Audit Log Maxbackup Not Properly Set
- Query id: 768aab52-2504-4a2f-a3e3-329d5a679848
- Query name: Audit Log Maxbackup Not Properly Set
- Platform: Kubernetes
- Severity: Low
- Category: Observability
- CWE: 778
- URL: Github
Description¶
When using kube-apiserver command, the '--audit-log-maxbackup' flag should be defined and set to 10 or more files
Documentation
Code samples¶
Code samples with security vulnerabilities¶
Positive test num. 1 - yaml file
apiVersion: v1
kind: Pod
metadata:
name: command-demo
labels:
purpose: demonstrate-command
spec:
containers:
- name: command-demo-container
image: gcr.io/google_containers/kube-apiserver-amd64:v1.6.0
command: ["kube-apiserver"]
args: ["--audit-log-maxbackup=5"]
restartPolicy: OnFailure
Positive test num. 2 - yaml file
apiVersion: v1
kind: Pod
metadata:
name: command-demo
labels:
purpose: demonstrate-command
spec:
containers:
- name: command-demo-container
image: gcr.io/google_containers/kube-apiserver-amd64:v1.6.0
command: ["kube-apiserver"]
args: []
restartPolicy: OnFailure
Positive test num. 3 - yaml file
apiVersion: serving.knative.dev/v1
kind: Service
metadata:
name: dummy
namespace: knative-sequence
spec:
template:
spec:
containers:
- name: command-demo-container
image: gcr.io/google_containers/kube-apiserver-amd64:v1.6.0
command: ["kube-apiserver"]
args: ["--audit-log-maxbackup=5"]
restartPolicy: OnFailure
---
apiVersion: serving.knative.dev/v1
kind: Configuration
metadata:
name: dummy-config
namespace: knative-sequence
spec:
template:
spec:
containers:
- name: command-demo-container
image: gcr.io/google_containers/kube-apiserver-amd64:v1.6.0
command: ["kube-apiserver"]
args: ["--audit-log-maxbackup=5"]
restartPolicy: OnFailure
---
apiVersion: serving.knative.dev/v1
kind: Revision
metadata:
name: dummy-rev
namespace: knative-sequence
spec:
containers:
- name: command-demo-container
image: gcr.io/google_containers/kube-apiserver-amd64:v1.6.0
command: ["kube-apiserver"]
args: ["--audit-log-maxbackup=5"]
restartPolicy: OnFailure
---
apiVersion: sources.knative.dev/v1
kind: ContainerSource
metadata:
name: dummy-cs
namespace: knative-sequence
spec:
template:
spec:
containers:
- name: command-demo-container
image: gcr.io/google_containers/kube-apiserver-amd64:v1.6.0
command: ["kube-apiserver"]
args: ["--audit-log-maxbackup=5"]
restartPolicy: OnFailure
Code samples without security vulnerabilities¶
Negative test num. 1 - yaml file
apiVersion: v1
kind: Pod
metadata:
name: command-demo
labels:
purpose: demonstrate-command
spec:
containers:
- name: command-demo-container
image: gcr.io/google_containers/kube-apiserver-amd64:v1.6.0
command: ["kube-apiserver"]
args: ["--audit-log-maxbackup=10"]
restartPolicy: OnFailure
Negative test num. 2 - yaml file
apiVersion: v1
kind: Pod
metadata:
name: command-demo
labels:
purpose: demonstrate-command
spec:
containers:
- name: command-demo-container
image: gcr.io/google_containers/kube-apiserver-amd64:v1.6.0
command: ["kube-apiserver","--audit-log-maxbackup=15"]
args: []
restartPolicy: OnFailure