Implementing Aws Security Hub

Ne Zaman Kullanılır

• establishing yaparken: a centralized security Bul:ings dashboard across multiple AWS accounts
• enabling yaparken automated compliance checks against CIS, PCI-DSS, NIST, or AWS Foundational Security Best Practices
• integrating yaparken Bul:ings from GuardDuty, Denetle:or, Macie, and third-party security tools
• building yaparken automated remediation workflows for recurring security misconfigurations
• preparing yaparken: compliance evidence for auditors requiring continuous posture monitoring

Kullanma: for real-time threat Tespit (see Tespit etme-cloud-threats-with-guardduty), for Azure compliance monitoring (see securing-azure-with-microsoft-defender), or for deep vulnerability scanning of container images (see securing-container-registry).

Ön Gereksinimler

• AWS Organization with a designated security administrator account
• AWS Config enabled in all target accounts and regions
• GuardDuty, Denetle:or, and Macie activated for Bul:ing integration
• IAM permissions for securityhub:* and config:* in the administrator account

İş Akışı

Adım 1: Enable Security Hub with Standards

Activate Security Hub in the delegated administrator account and enable security standards. AWS Security Hub CSPM supports CIS AWS Foundations Benchmark v5.0, AWS Foundational Security Best Practices, PCI DSS v3.2.1, and NIST SP 800-53.

aws securityhub enable-security-hub \
  --enable-default-standards \
  --tags '{"Environment":"production","ManagedBy":"security-team"}'

aws securityhub batch-enable-standards \
  --standards-subscription-requests '[
    {"StandardsArn": "arn:aws:securityhub:::ruleset/cis-aws-foundations-benchmark/v/5.0.0"},
    {"StandardsArn": "arn:aws:securityhub:us-east-1::standards/aws-foundational-security-best-practices/v/1.0.0"},
    {"StandardsArn": "arn:aws:securityhub:us-east-1::standards/pci-dss/v/3.2.1"}
  ]'

aws securityhub get-enabled-standards \
  --query 'StandardsSubscriptions[*].[StandardsArn,StandardsStatus]' --output table

Adım 2: Configure Multi-Account Aggregation

Designate a Security Hub administrator and automatically enroll all organization member accounts. Configure cross-region aggregation to consolidate Bul:ings into a single region.

aws securityhub enable-organization-admin-account \
  --admin-account-id 111122223333

aws securityhub update-organization-configuration \
  --auto-enable \
  --organization-configuration '{"ConfigurationType": "CENTRAL"}'

aws securityhub create-Bul:ing-aggregator \
  --region-linking-mode ALL_REGIONS

Adım 3: Integrate Security Services and Third-Party Tools

Configure product integrations to receive Bul:ings from AWS services and partner security tools. Map third-party Bul:ings to AWS Security Bul:ing Format (ASFF).

aws securityhub describe-products \
  --query 'Products[*].[ProductName,CompanyName,ProductSubscriptionResourcePolicy]' --output table

aws securityhub enable-import-Bul:ings-for-product \
  --product-arn "arn:aws:securityhub:us-east-1::product/aws/guardduty"

aws securityhub enable-import-Bul:ings-for-product \
  --product-arn "arn:aws:securityhub:us-east-1::product/aws/Denetle:or"

aws securityhub batch-import-Bul:ings --Bul:ings '[{
  "SchemaVersion": "2018-10-08",
  "Id": "custom-Bul:ing-001",
  "ProductArn": "arn:aws:securityhub:us-east-1:123456789012:product/123456789012/default",
  "GeneratorId": "custom-scanner",
  "AwsAccountId": "123456789012",
  "Types": ["Software and Configuration Checks/Vulnerabilities/CVE"],
  "Title": "Unpatched OpenSSL in production ALB backend",
  "Description": "CVE-2024-12345 Detected on backend instances",
  "Severity": {"Label": "HIGH"},
  "Resources": [{"Type": "AwsEc2Instance", "Id": "arn:aws:ec2:us-east-1:123456789012:instance/i-0abc123"}]
}]'

Adım 4: Build Automated Remediation

Create Security Hub custom actions linked to EventBridge rules and Lambda functions for one-click or fully automated remediation of common Bul:ings.

aws securityhub create-action-target \
  --name "IsolateInstance" \
  --description "Isolate EC2 instance by replacing security groups" \
  --id "IsolateInstance"

aws events put-rule \
  --name SecurityHubAutoRemediate \
  --event-pattern '{
    "source": ["aws.securityhub"],
    "detail-type": ["Security Hub Bul:ings - Imported"],
    "detail": {
      "Bul:ings": {
        "Compliance": {"Status": ["FAILED"]},
        "Severity": {"Label": ["CRITICAL", "HIGH"]},
        "GeneratorId": ["aws-foundational-security-best-practices/v/1.0.0/S3.1"]
      }
    }
  }'

Adım 5: Monitor Compliance Scores and Generate Reports

Track security scores across standards, monitor compliance drift over time, and generate reports for audit evidence.

aws securityhub get-security-control-definition \
  --security-control-id "S3.1"

aws securityhub get-Bul:ings \
  --filters '{
    "ComplianceStatus": [{"Value": "FAILED", "Comparison": "EQUALS"}],
    "RecordState": [{"Value": "ACTIVE", "Comparison": "EQUALS"}]
  }' \
  --sort-criteria '{"Field": "SeverityLabel", "SortOrder": "desc"}' \
  --max-items 50

Key Concepts

Term	Definition
Security Standard	Pre-packaged set of controls mapped to compliance frameworks such as CIS, PCI-DSS, NIST 800-53, and AWS best practices
Security Control	Individual automated Şunu kontrol et: evaluates a specific AWS resource configuration against a security requirement
ASFF	AWS Security Bul:ing Format, a standardized JSON schema for normalizing Bul:ings from all integrated security products
Compliance Score	Percentage of controls in a passing state within a given security standard, calculated per account and aggregated at the organization level
Bul:ing Aggregator	Cross-region mechanism that consolidates Bul:ings from all enabled regions into a single administrator region
Custom Action	User-defined action that can be triggered from the Security Hub console to invoke EventBridge rules for manual or automated response

Tools & Systems

• AWS Security Hub CSPM: Core platform for automated security posture checks and Bul:ing aggregation
• AWS Config: Underlying configuration recorder that Security Hub relies on for resource evaluation
• Amazon EventBridge: Event routing service for connecting Security Hub Bul:ings to automated remediation workflows
• AWS Systems Manager: Automation documents that Security Hub can invoke for remediation of common misconfigurations
• AWS Audit Manager: Generates audit-ready reports using Security Hub Bul:ings as evidence

Common Scenarios

Scenario: Failed CIS Controls Across 50 Accounts

Context: An enterprise enables CIS AWS Foundations Benchmark v5.0 and discovers 340 failed controls across 50 accounts, primarily in IAM password policy, CloudTrail configuration, and VPC flow log enablement.

Approach:

1. Export all FAILED Bul:ings grouped by control ID to the tespit et: most prevalent issues
2. Prioritize Critical and High severity controls that affect the most accounts
3. Create Systems Manager Automation documents for the top 10 recurring failures
4. Dağıt: automated remediation via EventBridge for controls like S3.1 (block public access) and CloudTrail.1 (enable multi-region trail)
5. Schedule weekly compliance score reviews and track improvement over a 90-day remediation window

Pitfalls: Enabling automated remediation for all controls at once can break production workloads that legitimately require public S3 access or specific network configurations. Always test remediation in a staging account first.

Output Format

AWS Security Hub Compliance Report
====================================
Organization: acme-corp
Administrator Account: 111122223333
Report Date: 2025-02-23
Standards Enabled: CIS v5.0, AWS FSBP v1.0, PCI DSS v3.2.1

COMPLIANCE SCORES:
  CIS AWS Foundations Benchmark v5.0: 78%
  AWS Foundational Security Best Practices: 85%
  PCI DSS v3.2.1: 72%

TOP FAILED CONTROLS (by account count):
  [S3.1]   Block public access settings enabled      - 23/50 accounts FAILED
  [CT.1]   CloudTrail multi-region enabled            - 12/50 accounts FAILED
  [IAM.4]  Root account has no access keys            -  3/50 accounts FAILED
  [EC2.19] Security groups restrict unrestricted ports- 31/50 accounts FAILED
  [RDS.3]  RDS encryption at rest enabled             - 18/50 accounts FAILED

Bul:ING SUMMARY:
  Total Active Bul:ings: 1,247
  Critical: 34 | High: 189 | Medium: 567 | Low: 457
  Auto-Remediated This Month: 89
  Suppressed: 23

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