Change default TLS options for more security

docs/content/deprecation/features.md

@@ -3,10 +3,11 @@
 This page is maintained and updated periodically to reflect our roadmap and any decisions around feature deprecation.
 
 | Feature                                                     | Deprecated | End of Support | Removal |
-|---------------------------------------------------------------|------------|----------------|---------|
+|-------------------------------------------------------------|------------|----------------|---------|
 | [Pilot Dashboard (Metrics)](#pilot-dashboard-metrics)       | 2.7        | 2.8            | 3.0     |
 | [Pilot Plugins](#pilot-plugins)                             | 2.7        | 2.8            | 3.0     |
 | [Consul Enterprise Namespace](#consul-enterprise-namespace) | 2.8        | N/A            | 3.0     |
+| [TLS 1.0 and 1.1 Support](#tls-10-and-11)                   | N/A        | 2.8            | N/A     |
 
 ## Impact
 
@@ -24,3 +25,7 @@ At 2.9, a new plugin catalog home should be available, decoupled from pilot.
 
 Starting on 2.8 the `namespace` option of Consul and Consul Catalog providers is deprecated, 
 please use the `namespaces` options instead.  
+
+### TLS 1.0 and 1.1
+
+Starting on 2.8 the default TLS options will use the minimum version of TLS 1.2. Of course, it can still be overridden with custom configuration.  

pkg/server/aggregator_test.go

@@ -182,13 +182,7 @@ func Test_mergeConfiguration_tlsOptions(t *testing.T) {
 			desc:  "Nil returns an empty configuration",
 			given: nil,
 			expected: map[string]tls.Options{
-				"default": {
+				"default": tls.DefaultTLSOptions,
-					ALPNProtocols: []string{
-						"h2",
-						"http/1.1",
-						"acme-tls/1",
-					},
-				},
 			},
 		},
 		{
@@ -205,13 +199,7 @@ func Test_mergeConfiguration_tlsOptions(t *testing.T) {
 				},
 			},
 			expected: map[string]tls.Options{
-				"default": {
+				"default": tls.DefaultTLSOptions,
-					ALPNProtocols: []string{
-						"h2",
-						"http/1.1",
-						"acme-tls/1",
-					},
-				},
 				"foo@provider-1": {
 					MinVersion: "VersionTLS12",
 				},
@@ -240,13 +228,7 @@ func Test_mergeConfiguration_tlsOptions(t *testing.T) {
 				},
 			},
 			expected: map[string]tls.Options{
-				"default": {
+				"default": tls.DefaultTLSOptions,
-					ALPNProtocols: []string{
-						"h2",
-						"http/1.1",
-						"acme-tls/1",
-					},
-				},
 				"foo@provider-1": {
 					MinVersion: "VersionTLS13",
 				},
@@ -352,13 +334,7 @@ func Test_mergeConfiguration_tlsOptions(t *testing.T) {
 				},
 			},
 			expected: map[string]tls.Options{
-				"default": {
+				"default": tls.DefaultTLSOptions,
-					ALPNProtocols: []string{
-						"h2",
-						"http/1.1",
-						"acme-tls/1",
-					},
-				},
 				"foo@provider-1": {
 					MinVersion: "VersionTLS12",
 				},

pkg/server/configurationwatcher_test.go

@@ -95,13 +95,7 @@ func TestNewConfigurationWatcher(t *testing.T) {
 			},
 			TLS: &dynamic.TLSConfiguration{
 				Options: map[string]tls.Options{
-					"default": {
+					"default": tls.DefaultTLSOptions,
-						ALPNProtocols: []string{
-							"h2",
-							"http/1.1",
-							"acme-tls/1",
-						},
-					},
 				},
 				Stores: map[string]tls.Store{},
 			},
@@ -238,13 +232,7 @@ func TestIgnoreTransientConfiguration(t *testing.T) {
 		},
 		TLS: &dynamic.TLSConfiguration{
 			Options: map[string]tls.Options{
-				"default": {
+				"default": tls.DefaultTLSOptions,
-					ALPNProtocols: []string{
-						"h2",
-						"http/1.1",
-						"acme-tls/1",
-					},
-				},
 			},
 			Stores: map[string]tls.Store{},
 		},
@@ -408,13 +396,7 @@ func TestListenProvidersDoesNotSkipFlappingConfiguration(t *testing.T) {
 		},
 		TLS: &dynamic.TLSConfiguration{
 			Options: map[string]tls.Options{
-				"default": {
+				"default": tls.DefaultTLSOptions,
-					ALPNProtocols: []string{
-						"h2",
-						"http/1.1",
-						"acme-tls/1",
-					},
-				},
 			},
 			Stores: map[string]tls.Store{},
 		},
@@ -503,13 +485,7 @@ func TestListenProvidersIgnoreSameConfig(t *testing.T) {
 		},
 		TLS: &dynamic.TLSConfiguration{
 			Options: map[string]tls.Options{
-				"default": {
+				"default": tls.DefaultTLSOptions,
-					ALPNProtocols: []string{
-						"h2",
-						"http/1.1",
-						"acme-tls/1",
-					},
-				},
 			},
 			Stores: map[string]tls.Store{},
 		},
@@ -642,13 +618,7 @@ func TestListenProvidersIgnoreIntermediateConfigs(t *testing.T) {
 		},
 		TLS: &dynamic.TLSConfiguration{
 			Options: map[string]tls.Options{
-				"default": {
+				"default": tls.DefaultTLSOptions,
-					ALPNProtocols: []string{
-						"h2",
-						"http/1.1",
-						"acme-tls/1",
-					},
-				},
 			},
 			Stores: map[string]tls.Store{},
 		},
@@ -710,13 +680,7 @@ func TestListenProvidersPublishesConfigForEachProvider(t *testing.T) {
 		},
 		TLS: &dynamic.TLSConfiguration{
 			Options: map[string]tls.Options{
-				"default": {
+				"default": tls.DefaultTLSOptions,
-					ALPNProtocols: []string{
-						"h2",
-						"http/1.1",
-						"acme-tls/1",
-					},
-				},
 			},
 			Stores: map[string]tls.Store{},
 		},

pkg/tls/tlsmanager.go

@@ -27,6 +27,17 @@ const (
 var DefaultTLSOptions = Options{
 	// ensure http2 enabled
 	ALPNProtocols: []string{"h2", "http/1.1", tlsalpn01.ACMETLS1Protocol},
+	MinVersion:    "VersionTLS12",
+	CipherSuites:  getCipherSuites(),
+}
+
+func getCipherSuites() []string {
+	gsc := tls.CipherSuites()
+	ciphers := make([]string, len(gsc))
+	for idx, cs := range gsc {
+		ciphers[idx] = cs.Name
+	}
+	return ciphers
 }
 
 // Manager is the TLS option/store/configuration factory.

pkg/tls/tlsmanager_test.go

@@ -347,3 +347,31 @@ func TestClientAuth(t *testing.T) {
 		})
 	}
 }
+
+func TestManager_Get_DefaultValues(t *testing.T) {
+	tlsManager := NewManager()
+
+	// Ensures we won't break things for Traefik users when updating Go
+	config, _ := tlsManager.Get("default", "default")
+	assert.Equal(t, config.MinVersion, uint16(tls.VersionTLS12))
+	assert.Equal(t, config.NextProtos, []string{"h2", "http/1.1", "acme-tls/1"})
+	assert.Equal(t, config.CipherSuites, []uint16{
+		tls.TLS_RSA_WITH_AES_128_CBC_SHA,
+		tls.TLS_RSA_WITH_AES_256_CBC_SHA,
+		tls.TLS_RSA_WITH_AES_128_GCM_SHA256,
+		tls.TLS_RSA_WITH_AES_256_GCM_SHA384,
+		tls.TLS_AES_128_GCM_SHA256,
+		tls.TLS_AES_256_GCM_SHA384,
+		tls.TLS_CHACHA20_POLY1305_SHA256,
+		tls.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
+		tls.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
+		tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
+		tls.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
+		tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
+		tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
+		tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
+		tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
+		tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,
+		tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,
+	})
+}