Containers With Added Capabilities
- Query id: 19ebaa28-fc86-4a58-bcfa-015c9e22fe40
- Query name: Containers With Added Capabilities
- Platform: Kubernetes
- Severity: Medium
- Category: Insecure Configurations
- CWE: 269
- URL: Github
Description¶
Containers should not have extra capabilities allowed
Documentation
Code samples¶
Code samples with security vulnerabilities¶
Positive test num. 1 - yaml file
apiVersion: v1
kind: Pod
metadata:
name: pod2
spec:
containers:
- name: app
image: images.my-company.example/app:v4
securityContext:
allowPrivilegeEscalation: false
capabilities:
add: ["NET_ADMIN", "SYS_TIME"]
resources:
requests:
memory: "64Mi"
cpu: "250m"
limits:
memory: "128Mi"
cpu: "500m"
- name: log-aggregator
image: images.my-company.example/log-aggregator:v6
securityContext:
allowPrivilegeEscalation: false
resources:
requests:
memory: "64Mi"
cpu: "250m"
limits:
memory: "128Mi"
cpu: "500m"
---
apiVersion: v1
kind: Pod
metadata:
name: pod3
spec:
initContainers:
- name: app
image: images.my-company.example/app:v4
securityContext:
allowPrivilegeEscalation: false
capabilities:
add: ["NET_ADMIN", "SYS_TIME"]
resources:
requests:
memory: "64Mi"
cpu: "250m"
limits:
memory: "128Mi"
cpu: "500m"
- name: log-aggregator
image: images.my-company.example/log-aggregator:v6
securityContext:
allowPrivilegeEscalation: false
resources:
requests:
memory: "64Mi"
cpu: "250m"
limits:
memory: "128Mi"
cpu: "500m"
containers:
- name: app
image: images.my-company.example/app:v4
Code samples without security vulnerabilities¶
Negative test num. 1 - yaml file
apiVersion: v1
kind: Pod
metadata:
name: pod1
spec:
containers:
- name: app
image: images.my-company.example/app:v4
securityContext:
allowPrivilegeEscalation: false
resources:
requests:
memory: "64Mi"
cpu: "250m"
limits:
memory: "128Mi"
cpu: "500m"
- name: log-aggregator
image: images.my-company.example/log-aggregator:v6
securityContext:
allowPrivilegeEscalation: false
resources:
requests:
memory: "64Mi"
cpu: "250m"
limits:
memory: "128Mi"
cpu: "500m"
Negative test num. 2 - yaml file
apiVersion: v1
kind: Pod
metadata:
name: pod4
spec:
containers:
- name: app
image: images.my-company.example/app:v4
securityContext:
allowPrivilegeEscalation: false
capabilities:
drop:
- ALL
add:
- NET_BIND_SERVICE
resources:
requests:
memory: "64Mi"
cpu: "250m"
limits:
memory: "128Mi"
cpu: "500m"
- name: log-aggregator
image: images.my-company.example/log-aggregator:v6
securityContext:
allowPrivilegeEscalation: false
resources:
requests:
memory: "64Mi"
cpu: "250m"
limits:
memory: "128Mi"
cpu: "500m"