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🛡️ AWS VPC is not configured with a VPC Endpoint for Amazon EC2 service🟢

Logic​

Similar Policies​

Description​

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Description​

Ensures that Amazon VPCs are configured with a VPC endpoint for the Amazon EC2 service. A VPC endpoint enables private connectivity between your VPC and supported AWS services without the need for an internet gateway, NAT device, VPN connection, or AWS Direct Connect.

Rationale​

Using VPC endpoints for services such as EC2 enhances security by ensuring all traffic between your VPC and the EC2 service remains within the AWS network. This prevents data exposure to the public internet, reducing the risk of interception and external attacks. Additionally, it improves reliability and helps maintain consistent network performance.

Impact​

Provisioning VPC endpoints may result in additional costs. Charges apply for each hour an interface VPC endpoint is active in an Availability Zone, as well as per GB of data processed.

Audit​

This policy flags an AWS VPC as INCOMPLIANT if it contains at least one EC2 Instance but does not contain an active VPC Endpoint with Endpoint Service ID set to ec2.

... see more

Remediation​

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Remediation​

From Command Line​

Create the VPC Endpoint​
aws ec2 create-vpc-endpoint \
    --vpc-id {{vpc-id}} \
    --service-name com.amazonaws.{{region}}.ec2 \
    --subnet-ids {{subnet-id1}} {{subnet-id2}} \
    --security-group-ids {{security-group-id}}

Using CloudFormation​

  • CloudFormation template (YAML):
AWSTemplateFormatVersion: 2010-09-09
Description: Create EC2 VPC Endpoint

Parameters:
  VpcId:
    Type: String
    Description: The ID of the VPC where the endpoint will be created.
  SubnetIds:
    Type: CommaDelimitedList
    Description: Comma-separated list of subnet IDs for the VPC endpoint.
  SecurityGroupIds:
    Type: CommaDelimitedList
    Description: Comma-separated list of security group IDs to associate with the VPC endpoint.

Resources:
  EC2VpcEndpoint:
    Type: AWS::EC2::VPCEndpoint
    Properties:
      VpcId: !Ref VpcId
      ServiceName: !Sub "com.amazonaws.${AWS::Region}.ec2"
      SubnetIds: !Ref SubnetIds
      SecurityGroupIds: !Ref SecurityGroupIds

Outputs:
  VpcEndpointId:
    Description: The ID of the created VPC endpoint

... [see more](remediation.md)

policy.yaml​

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Linked Framework Sections​

SectionSub SectionsInternal RulesPoliciesFlagsCompliance
💼 AWS Foundational Security Best Practices v1.0.0 → 💼 [EC2.10] Amazon EC2 should be configured to use VPC endpoints that are created for the Amazon EC2 service1no data
💼 Cloudaware Framework → 💼 Secure Access55no data
💼 FedRAMP High Security Controls → 💼 AC-3 Access Enforcement (L)(M)(H)3767no data
💼 FedRAMP High Security Controls → 💼 AC-4 Information Flow Enforcement (M)(H)23679no data
💼 FedRAMP High Security Controls → 💼 AC-4(21) Physical or Logical Separation of Information Flows (M)(H)1146no data
💼 FedRAMP High Security Controls → 💼 AC-6 Least Privilege (M)(H)81156no data
💼 FedRAMP High Security Controls → 💼 AC-21 Information Sharing (M)(H)8no data
💼 FedRAMP High Security Controls → 💼 SC-7 Boundary Protection (L)(M)(H)10848no data
💼 FedRAMP High Security Controls → 💼 SC-7(3) Access Points (M)(H)8no data
💼 FedRAMP High Security Controls → 💼 SC-7(4) External Telecommunications Services (M)(H)28no data
💼 FedRAMP High Security Controls → 💼 SC-7(20) Dynamic Isolation and Segregation (H)8no data
💼 FedRAMP High Security Controls → 💼 SC-7(21) Isolation of System Components (H)22no data
💼 FedRAMP Low Security Controls → 💼 AC-3 Access Enforcement (L)(M)(H)67no data
💼 FedRAMP Low Security Controls → 💼 SC-7 Boundary Protection (L)(M)(H)33no data
💼 FedRAMP Moderate Security Controls → 💼 AC-3 Access Enforcement (L)(M)(H)67no data
💼 FedRAMP Moderate Security Controls → 💼 AC-4 Information Flow Enforcement (M)(H)164no data
💼 FedRAMP Moderate Security Controls → 💼 AC-4(21) Physical or Logical Separation of Information Flows (M)(H)46no data
💼 FedRAMP Moderate Security Controls → 💼 AC-6 Least Privilege (M)(H)656no data
💼 FedRAMP Moderate Security Controls → 💼 AC-21 Information Sharing (M)(H)8no data
💼 FedRAMP Moderate Security Controls → 💼 SC-7 Boundary Protection (L)(M)(H)742no data
💼 FedRAMP Moderate Security Controls → 💼 SC-7(3) Access Points (M)(H)8no data
💼 FedRAMP Moderate Security Controls → 💼 SC-7(4) External Telecommunications Services (M)(H)28no data
💼 NIST CSF v2.0 → 💼 DE.CM-01: Networks and network services are monitored to find potentially adverse events120no data
💼 NIST CSF v2.0 → 💼 DE.CM-09: Computing hardware and software, runtime environments, and their data are monitored to find potentially adverse events139no data
💼 NIST CSF v2.0 → 💼 ID.AM-03: Representations of the organization's authorized network communication and internal and external network data flows are maintained48no data
💼 NIST CSF v2.0 → 💼 PR.AA-05: Access permissions, entitlements, and authorizations are defined in a policy, managed, enforced, and reviewed, and incorporate the principles of least privilege and separation of duties91no data
💼 NIST CSF v2.0 → 💼 PR.DS-01: The confidentiality, integrity, and availability of data-at-rest are protected118no data
💼 NIST CSF v2.0 → 💼 PR.DS-02: The confidentiality, integrity, and availability of data-in-transit are protected98no data
💼 NIST CSF v2.0 → 💼 PR.DS-10: The confidentiality, integrity, and availability of data-in-use are protected112no data
💼 NIST CSF v2.0 → 💼 PR.IR-01: Networks and environments are protected from unauthorized logical access and usage70no data
💼 NIST SP 800-53 Revision 5 → 💼 AC-3 Access Enforcement15537no data
💼 NIST SP 800-53 Revision 5 → 💼 AC-3(7) Access Enforcement _ Role-based Access Control14no data
💼 NIST SP 800-53 Revision 5 → 💼 AC-4 Information Flow Enforcement326889no data
💼 NIST SP 800-53 Revision 5 → 💼 AC-4(21) Information Flow Enforcement _ Physical or Logical Separation of Information Flows3746no data
💼 NIST SP 800-53 Revision 5 → 💼 AC-6 Least Privilege102349no data
💼 NIST SP 800-53 Revision 5 → 💼 AC-21 Information Sharing28no data
💼 NIST SP 800-53 Revision 5 → 💼 SC-7 Boundary Protection29450no data
💼 NIST SP 800-53 Revision 5 → 💼 SC-7(3) Boundary Protection _ Access Points8no data
💼 NIST SP 800-53 Revision 5 → 💼 SC-7(4) Boundary Protection _ External Telecommunications Services28no data
💼 NIST SP 800-53 Revision 5 → 💼 SC-7(11) Boundary Protection _ Restrict Incoming Communications Traffic22no data
💼 NIST SP 800-53 Revision 5 → 💼 SC-7(16) Boundary Protection _ Prevent Discovery of System Components23no data
💼 NIST SP 800-53 Revision 5 → 💼 SC-7(20) Boundary Protection _ Dynamic Isolation and Segregation8no data
💼 NIST SP 800-53 Revision 5 → 💼 SC-7(21) Boundary Protection _ Isolation of System Components22no data