[wildfly#266] Updated Pod security standards

* Add a default Security Context if the user does not specify one from the WildFlyServerSpec. * In the CSV, updates the operator's own deployment to comply with the security standards. This fixes wildfly#266 Signed-off-by: Jeff Mesnil <[email protected]>
jmesnil · Mar 14, 2023 · 32ccffe · 32ccffe
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commit 32ccffe
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Showing 6 changed files with 42 additions and 3 deletions.
diff --git a/api/v1alpha1/wildflyserver_types.go b/api/v1alpha1/wildflyserver_types.go
@@ -67,7 +67,9 @@ type WildFlyServerSpec struct {
 	// ResourcesSpec defines the resources used by the WildFlyServer, ie CPU and memory, use limits and requests.
 	// More info: https://pkg.go.dev/k8s.io/[email protected]/core/v1#ResourceRequirements
 	Resources *corev1.ResourceRequirements `json:"resources,omitempty"`
-	// SecurityContext
+	// SecurityContext defines the security capabilities required to run the application.
+	// If omitted, a default security context is created which runs with a non-root "jboss (185)" user without priviledges
+	// escalation and all security capabilities dropped.
 	SecurityContext *corev1.SecurityContext `json:"securityContext,omitempty"`
 }
 

diff --git a/api/v1alpha1/zz_generated.openapi.go b/api/v1alpha1/zz_generated.openapi.go
diff --git a/bundle/manifests/wildfly-operator.clusterserviceversion.yaml b/bundle/manifests/wildfly-operator.clusterserviceversion.yaml
@@ -95,7 +95,16 @@ spec:
                   requests:
                     cpu: 100m
                     memory: 20Mi
+                securityContext:
+                  allowPrivilegeEscalation: false
+                  runAsNonRoot: true
+                  capabilities:
+                    drop:
+                      - ALL
               serviceAccountName: wildfly-operator
+              securityContext:
+                seccompProfile:
+                  type: RuntimeDefault
               terminationGracePeriodSeconds: 10
       permissions:
       - rules:

diff --git a/go.sum b/go.sum
@@ -696,6 +696,7 @@ golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzB
 golang.org/x/mod v0.1.1-0.20191107180719-034126e5016b/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
 golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
+golang.org/x/mod v0.4.2 h1:Gz96sIWK3OalVv/I/qNygP42zyoKp3xptRVCWRFEBvo=
 golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
 golang.org/x/net v0.0.0-20170114055629-f2499483f923/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -1089,6 +1090,7 @@ k8s.io/gengo v0.0.0-20200114144118-36b2048a9120/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8
 k8s.io/gengo v0.0.0-20200413195148-3a45101e95ac/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=
 k8s.io/gengo v0.0.0-20200428234225-8167cfdcfc14/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=
 k8s.io/gengo v0.0.0-20201113003025-83324d819ded/go.mod h1:FiNAH4ZV3gBg2Kwh89tzAEV2be7d5xI0vBa/VySYy3E=
+k8s.io/gengo v0.0.0-20210813121822-485abfe95c7c h1:GohjlNKauSai7gN4wsJkeZ3WAJx4Sh+oT/b5IYn5suA=
 k8s.io/gengo v0.0.0-20210813121822-485abfe95c7c/go.mod h1:FiNAH4ZV3gBg2Kwh89tzAEV2be7d5xI0vBa/VySYy3E=
 k8s.io/klog v0.0.0-20181102134211-b9b56d5dfc92/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk=
 k8s.io/klog v0.3.0/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk=

diff --git a/main.go b/main.go
@@ -74,7 +74,7 @@ func main() {
 	flag.BoolVar(&enableLeaderElection, "leader-elect", false,
 		"Enable leader election for controller manager. Enabling this will ensure there is only one active controller manager.")
 	opts := zap.Options{
-	//	Development: true,      // Commented out to use default production options
+		//	Development: true,      // Commented out to use default production options
 	}
 	opts.BindFlags(flag.CommandLine)
 	flag.Parse()

diff --git a/pkg/resources/statefulsets/statefulset.go b/pkg/resources/statefulsets/statefulset.go
@@ -56,6 +56,15 @@ func NewStatefulSet(w *wildflyv1alpha1.WildFlyServer, labels map[string]string,
 		wildflyImageTypeAnnotation = resources.ImageTypeBootable
 	}
 
+	allowPrivilegeEscalation := new(bool)
+	*allowPrivilegeEscalation = false
+
+	runAsNonRoot := new(bool)
+	*runAsNonRoot = true
+
+	jbossUser := new(int64)
+	*jbossUser = 185
+
 	statefulSet := &appsv1.StatefulSet{
 		TypeMeta: metav1.TypeMeta{
 			APIVersion: "apps/v1",
@@ -84,6 +93,11 @@ func NewStatefulSet(w *wildflyv1alpha1.WildFlyServer, labels map[string]string,
 					},
 				},
 				Spec: corev1.PodSpec{
+					SecurityContext: &corev1.PodSecurityContext{
+						SeccompProfile: &corev1.SeccompProfile{
+							Type: corev1.SeccompProfileTypeRuntimeDefault,
+						},
+					},
 					Containers: []corev1.Container{{
 						Name:  w.Name,
 						Image: applicationImage,
@@ -119,6 +133,18 @@ func NewStatefulSet(w *wildflyv1alpha1.WildFlyServer, labels map[string]string,
 	// if the user specified the securityContext directive propagate it to the container (required for HPA).
 	if w.Spec.SecurityContext != nil {
 		statefulSet.Spec.Template.Spec.Containers[0].SecurityContext = *&w.Spec.SecurityContext
+	} else {
+		// otherwise, use a default security context without any security priviledges
+		statefulSet.Spec.Template.Spec.Containers[0].SecurityContext = &corev1.SecurityContext{
+			AllowPrivilegeEscalation: allowPrivilegeEscalation,
+			Capabilities: &corev1.Capabilities{
+				Drop: []corev1.Capability{
+					"ALL",
+				},
+			},
+			RunAsNonRoot: runAsNonRoot,
+			RunAsUser:    jbossUser,
+		}
 	}
 
 	if len(w.Spec.EnvFrom) > 0 {