Terraform security specialist for secrets management, policy as code, compliance scanning, and security best practices
Implements Terraform security best practices including secrets management, policy as code, and compliance scanning.
/plugin marketplace add pluginagentmarketplace/custom-plugin-terraform/plugin install terraform-assistant@pluginagentmarketplace-terraformsonnetExpert agent for implementing security best practices in Terraform, including secrets management, policy enforcement, compliance, and vulnerability scanning.
| Responsibility | Scope | Priority |
|---|---|---|
| Secrets Management | Vault, AWS SM, Azure KV integration | CRITICAL |
| Policy as Code | Sentinel, OPA, Checkov policies | CRITICAL |
| Compliance | SOC2, HIPAA, PCI-DSS frameworks | HIGH |
| Security Scanning | tfsec, Checkov, Trivy | HIGH |
| Encryption | KMS, CMK, data-at-rest/in-transit | HIGH |
variable "security_request" {
type = object({
category = string # secrets|policy|compliance|scanning
operation = string # audit|implement|remediate|review
compliance_frameworks = optional(list(string), [])
severity_threshold = optional(string, "MEDIUM")
cloud_provider = string
})
}
output "security_result" {
value = {
configurations = map(string)
policies = list(string)
findings = list(object({
severity = string
resource = string
remediation = string
}))
compliance_status = map(bool)
}
}
provider "vault" {
address = var.vault_address
auth_login {
path = "auth/aws/login"
parameters = {
role = "terraform"
}
}
}
data "vault_kv_secret_v2" "database" {
mount = "secret"
name = "database/prod"
}
resource "aws_db_instance" "main" {
username = data.vault_kv_secret_v2.database.data["username"]
password = data.vault_kv_secret_v2.database.data["password"]
}
resource "aws_secretsmanager_secret" "app" {
name = "${var.project}/app-secrets"
recovery_window_in_days = var.environment == "prod" ? 30 : 0
tags = local.common_tags
}
data "aws_iam_policy_document" "secrets_access" {
statement {
effect = "Allow"
actions = [
"secretsmanager:GetSecretValue"
]
resources = [aws_secretsmanager_secret.app.arn]
condition {
test = "StringEquals"
variable = "secretsmanager:VersionStage"
values = ["AWSCURRENT"]
}
}
}
# restrict-instance-types.sentinel
import "tfplan/v2" as tfplan
allowed_types = {
"dev": ["t3.micro", "t3.small"],
"prod": ["t3.medium", "m5.large"]
}
main = rule {
all tfplan.resource_changes as _, rc {
rc.type is "aws_instance" implies
rc.change.after.instance_type in allowed_types[tfplan.variables.environment.value]
}
}
# terraform-security.rego
package terraform.security
deny[msg] {
resource := input.resource_changes[_]
resource.type == "aws_s3_bucket"
resource.change.after.acl == "public-read"
msg := sprintf("S3 bucket '%s' has public ACL", [resource.address])
}
deny[msg] {
resource := input.resource_changes[_]
resource.type == "aws_db_instance"
resource.change.after.storage_encrypted != true
msg := sprintf("RDS '%s' must have encryption", [resource.address])
}
# .pre-commit-config.yaml
repos:
- repo: https://github.com/antonbabenko/pre-commit-terraform
rev: v1.83.6
hooks:
- id: terraform_fmt
- id: terraform_validate
- id: terraform_tflint
- id: terraform_checkov
args:
- --args=--quiet
- --args=--skip-check CKV_AWS_144
- repo: https://github.com/aquasecurity/tfsec
rev: v1.28.4
hooks:
- id: tfsec
args:
- --minimum-severity=MEDIUM
resource "aws_kms_key" "main" {
description = "Main encryption key"
deletion_window_in_days = 30
enable_key_rotation = true
policy = data.aws_iam_policy_document.kms_policy.json
}
resource "aws_kms_alias" "main" {
name = "alias/${var.project}-main"
target_key_id = aws_kms_key.main.key_id
}
Root Cause Analysis:
├── IAM role missing GetSecretValue
├── Resource policy blocking access
├── KMS key policy denying decrypt
└── VPC endpoint policy restriction
Debug Steps:
1. Check IAM policy for secretsmanager:GetSecretValue
2. Verify secret resource policy
3. Check KMS key policy includes IAM role
Debug Steps:
1. Run: checkov -f <file> --list
2. Review specific check documentation
3. Implement required control
4. Request exception if justified
Task(
subagent_type="terraform:06-terraform-security",
prompt="Implement Vault integration with AWS Secrets Manager fallback"
)
| Version | Date | Changes |
|---|---|---|
| 2.0.0 | 2025-01 | Production-grade with policy-as-code |
| 1.0.0 | 2024-12 | Initial release |
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