SageMaker notebook not placed in VPC

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Metadata

Id: cloudformation-aws-sagemaker-notebook-not-placed-in-vpc

Provider: AWS

Platform: CloudFormation

Severity: Medium

Category: Networking and Firewall

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Description

SageMaker notebook instances must be launched inside a VPC to prevent unintended public network exposure. This also enables network controls such as security groups, VPC endpoints, and flow logging.

In CloudFormation, AWS::SageMaker::NotebookInstance resources must include the Properties.SubnetId property and reference a subnet in the intended VPC. Also specify Properties.SecurityGroupIds to restrict inbound access, and configure any required VPC endpoints (for example, for S3 and ECR). Resources missing SubnetId will be flagged.

Secure configuration example:

MyNotebook:
  Type: AWS::SageMaker::NotebookInstance
  Properties:
    NotebookInstanceName: my-notebook
    InstanceType: ml.t2.medium
    SubnetId: subnet-0123456789abcdef0
    SecurityGroupIds:
      - sg-0123456789abcdef0

Compliant Code Examples

AWSTemplateFormatVersion: "2010-09-09"
Description: "NotebookInstance"
Resources:
  NotebookInstance:
    Type: "AWS::SageMaker::NotebookInstance"
    DependsOn: [ MountTarget1, MountTarget2, MountTarget3, VpcS3Endpoint ]
    Properties:
      NotebookInstanceName: !Ref NotebookInstanceName
      InstanceType: !Ref NotebookInstanceType
      RoleArn: !GetAtt ExecutionRole.Arn
      RootAccess: Enabled
      SecurityGroupIds:
        - !GetAtt VpcSecurityGroup.GroupId
      SubnetId: !Ref PrivateSubnet1
      DirectInternetAccess: Disabled
      AdditionalCodeRepositories: !If
        - CreateCodeRepo
        - [!GetAtt CodeRepo.CodeRepositoryName]
        - !Ref 'AWS::NoValue'
      LifecycleConfigName: !GetAtt NotebookStartConfig.NotebookInstanceLifecycleConfigName
      VolumeSizeInGB: !Ref EbsVolumeSize
      Tags:
        - Key: Name
          Value: !Ref 'AWS::StackName'
  Vpc:
    Type: 'AWS::EC2::VPC'
    Properties:
      CidrBlock: !Ref VpcCIDR
      EnableDnsSupport: 'true'
      EnableDnsHostnames: 'true'
      Tags:
        - Key: Name
          Value: !Ref 'AWS::StackName'

Non-Compliant Code Examples

AWSTemplateFormatVersion: "2010-09-09"
Description: "NotebookInstance"
Resources:
  NotebookInstance:
    Type: "AWS::SageMaker::NotebookInstance"
    DependsOn: [ MountTarget1, MountTarget2, MountTarget3, VpcS3Endpoint ]
    Properties:
      NotebookInstanceName: !Ref NotebookInstanceName
      InstanceType: !Ref NotebookInstanceType
      RoleArn: !GetAtt ExecutionRole.Arn
      RootAccess: Enabled
      SecurityGroupIds:
        - !GetAtt VpcSecurityGroup.GroupId
      DirectInternetAccess: Disabled
      AdditionalCodeRepositories: !If
        - CreateCodeRepo
        - [!GetAtt CodeRepo.CodeRepositoryName]
        - !Ref 'AWS::NoValue'
      LifecycleConfigName: !GetAtt NotebookStartConfig.NotebookInstanceLifecycleConfigName
      VolumeSizeInGB: !Ref EbsVolumeSize
      Tags:
        - Key: Name
          Value: !Ref 'AWS::StackName'
  Vpc:
    Type: 'AWS::EC2::VPC'
    Properties:
      CidrBlock: !Ref VpcCIDR
      EnableDnsSupport: 'true'
      EnableDnsHostnames: 'true'
      Tags:
        - Key: Name
          Value: !Ref 'AWS::StackName'