/* -*- 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) { client_->SetPacketFilter( std::make_shared( 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) { client_->SetPacketFilter( std::make_shared( ((~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(); client_->SetPacketFilter( std::make_shared( 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) { client_->SetPacketFilter( std::make_shared( 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); client_->SetPacketFilter( std::make_shared( overwritten_client_version)); auto capture = std::make_shared( kTlsHandshakeServerHello); server_->SetPacketFilter(capture); 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(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) { client_->SetPacketFilter( std::make_shared( SSL_LIBRARY_VERSION_TLS_1_3 + 1)); auto capture = std::make_shared(ssl_tls13_supported_versions_xtn); server_->SetPacketFilter(capture); 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(SSL_LIBRARY_VERSION_TLS_1_2), version); } } // namespace nss_test