Config Scan Agent Skill

/config-scan                      # Scan all config files
/config-scan --docker             # Docker files only
/config-scan --k8s                # Kubernetes manifests
/config-scan --terraform          # Terraform files
/config-scan --env                # Environment files

# Committed .env files
git ls-files | grep -E '\.env$|\.env\.'

# Secrets in env files
(PASSWORD|SECRET|KEY|TOKEN|CREDENTIAL)=.+

# Debug flags
DEBUG=(true|1|yes)
NODE_ENV=development

# Running as root (no USER directive)
FROM.*\n(?!.*USER)

# Copying secrets
COPY.*\.(pem|key|crt|env)
COPY.*secret
COPY.*password

# Unpinned images
FROM\s+\w+:latest
FROM\s+\w+\s*$

# Dangerous capabilities
--privileged
--cap-add

# Privileged mode
privileged: true

# All capabilities
cap_add:
  - ALL

# Host network
network_mode: host

# Sensitive mounts
volumes:
  - /:/host
  - /var/run/docker.sock

# Privileged containers
securityContext:
  privileged: true

# Running as root
securityContext:
  runAsUser: 0
runAsNonRoot: false

# Host access
hostNetwork: true
hostPID: true
hostIPC: true

# Dangerous volume mounts
volumes:
  - hostPath:
      path: /

# Missing limits
# (absence of resources.limits)

# Wildcard RBAC
rules:
  - apiGroups: ["*"]
    resources: ["*"]
    verbs: ["*"]

# Public S3
acl = "public-read"
acl = "public-read-write"

# Overly permissive IAM
"Action": "*"
"Resource": "*"
"Principal": "*"

# Open security groups
cidr_blocks = ["0.0.0.0/0"]
ingress {
  from_port = 0
  to_port   = 65535

# Missing encryption
encrypted = false
# (or absence of encryption settings)

# Hardcoded secrets
password = "..."
secret_key = "..."

// Debug mode
debug: true,
DEBUG: true,
NODE_ENV: 'development'

// Verbose errors
showStackTrace: true
detailedErrors: true

// CORS
origin: '*'
origin: true
Access-Control-Allow-Origin: *

// Session security
secure: false  // cookies
httpOnly: false
sameSite: 'none'

CONFIG SCAN RESULTS
===================

Files scanned: 23
Issues found: 15

CRITICAL (2)
------------
[!] Dockerfile:1 - Running as root
    No USER directive found
    Fix: Add "USER node" or similar non-root user

[!] terraform/s3.tf:12 - Public S3 bucket
    acl = "public-read"
    Fix: Remove public ACL, use bucket policies

HIGH (5)
--------
[H] docker-compose.yml:15 - Privileged container
    privileged: true
    Fix: Remove privileged flag, use specific capabilities

[H] k8s/deployment.yaml:34 - Missing resource limits
    No CPU/memory limits defined
    Fix: Add resources.limits section

...

MEDIUM (8)
----------
...

# Ignore specific files
files:
  - "docker-compose.dev.yml"
  - "terraform/modules/test/**"

# Ignore specific rules
rules:
  - id: "docker-root-user"
    files: ["Dockerfile.dev"]
    reason: "Development only"

  - id: "k8s-no-limits"
    reason: "Handled by LimitRange"

# .config-scan.yaml
profile: production  # or: development, strict

# Custom thresholds
thresholds:
  fail_on: high
  warn_on: medium

# Specific scanners
scanners:
  docker: true
  kubernetes: true
  terraform: true
  env_files: true
  app_config: true

# Before
FROM node:18

# After
FROM node:18
RUN groupadd -r app && useradd -r -g app app
USER app

# Before
containers:
  - name: app
    image: myapp

# After
containers:
  - name: app
    image: myapp
    securityContext:
      runAsNonRoot: true
      runAsUser: 1000
      readOnlyRootFilesystem: true
      allowPrivilegeEscalation: false

# Before
resource "aws_s3_bucket" "data" {
  acl = "public-read"
}

# After
resource "aws_s3_bucket" "data" {
  # No ACL (private by default)
}

resource "aws_s3_bucket_public_access_block" "data" {
  bucket = aws_s3_bucket.data.id
  block_public_acls       = true
  block_public_policy     = true
  ignore_public_acls      = true
  restrict_public_buckets = true
}

# GitHub Actions
- name: Config Security Scan
  run: |
    /config-scan --fail-on high

- name: Docker Scan
  run: |
    /config-scan --docker --fail-on critical