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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 Access67no data
💼 FedRAMP High Security Controls → 💼 AC-3 Access Enforcement (L)(M)(H)3779no data
💼 FedRAMP High Security Controls → 💼 AC-4 Information Flow Enforcement (M)(H)23796no data
💼 FedRAMP High Security Controls → 💼 AC-4(21) Physical or Logical Separation of Information Flows (M)(H)1156no data
💼 FedRAMP High Security Controls → 💼 AC-6 Least Privilege (M)(H)81170no data
💼 FedRAMP High Security Controls → 💼 AC-21 Information Sharing (M)(H)15no data
💼 FedRAMP High Security Controls → 💼 SC-7 Boundary Protection (L)(M)(H)10874no data
💼 FedRAMP High Security Controls → 💼 SC-7(3) Access Points (M)(H)15no data
💼 FedRAMP High Security Controls → 💼 SC-7(4) External Telecommunications Services (M)(H)42no data
💼 FedRAMP High Security Controls → 💼 SC-7(20) Dynamic Isolation and Segregation (H)15no data
💼 FedRAMP High Security Controls → 💼 SC-7(21) Isolation of System Components (H)31no data
💼 FedRAMP Low Security Controls → 💼 AC-3 Access Enforcement (L)(M)(H)79no data
💼 FedRAMP Low Security Controls → 💼 SC-7 Boundary Protection (L)(M)(H)43no data
💼 FedRAMP Moderate Security Controls → 💼 AC-3 Access Enforcement (L)(M)(H)79no data
💼 FedRAMP Moderate Security Controls → 💼 AC-4 Information Flow Enforcement (M)(H)180no data
💼 FedRAMP Moderate Security Controls → 💼 AC-4(21) Physical or Logical Separation of Information Flows (M)(H)56no data
💼 FedRAMP Moderate Security Controls → 💼 AC-6 Least Privilege (M)(H)670no data
💼 FedRAMP Moderate Security Controls → 💼 AC-21 Information Sharing (M)(H)15no data
💼 FedRAMP Moderate Security Controls → 💼 SC-7 Boundary Protection (L)(M)(H)760no data
💼 FedRAMP Moderate Security Controls → 💼 SC-7(3) Access Points (M)(H)15no data
💼 FedRAMP Moderate Security Controls → 💼 SC-7(4) External Telecommunications Services (M)(H)42no data
💼 NIST CSF v2.0 → 💼 DE.CM-01: Networks and network services are monitored to find potentially adverse events162no data
💼 NIST CSF v2.0 → 💼 DE.CM-09: Computing hardware and software, runtime environments, and their data are monitored to find potentially adverse events163no data
💼 NIST CSF v2.0 → 💼 ID.AM-03: Representations of the organization's authorized network communication and internal and external network data flows are maintained82no 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 duties127no data
💼 NIST CSF v2.0 → 💼 PR.DS-01: The confidentiality, integrity, and availability of data-at-rest are protected174no data
💼 NIST CSF v2.0 → 💼 PR.DS-02: The confidentiality, integrity, and availability of data-in-transit are protected150no data
💼 NIST CSF v2.0 → 💼 PR.DS-10: The confidentiality, integrity, and availability of data-in-use are protected170no data
💼 NIST CSF v2.0 → 💼 PR.IR-01: Networks and environments are protected from unauthorized logical access and usage113no data
💼 NIST SP 800-53 Revision 5 → 💼 AC-3 Access Enforcement15552no data
💼 NIST SP 800-53 Revision 5 → 💼 AC-3(7) Access Enforcement _ Role-based Access Control25no data
💼 NIST SP 800-53 Revision 5 → 💼 AC-4 Information Flow Enforcement3269111no data
💼 NIST SP 800-53 Revision 5 → 💼 AC-4(21) Information Flow Enforcement _ Physical or Logical Separation of Information Flows3756no data
💼 NIST SP 800-53 Revision 5 → 💼 AC-6 Least Privilege102363no data
💼 NIST SP 800-53 Revision 5 → 💼 AC-21 Information Sharing215no data
💼 NIST SP 800-53 Revision 5 → 💼 SC-7 Boundary Protection29481no data
💼 NIST SP 800-53 Revision 5 → 💼 SC-7(3) Boundary Protection _ Access Points15no data
💼 NIST SP 800-53 Revision 5 → 💼 SC-7(4) Boundary Protection _ External Telecommunications Services42no data
💼 NIST SP 800-53 Revision 5 → 💼 SC-7(11) Boundary Protection _ Restrict Incoming Communications Traffic31no data
💼 NIST SP 800-53 Revision 5 → 💼 SC-7(16) Boundary Protection _ Prevent Discovery of System Components32no data
💼 NIST SP 800-53 Revision 5 → 💼 SC-7(20) Boundary Protection _ Dynamic Isolation and Segregation15no data
💼 NIST SP 800-53 Revision 5 → 💼 SC-7(21) Boundary Protection _ Isolation of System Components31no data