diff options
Diffstat (limited to 'nss/gtests/ssl_gtest/ssl_version_unittest.cc')
| -rw-r--r-- | nss/gtests/ssl_gtest/ssl_version_unittest.cc | 300 |
1 files changed, 300 insertions, 0 deletions
diff --git a/nss/gtests/ssl_gtest/ssl_version_unittest.cc b/nss/gtests/ssl_gtest/ssl_version_unittest.cc new file mode 100644 index 0000000..b353849 --- /dev/null +++ b/nss/gtests/ssl_gtest/ssl_version_unittest.cc @@ -0,0 +1,300 @@ +/* -*- 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( + new TlsInspectorClientHelloVersionSetter(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( + new TlsInspectorClientHelloVersionSetter(((~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( + new TlsInspectorClientHelloVersionSetter(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( + new TlsInspectorClientHelloVersionSetter(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 + +// 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(TlsConnectStream, ConnectTls10AndServerRenegotiateHigher) { + if (version_ == SSL_LIBRARY_VERSION_TLS_1_0) { + return; + } + // Set the client so it will accept any version from 1.0 + // to |version_|. + client_->SetVersionRange(SSL_LIBRARY_VERSION_TLS_1_0, version_); + server_->SetVersionRange(SSL_LIBRARY_VERSION_TLS_1_0, + SSL_LIBRARY_VERSION_TLS_1_0); + // Reset version so that the checks succeed. + uint16_t test_version = version_; + version_ = SSL_LIBRARY_VERSION_TLS_1_0; + Connect(); + + // Now renegotiate, with the server being set to do + // |version_|. + client_->PrepareForRenegotiate(); + server_->SetVersionRange(SSL_LIBRARY_VERSION_TLS_1_0, test_version); + // Reset version and cipher suite so that the preinfo callback + // doesn't fail. + server_->ResetPreliminaryInfo(); + server_->StartRenegotiate(); + Handshake(); + if (test_version >= SSL_LIBRARY_VERSION_TLS_1_3) { + // In TLS 1.3, the server detects this problem. + client_->CheckErrorCode(SSL_ERROR_HANDSHAKE_UNEXPECTED_ALERT); + server_->CheckErrorCode(SSL_ERROR_RENEGOTIATION_NOT_ALLOWED); + } else { + client_->CheckErrorCode(SSL_ERROR_UNSUPPORTED_VERSION); + server_->CheckErrorCode(SSL_ERROR_ILLEGAL_PARAMETER_ALERT); + } +} + +TEST_P(TlsConnectStream, ConnectTls10AndClientRenegotiateHigher) { + if (version_ == SSL_LIBRARY_VERSION_TLS_1_0) { + return; + } + // Set the client so it will accept any version from 1.0 + // to |version_|. + client_->SetVersionRange(SSL_LIBRARY_VERSION_TLS_1_0, version_); + server_->SetVersionRange(SSL_LIBRARY_VERSION_TLS_1_0, + SSL_LIBRARY_VERSION_TLS_1_0); + // Reset version so that the checks succeed. + uint16_t test_version = version_; + version_ = SSL_LIBRARY_VERSION_TLS_1_0; + Connect(); + + // Now renegotiate, with the server being set to do + // |version_|. + server_->PrepareForRenegotiate(); + server_->SetVersionRange(SSL_LIBRARY_VERSION_TLS_1_0, test_version); + // Reset version and cipher suite so that the preinfo callback + // doesn't fail. + server_->ResetPreliminaryInfo(); + client_->StartRenegotiate(); + Handshake(); + if (test_version >= SSL_LIBRARY_VERSION_TLS_1_3) { + // In TLS 1.3, the server detects this problem. + client_->CheckErrorCode(SSL_ERROR_HANDSHAKE_UNEXPECTED_ALERT); + server_->CheckErrorCode(SSL_ERROR_RENEGOTIATION_NOT_ALLOWED); + } else { + client_->CheckErrorCode(SSL_ERROR_UNSUPPORTED_VERSION); + server_->CheckErrorCode(SSL_ERROR_ILLEGAL_PARAMETER_ALERT); + } +} + +TEST_F(TlsConnectTest, Tls13RejectsRehandshakeClient) { + EnsureTlsSetup(); + ConfigureVersion(SSL_LIBRARY_VERSION_TLS_1_3); + Connect(); + SECStatus rv = SSL_ReHandshake(client_->ssl_fd(), PR_TRUE); + EXPECT_EQ(SECFailure, rv); + EXPECT_EQ(SSL_ERROR_RENEGOTIATION_NOT_ALLOWED, PORT_GetError()); +} + +TEST_F(TlsConnectTest, Tls13RejectsRehandshakeServer) { + EnsureTlsSetup(); + ConfigureVersion(SSL_LIBRARY_VERSION_TLS_1_3); + Connect(); + SECStatus rv = SSL_ReHandshake(server_->ssl_fd(), PR_TRUE); + EXPECT_EQ(SECFailure, rv); + EXPECT_EQ(SSL_ERROR_RENEGOTIATION_NOT_ALLOWED, PORT_GetError()); +} + +TEST_P(TlsConnectGeneric, AlertBeforeServerHello) { + EnsureTlsSetup(); + client_->StartConnect(); + server_->StartConnect(); + client_->Handshake(); // Send ClientHello. + static const uint8_t kWarningAlert[] = {kTlsAlertWarning, + kTlsAlertUnrecognizedName}; + DataBuffer alert; + TlsAgentTestBase::MakeRecord(mode_, 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( + new TlsInspectorClientHelloVersionSetter(overwritten_client_version)); + auto capture = + new TlsInspectorRecordHandshakeMessage(kTlsHandshakeServerHello); + server_->SetPacketFilter(capture); + ConnectExpectFail(); + 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) { + client_->SetPacketFilter(new TlsInspectorClientHelloVersionSetter( + SSL_LIBRARY_VERSION_TLS_1_3 + 1)); + auto capture = + new TlsInspectorRecordHandshakeMessage(kTlsHandshakeServerHello); + server_->SetPacketFilter(capture); + ConnectExpectFail(); + client_->CheckErrorCode(SSL_ERROR_BAD_MAC_READ); + server_->CheckErrorCode(SSL_ERROR_BAD_MAC_READ); + const DataBuffer& server_hello = capture->buffer(); + ASSERT_GT(server_hello.len(), 2U); + uint32_t ver; + ASSERT_TRUE(server_hello.Read(0, 2, &ver)); + // This way we don't need to change with new draft version. + ASSERT_LT(static_cast<uint32_t>(SSL_LIBRARY_VERSION_TLS_1_2), ver); +} + +} // namespace nss_test |