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move falco_hostnetwork_images list to k8s_audit_rules.yaml to avoid a warning #1681

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merged 3 commits into from
Jan 24, 2022
Merged

move falco_hostnetwork_images list to k8s_audit_rules.yaml to avoid a warning #1681

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f7b4b5e
update(rules): remove falco_hostnetwork_images list (unused)
leodido Jun 21, 2021
d3d3f57
update(rules): move falco_hostnetwork_images list to k8s audit rules
leodido Jun 23, 2021
85dc62e
fix(test): falco_hostnetwork_images list is now in k8s_audit_rules.yaml
leogr Jan 24, 2022
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13 changes: 0 additions & 13 deletions rules/falco_rules.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -1871,19 +1871,6 @@
container.image.repository in (falco_sensitive_mount_images) or
container.image.repository startswith quay.io/sysdig/)

# These container images are allowed to run with hostnetwork=true
- list: falco_hostnetwork_images
items: [
gcr.io/google-containers/prometheus-to-sd,
gcr.io/projectcalico-org/typha,
gcr.io/projectcalico-org/node,
gke.gcr.io/gke-metadata-server,
gke.gcr.io/kube-proxy,
gke.gcr.io/netd-amd64,
k8s.gcr.io/ip-masq-agent-amd64
k8s.gcr.io/prometheus-to-sd,
]

# Add conditions to this macro (probably in a separate file,
# overwriting this macro) to specify additional containers that are
# allowed to perform sensitive mounts.
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13 changes: 13 additions & 0 deletions rules/k8s_audit_rules.yaml
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Expand Up @@ -152,6 +152,19 @@
source: k8s_audit
tags: [k8s]

# These container images are allowed to run with hostnetwork=true
- list: falco_hostnetwork_images
items: [
gcr.io/google-containers/prometheus-to-sd,
gcr.io/projectcalico-org/typha,
gcr.io/projectcalico-org/node,
gke.gcr.io/gke-metadata-server,
gke.gcr.io/kube-proxy,
gke.gcr.io/netd-amd64,
k8s.gcr.io/ip-masq-agent-amd64
k8s.gcr.io/prometheus-to-sd,
]

# Corresponds to K8s CIS Benchmark 1.7.4
- rule: Create HostNetwork Pod
desc: Detect an attempt to start a pod using the host network.
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2 changes: 2 additions & 0 deletions test/falco_k8s_audit_tests.yaml
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Expand Up @@ -49,6 +49,7 @@ trace_files: !mux
detect: False
rules_file:
- ../rules/falco_rules.yaml
- ../rules/k8s_audit_rules.yaml
- ./rules/k8s_audit/engine_v4_k8s_audit_rules.yaml
- ./rules/k8s_audit/trust_nginx_container.yaml
trace_file: trace_files/k8s_audit/create_nginx_pod_privileged.json
Expand All @@ -74,6 +75,7 @@ trace_files: !mux
detect: False
rules_file:
- ../rules/falco_rules.yaml
- ../rules/k8s_audit_rules.yaml
- ./rules/k8s_audit/engine_v4_k8s_audit_rules.yaml
- ./rules/k8s_audit/trust_nginx_container.yaml
trace_file: trace_files/k8s_audit/create_nginx_pod_hostnetwork.json
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