add admin,edit,view roles

plugin/pkg/auth/authorizer/rbac/bootstrappolicy/controller_policy.go

@@ -58,6 +58,7 @@ func init() {
 	addControllerRole(rbac.ClusterRole{
 		ObjectMeta: api.ObjectMeta{Name: saRolePrefix + "replication-controller"},
 		Rules: []rbac.PolicyRule{
+			// 1.0 controllers needed get, update, so without these old controllers break on new servers
 			rbac.NewRule("get", "list", "watch", "update").Groups(legacyGroup).Resources("replicationcontrollers").RuleOrDie(),
 			rbac.NewRule("update").Groups(legacyGroup).Resources("replicationcontrollers/status").RuleOrDie(),
 			rbac.NewRule("list", "watch", "create", "delete").Groups(legacyGroup).Resources("pods").RuleOrDie(),

plugin/pkg/auth/authorizer/rbac/bootstrappolicy/policy.go

@@ -23,10 +23,22 @@ import (
 )
 
 var (
-	readWrite = []string{"get", "list", "watch", "create", "update", "patch", "delete", "deletecollection"}
-	read      = []string{"get", "list", "watch"}
+	ReadWrite = []string{"get", "list", "watch", "create", "update", "patch", "delete", "deletecollection"}
+	Read      = []string{"get", "list", "watch"}
+)
 
+const (
 	legacyGroup         = ""
+	appsGroup           = "apps"
+	authenticationGroup = "authentication.k8s.io"
+	authorizationGroup  = "authorization.k8s.io"
+	autoscalingGroup    = "autoscaling"
+	batchGroup          = "batch"
+	certificatesGroup   = "certificates.k8s.io"
+	extensionsGroup     = "extensions"
+	policyGroup         = "policy"
+	rbacGroup           = "rbac.authorization.k8s.io"
+	storageGroup        = "storage.k8s.io"
 )
 
 // ClusterRoles returns the cluster roles to bootstrap an API server with
@@ -47,6 +59,92 @@ func ClusterRoles() []rbac.ClusterRole {
 				rbac.NewRule("get").URLs("/version", "/api", "/api/*", "/apis", "/apis/*").RuleOrDie(),
 			},
 		},
+		{
+			// a role which provides minimal resource access to allow a "normal" user to learn information about themselves
+			ObjectMeta: api.ObjectMeta{Name: "system:basic-user"},
+			Rules: []rbac.PolicyRule{
+				// TODO add future selfsubjectrulesreview, project request APIs, project listing APIs
+				rbac.NewRule("create").Groups(authorizationGroup).Resources("selfsubjectaccessreviews").RuleOrDie(),
+			},
+		},
+
+		{
+			// a role for a namespace level admin.  It is `edit` plus the power to grant permissions to other users.
+			ObjectMeta: api.ObjectMeta{Name: "admin"},
+			Rules: []rbac.PolicyRule{
+				rbac.NewRule(ReadWrite...).Groups(legacyGroup).Resources("pods", "pods/attach", "pods/proxy", "pods/exec", "pods/portforward").RuleOrDie(),
+				rbac.NewRule(ReadWrite...).Groups(legacyGroup).Resources("replicationcontrollers", "replicationcontrollers/scale", "serviceaccounts",
+					"services", "services/proxy", "endpoints", "persistentvolumeclaims", "configmaps", "secrets").RuleOrDie(),
+				rbac.NewRule(Read...).Groups(legacyGroup).Resources("limitranges", "resourcequotas", "bindings", "events",
+					"pods/status", "resourcequotas/status", "namespaces/status", "replicationcontrollers/status", "pods/log").RuleOrDie(),
+				// read access to namespaces at the namespace scope means you can read *this* namespace.  This can be used as an
+				// indicator of which namespaces you have access to.
+				rbac.NewRule(Read...).Groups(legacyGroup).Resources("namespaces").RuleOrDie(),
+				rbac.NewRule("impersonate").Groups(legacyGroup).Resources("serviceaccounts").RuleOrDie(),
+
+				rbac.NewRule(ReadWrite...).Groups(appsGroup).Resources("petsets").RuleOrDie(),
+
+				rbac.NewRule(ReadWrite...).Groups(autoscalingGroup).Resources("horizontalpodautoscalers").RuleOrDie(),
+
+				rbac.NewRule(ReadWrite...).Groups(batchGroup).Resources("jobs", "scheduledjobs").RuleOrDie(),
+
+				rbac.NewRule(ReadWrite...).Groups(extensionsGroup).Resources("jobs", "daemonsets", "horizontalpodautoscalers",
+					"replicationcontrollers/scale", "replicasets", "replicasets/scale", "deployments", "deployments/scale").RuleOrDie(),
+
+				// additional admin powers
+				rbac.NewRule("create").Groups(authorizationGroup).Resources("localsubjectaccessreviews").RuleOrDie(),
+				rbac.NewRule(ReadWrite...).Groups(rbacGroup).Resources("roles", "rolebindings").RuleOrDie(),
+			},
+		},
+		{
+			// a role for a namespace level editor.  It grants access to all user level actions in a namespace.
+			// It does not grant powers for "privileged" resources which are domain of the system: `/status`
+			// subresources or `quota`/`limits` which are used to control namespaces
+			ObjectMeta: api.ObjectMeta{Name: "edit"},
+			Rules: []rbac.PolicyRule{
+				rbac.NewRule(ReadWrite...).Groups(legacyGroup).Resources("pods", "pods/attach", "pods/proxy", "pods/exec", "pods/portforward").RuleOrDie(),
+				rbac.NewRule(ReadWrite...).Groups(legacyGroup).Resources("replicationcontrollers", "replicationcontrollers/scale", "serviceaccounts",
+					"services", "services/proxy", "endpoints", "persistentvolumeclaims", "configmaps", "secrets").RuleOrDie(),
+				rbac.NewRule(Read...).Groups(legacyGroup).Resources("limitranges", "resourcequotas", "bindings", "events",
+					"pods/status", "resourcequotas/status", "namespaces/status", "replicationcontrollers/status", "pods/log").RuleOrDie(),
+				// read access to namespaces at the namespace scope means you can read *this* namespace.  This can be used as an
+				// indicator of which namespaces you have access to.
+				rbac.NewRule(Read...).Groups(legacyGroup).Resources("namespaces").RuleOrDie(),
+				rbac.NewRule("impersonate").Groups(legacyGroup).Resources("serviceaccounts").RuleOrDie(),
+
+				rbac.NewRule(ReadWrite...).Groups(appsGroup).Resources("petsets").RuleOrDie(),
+
+				rbac.NewRule(ReadWrite...).Groups(autoscalingGroup).Resources("horizontalpodautoscalers").RuleOrDie(),
+
+				rbac.NewRule(ReadWrite...).Groups(batchGroup).Resources("jobs", "scheduledjobs").RuleOrDie(),
+
+				rbac.NewRule(ReadWrite...).Groups(extensionsGroup).Resources("jobs", "daemonsets", "horizontalpodautoscalers",
+					"replicationcontrollers/scale", "replicasets", "replicasets/scale", "deployments", "deployments/scale").RuleOrDie(),
+			},
+		},
+		{
+			// a role for namespace level viewing.  It grants Read-only access to non-escalating resources in
+			// a namespace.
+			ObjectMeta: api.ObjectMeta{Name: "view"},
+			Rules: []rbac.PolicyRule{
+				rbac.NewRule(Read...).Groups(legacyGroup).Resources("pods", "replicationcontrollers", "replicationcontrollers/scale", "serviceaccounts",
+					"services", "endpoints", "persistentvolumeclaims", "configmaps").RuleOrDie(),
+				rbac.NewRule(Read...).Groups(legacyGroup).Resources("limitranges", "resourcequotas", "bindings", "events",
+					"pods/status", "resourcequotas/status", "namespaces/status", "replicationcontrollers/status", "pods/log").RuleOrDie(),
+				// read access to namespaces at the namespace scope means you can read *this* namespace.  This can be used as an
+				// indicator of which namespaces you have access to.
+				rbac.NewRule(Read...).Groups(legacyGroup).Resources("namespaces").RuleOrDie(),
+
+				rbac.NewRule(Read...).Groups(appsGroup).Resources("petsets").RuleOrDie(),
+
+				rbac.NewRule(Read...).Groups(autoscalingGroup).Resources("horizontalpodautoscalers").RuleOrDie(),
+
+				rbac.NewRule(Read...).Groups(batchGroup).Resources("jobs", "scheduledjobs").RuleOrDie(),
+
+				rbac.NewRule(Read...).Groups(extensionsGroup).Resources("jobs", "daemonsets", "horizontalpodautoscalers",
+					"replicationcontrollers/scale", "replicasets", "replicasets/scale", "deployments", "deployments/scale").RuleOrDie(),
+			},
+		},
 	}
 }
 
@@ -55,5 +153,6 @@ func ClusterRoleBindings() []rbac.ClusterRoleBinding {
 	return []rbac.ClusterRoleBinding{
 		rbac.NewClusterBinding("cluster-admin").Groups(user.SystemPrivilegedGroup).BindingOrDie(),
 		rbac.NewClusterBinding("system:discovery").Groups(user.AllAuthenticated, user.AllUnauthenticated).BindingOrDie(),
+		rbac.NewClusterBinding("system:basic-user").Groups(user.AllAuthenticated, user.AllUnauthenticated).BindingOrDie(),
 	}
 }

plugin/pkg/auth/authorizer/rbac/bootstrappolicy/policy_test.go

+/*
+Copyright 2016 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package bootstrappolicy_test
+
+import (
+	"testing"
+
+	rbac "k8s.io/kubernetes/pkg/apis/rbac"
+	rbacvalidation "k8s.io/kubernetes/pkg/apis/rbac/validation"
+	"k8s.io/kubernetes/pkg/util/sets"
+	"k8s.io/kubernetes/plugin/pkg/auth/authorizer/rbac/bootstrappolicy"
+)
+
+// semanticRoles is a few enumerated roles for which the relationships are well established
+// and we want to maintain symmetric roles
+type semanticRoles struct {
+	admin *rbac.ClusterRole
+	edit  *rbac.ClusterRole
+	view  *rbac.ClusterRole
+}
+
+func getSemanticRoles(roles []rbac.ClusterRole) semanticRoles {
+	ret := semanticRoles{}
+	for i := range roles {
+		role := roles[i]
+		switch role.Name {
+		case "admin":
+			ret.admin = &role
+		case "edit":
+			ret.edit = &role
+		case "view":
+			ret.view = &role
+		}
+	}
+	return ret
+}
+
+// Some roles should always cover others
+func TestCovers(t *testing.T) {
+	semanticRoles := getSemanticRoles(bootstrappolicy.ClusterRoles())
+
+	if covers, miss := rbacvalidation.Covers(semanticRoles.admin.Rules, semanticRoles.edit.Rules); !covers {
+		t.Errorf("failed to cover: %#v", miss)
+	}
+	if covers, miss := rbacvalidation.Covers(semanticRoles.admin.Rules, semanticRoles.view.Rules); !covers {
+		t.Errorf("failed to cover: %#v", miss)
+	}
+	if covers, miss := rbacvalidation.Covers(semanticRoles.edit.Rules, semanticRoles.view.Rules); !covers {
+		t.Errorf("failed to cover: %#v", miss)
+	}
+}
+
+// additionalAdminPowers is the list of powers that we expect to be different than the editor role.
+// one resource per rule to make the "does not already contain" check easy
+var additionalAdminPowers = []rbac.PolicyRule{
+	rbac.NewRule("create").Groups("authorization.k8s.io").Resources("localsubjectaccessreviews").RuleOrDie(),
+	rbac.NewRule(bootstrappolicy.ReadWrite...).Groups("rbac.authorization.k8s.io").Resources("rolebindings").RuleOrDie(),
+	rbac.NewRule(bootstrappolicy.ReadWrite...).Groups("rbac.authorization.k8s.io").Resources("roles").RuleOrDie(),
+}
+
+func TestAdminEditRelationship(t *testing.T) {
+	semanticRoles := getSemanticRoles(bootstrappolicy.ClusterRoles())
+
+	// confirm that the edit role doesn't already have extra powers
+	for _, rule := range additionalAdminPowers {
+		if covers, _ := rbacvalidation.Covers(semanticRoles.edit.Rules, []rbac.PolicyRule{rule}); covers {
+			t.Errorf("edit has extra powers: %#v", rule)
+		}
+	}
+	semanticRoles.edit.Rules = append(semanticRoles.edit.Rules, additionalAdminPowers...)
+
+	// at this point, we should have a two way covers relationship
+	if covers, miss := rbacvalidation.Covers(semanticRoles.admin.Rules, semanticRoles.edit.Rules); !covers {
+		t.Errorf("admin has lost rules for: %#v", miss)
+	}
+	if covers, miss := rbacvalidation.Covers(semanticRoles.edit.Rules, semanticRoles.admin.Rules); !covers {
+		t.Errorf("edit is missing rules for: %#v\nIf these should only be admin powers, add them to the list.  Otherwise, add them to the edit role.", miss)
+	}
+}
+
+// viewEscalatingNamespaceResources is the list of rules that would allow privilege escalation attacks based on
+// ability to view (GET) them
+var viewEscalatingNamespaceResources = []rbac.PolicyRule{
+	rbac.NewRule(bootstrappolicy.Read...).Groups("").Resources("pods/attach").RuleOrDie(),
+	rbac.NewRule(bootstrappolicy.Read...).Groups("").Resources("pods/proxy").RuleOrDie(),
+	rbac.NewRule(bootstrappolicy.Read...).Groups("").Resources("pods/exec").RuleOrDie(),
+	rbac.NewRule(bootstrappolicy.Read...).Groups("").Resources("pods/portforward").RuleOrDie(),
+	rbac.NewRule(bootstrappolicy.Read...).Groups("").Resources("secrets").RuleOrDie(),
+	rbac.NewRule(bootstrappolicy.Read...).Groups("").Resources("services/proxy").RuleOrDie(),
+}
+
+func TestEditViewRelationship(t *testing.T) {
+	readVerbs := sets.NewString(bootstrappolicy.Read...)
+	semanticRoles := getSemanticRoles(bootstrappolicy.ClusterRoles())
+
+	// modify the edit role rules to make then read-only for comparison against view role rules
+	for i := range semanticRoles.edit.Rules {
+		rule := semanticRoles.edit.Rules[i]
+		remainingVerbs := []string{}
+		for _, verb := range rule.Verbs {
+			if readVerbs.Has(verb) {
+				remainingVerbs = append(remainingVerbs, verb)
+			}
+		}
+		rule.Verbs = remainingVerbs
+		semanticRoles.edit.Rules[i] = rule
+	}
+
+	// confirm that the view role doesn't already have extra powers
+	for _, rule := range viewEscalatingNamespaceResources {
+		if covers, _ := rbacvalidation.Covers(semanticRoles.view.Rules, []rbac.PolicyRule{rule}); covers {
+			t.Errorf("view has extra powers: %#v", rule)
+		}
+	}
+	semanticRoles.view.Rules = append(semanticRoles.view.Rules, viewEscalatingNamespaceResources...)
+
+	// at this point, we should have a two way covers relationship
+	if covers, miss := rbacvalidation.Covers(semanticRoles.edit.Rules, semanticRoles.view.Rules); !covers {
+		t.Errorf("edit has lost rules for: %#v", miss)
+	}
+	if covers, miss := rbacvalidation.Covers(semanticRoles.view.Rules, semanticRoles.edit.Rules); !covers {
+		t.Errorf("view is missing rules for: %#v\nIf these are escalating powers, add them to the list.  Otherwise, add them to the view role.", miss)
+	}
+}