Policy sets insecure default seccomp profile Affecting Pod Security Policy service in Kubernetes
Severity Framework
CCSS (Common Configuration Scoring System) is a set of measures used to determine the severity of the rule.
Snyk CCSS
Rule category
Each rule is associated with a high-level category. For example IAM, Container, Monitoring, Logging, Network, etc.
Containers/ Best Practices
Is your environment affected by this misconfiguration?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsFrameworks
CIS-ControlsCIS-Kubernetes
- Snyk IDSNYK-CC-00640
- creditSnyk Research Team
Description
Default seccomp profile is set to Unconfined. Containers will run with seccomp disabled.
How to fix?
"Set spec.securityContext.seccompProfile.type to RuntimeDefault.
Example configuration
apiVersion: v1
kind: Container
metadata:
name: default-container
labels:
app: default-container
spec:
securityContext:
seccompProfile:
type: RuntimeDefault
containers:
- name: test-container
image: hashicorp/http-echo:1.0
args:
- "-text=just made some more syscalls!"
securityContext:
allowPrivilegeEscalation: false
Set seccomp.security.alpha.kubernetes.io/defaultProfileName annotation to runtime/default.
Example Configuration
resource "kubernetes_pod_security_policy" "allowed" {
metadata {
name = "terraform-example640"
annotations = {
"seccomp.security.alpha.kubernetes.io/defaultProfileName" = "runtime/default"
}
}
spec {
privileged = false
allow_privilege_escalation = false
run_as_user {
rule = "MustRunAsNonRoot"
}
se_linux {
rule = "RunAsAny"
}
supplemental_groups {
rule = "MustRunAs"
range {
min = 1
max = 65535
}
}
fs_group {
rule = "MustRunAs"
range {
min = 1
max = 65535
}
}
read_only_root_filesystem = true
}
}