interested in the second ClientHello message
foreach my $message (@{$proxy->message_list}) {
if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
next if ($cnt++ == 0);
my $sigs = pack "C10", 0x00, 0x08,
# rsa_pkcs_sha{256,384,512,1}
0x04, 0x01, 0x05, 0x01, 0x06, 0x01, 0x02, 0x01;
$message->set_extension(TLSProxy::Message::EXT_SIG_ALGS_CERT, $sigs);
$message->delete_extension(TLSProxy::Message::EXT_SIG_ALGS);
$message->repack();
}
}
}
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