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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "secerr.h"
#include "ssl.h"
#include "ssl3prot.h"
#include "sslerr.h"
#include "sslproto.h"
#include "gtest_utils.h"
#include "scoped_ptrs.h"
#include "tls_connect.h"
#include "tls_filter.h"
#include "tls_parser.h"
namespace nss_test {
TEST_P(TlsConnectStream, ServerNegotiateTls10) {
uint16_t minver, maxver;
client_->GetVersionRange(&minver, &maxver);
client_->SetVersionRange(SSL_LIBRARY_VERSION_TLS_1_0, maxver);
server_->SetVersionRange(SSL_LIBRARY_VERSION_TLS_1_0,
SSL_LIBRARY_VERSION_TLS_1_0);
Connect();
}
TEST_P(TlsConnectGeneric, ServerNegotiateTls11) {
if (version_ < SSL_LIBRARY_VERSION_TLS_1_1) return;
uint16_t minver, maxver;
client_->GetVersionRange(&minver, &maxver);
client_->SetVersionRange(SSL_LIBRARY_VERSION_TLS_1_1, maxver);
server_->SetVersionRange(SSL_LIBRARY_VERSION_TLS_1_1,
SSL_LIBRARY_VERSION_TLS_1_1);
Connect();
}
TEST_P(TlsConnectGeneric, ServerNegotiateTls12) {
if (version_ < SSL_LIBRARY_VERSION_TLS_1_2) return;
uint16_t minver, maxver;
client_->GetVersionRange(&minver, &maxver);
client_->SetVersionRange(SSL_LIBRARY_VERSION_TLS_1_2, maxver);
server_->SetVersionRange(SSL_LIBRARY_VERSION_TLS_1_2,
SSL_LIBRARY_VERSION_TLS_1_2);
Connect();
}
#ifndef TLS_1_3_DRAFT_VERSION
// Test the ServerRandom version hack from
// [draft-ietf-tls-tls13-11 Section 6.3.1.1].
// The first three tests test for active tampering. The next
// two validate that we can also detect fallback using the
// SSL_SetDowngradeCheckVersion() API.
TEST_F(TlsConnectTest, TestDowngradeDetectionToTls11) {
MakeTlsFilter<TlsClientHelloVersionSetter>(client_,
SSL_LIBRARY_VERSION_TLS_1_1);
ConnectExpectFail();
ASSERT_EQ(SSL_ERROR_RX_MALFORMED_SERVER_HELLO, client_->error_code());
}
/* Attempt to negotiate the bogus DTLS 1.1 version. */
TEST_F(DtlsConnectTest, TestDtlsVersion11) {
MakeTlsFilter<TlsClientHelloVersionSetter>(client_, ((~0x0101) & 0xffff));
ConnectExpectFail();
// It's kind of surprising that SSL_ERROR_NO_CYPHER_OVERLAP is
// what is returned here, but this is deliberate in ssl3_HandleAlert().
EXPECT_EQ(SSL_ERROR_NO_CYPHER_OVERLAP, client_->error_code());
EXPECT_EQ(SSL_ERROR_UNSUPPORTED_VERSION, server_->error_code());
}
// Disabled as long as we have draft version.
TEST_F(TlsConnectTest, TestDowngradeDetectionToTls12) {
EnsureTlsSetup();
MakeTlsFilter<TlsClientHelloVersionSetter>(client_,
SSL_LIBRARY_VERSION_TLS_1_2);
client_->SetVersionRange(SSL_LIBRARY_VERSION_TLS_1_2,
SSL_LIBRARY_VERSION_TLS_1_3);
server_->SetVersionRange(SSL_LIBRARY_VERSION_TLS_1_2,
SSL_LIBRARY_VERSION_TLS_1_3);
ConnectExpectFail();
ASSERT_EQ(SSL_ERROR_RX_MALFORMED_SERVER_HELLO, client_->error_code());
}
// TLS 1.1 clients do not check the random values, so we should
// instead get a handshake failure alert from the server.
TEST_F(TlsConnectTest, TestDowngradeDetectionToTls10) {
MakeTlsFilter<TlsClientHelloVersionSetter>(client_,
SSL_LIBRARY_VERSION_TLS_1_0);
client_->SetVersionRange(SSL_LIBRARY_VERSION_TLS_1_0,
SSL_LIBRARY_VERSION_TLS_1_1);
server_->SetVersionRange(SSL_LIBRARY_VERSION_TLS_1_0,
SSL_LIBRARY_VERSION_TLS_1_2);
ConnectExpectFail();
ASSERT_EQ(SSL_ERROR_BAD_HANDSHAKE_HASH_VALUE, server_->error_code());
ASSERT_EQ(SSL_ERROR_DECRYPT_ERROR_ALERT, client_->error_code());
}
TEST_F(TlsConnectTest, TestFallbackFromTls12) {
EnsureTlsSetup();
client_->SetDowngradeCheckVersion(SSL_LIBRARY_VERSION_TLS_1_2);
client_->SetVersionRange(SSL_LIBRARY_VERSION_TLS_1_1,
SSL_LIBRARY_VERSION_TLS_1_1);
server_->SetVersionRange(SSL_LIBRARY_VERSION_TLS_1_1,
SSL_LIBRARY_VERSION_TLS_1_2);
ConnectExpectFail();
ASSERT_EQ(SSL_ERROR_RX_MALFORMED_SERVER_HELLO, client_->error_code());
}
TEST_F(TlsConnectTest, TestFallbackFromTls13) {
EnsureTlsSetup();
client_->SetDowngradeCheckVersion(SSL_LIBRARY_VERSION_TLS_1_3);
client_->SetVersionRange(SSL_LIBRARY_VERSION_TLS_1_2,
SSL_LIBRARY_VERSION_TLS_1_2);
server_->SetVersionRange(SSL_LIBRARY_VERSION_TLS_1_1,
SSL_LIBRARY_VERSION_TLS_1_3);
ConnectExpectFail();
ASSERT_EQ(SSL_ERROR_RX_MALFORMED_SERVER_HELLO, client_->error_code());
}
#endif
TEST_P(TlsConnectGeneric, TestFallbackSCSVVersionMatch) {
client_->SetOption(SSL_ENABLE_FALLBACK_SCSV, PR_TRUE);
Connect();
}
TEST_P(TlsConnectGenericPre13, TestFallbackSCSVVersionMismatch) {
client_->SetOption(SSL_ENABLE_FALLBACK_SCSV, PR_TRUE);
server_->SetVersionRange(version_, version_ + 1);
ConnectExpectAlert(server_, kTlsAlertInappropriateFallback);
client_->CheckErrorCode(SSL_ERROR_INAPPROPRIATE_FALLBACK_ALERT);
}
// The TLS v1.3 spec section C.4 states that 'Implementations MUST NOT send or
// accept any records with a version less than { 3, 0 }'. Thus we will not
// allow version ranges including both SSL v3 and TLS v1.3.
TEST_F(TlsConnectTest, DisallowSSLv3HelloWithTLSv13Enabled) {
SECStatus rv;
SSLVersionRange vrange = {SSL_LIBRARY_VERSION_3_0,
SSL_LIBRARY_VERSION_TLS_1_3};
EnsureTlsSetup();
rv = SSL_VersionRangeSet(client_->ssl_fd(), &vrange);
EXPECT_EQ(SECFailure, rv);
rv = SSL_VersionRangeSet(server_->ssl_fd(), &vrange);
EXPECT_EQ(SECFailure, rv);
}
TEST_P(TlsConnectGeneric, AlertBeforeServerHello) {
EnsureTlsSetup();
client_->ExpectReceiveAlert(kTlsAlertUnrecognizedName, kTlsAlertWarning);
StartConnect();
client_->Handshake(); // Send ClientHello.
static const uint8_t kWarningAlert[] = {kTlsAlertWarning,
kTlsAlertUnrecognizedName};
DataBuffer alert;
TlsAgentTestBase::MakeRecord(variant_, kTlsAlertType,
SSL_LIBRARY_VERSION_TLS_1_0, kWarningAlert,
PR_ARRAY_SIZE(kWarningAlert), &alert);
client_->adapter()->PacketReceived(alert);
Handshake();
CheckConnected();
}
class Tls13NoSupportedVersions : public TlsConnectStreamTls12 {
protected:
void Run(uint16_t overwritten_client_version, uint16_t max_server_version) {
client_->SetVersionRange(SSL_LIBRARY_VERSION_TLS_1_2,
SSL_LIBRARY_VERSION_TLS_1_2);
server_->SetVersionRange(SSL_LIBRARY_VERSION_TLS_1_2, max_server_version);
MakeTlsFilter<TlsClientHelloVersionSetter>(client_,
overwritten_client_version);
auto capture =
MakeTlsFilter<TlsHandshakeRecorder>(server_, kTlsHandshakeServerHello);
ConnectExpectAlert(server_, kTlsAlertDecryptError);
client_->CheckErrorCode(SSL_ERROR_DECRYPT_ERROR_ALERT);
server_->CheckErrorCode(SSL_ERROR_BAD_HANDSHAKE_HASH_VALUE);
const DataBuffer& server_hello = capture->buffer();
ASSERT_GT(server_hello.len(), 2U);
uint32_t ver;
ASSERT_TRUE(server_hello.Read(0, 2, &ver));
ASSERT_EQ(static_cast<uint32_t>(SSL_LIBRARY_VERSION_TLS_1_2), ver);
}
};
// If we offer a 1.3 ClientHello w/o supported_versions, the server should
// negotiate 1.2.
TEST_F(Tls13NoSupportedVersions,
Tls13ClientHelloWithoutSupportedVersionsServer12) {
Run(SSL_LIBRARY_VERSION_TLS_1_3, SSL_LIBRARY_VERSION_TLS_1_2);
}
TEST_F(Tls13NoSupportedVersions,
Tls13ClientHelloWithoutSupportedVersionsServer13) {
Run(SSL_LIBRARY_VERSION_TLS_1_3, SSL_LIBRARY_VERSION_TLS_1_3);
}
TEST_F(Tls13NoSupportedVersions,
Tls14ClientHelloWithoutSupportedVersionsServer13) {
Run(SSL_LIBRARY_VERSION_TLS_1_3 + 1, SSL_LIBRARY_VERSION_TLS_1_3);
}
// Offer 1.3 but with ClientHello.legacy_version == TLS 1.4. This
// causes a bad MAC error when we read EncryptedExtensions.
TEST_F(TlsConnectStreamTls13, Tls14ClientHelloWithSupportedVersions) {
MakeTlsFilter<TlsClientHelloVersionSetter>(client_,
SSL_LIBRARY_VERSION_TLS_1_3 + 1);
auto capture = MakeTlsFilter<TlsExtensionCapture>(
server_, ssl_tls13_supported_versions_xtn);
client_->ExpectSendAlert(kTlsAlertBadRecordMac);
server_->ExpectSendAlert(kTlsAlertBadRecordMac);
ConnectExpectFail();
client_->CheckErrorCode(SSL_ERROR_BAD_MAC_READ);
server_->CheckErrorCode(SSL_ERROR_BAD_MAC_READ);
ASSERT_EQ(2U, capture->extension().len());
uint32_t version = 0;
ASSERT_TRUE(capture->extension().Read(0, 2, &version));
// This way we don't need to change with new draft version.
ASSERT_LT(static_cast<uint32_t>(SSL_LIBRARY_VERSION_TLS_1_2), version);
}
} // namespace nss_test
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