57 lines
1.8 KiB
YAML
57 lines
1.8 KiB
YAML
id: ec2-public-ip
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info:
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name: Public IP on EC2 Instances
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author: princechaddha
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severity: unknown
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description: |
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Ensures Amazon EC2 instances, especially backend ones, do not use public IP addresses to minimize Internet exposure.
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impact: |
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Instances with public IP addresses are more vulnerable to Internet-based threats, compromising network security.
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remediation: |
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Restrict public IP assignment for EC2 instances, particularly for backend instances. Use private IPs and manage access via AWS VPC and security groups.
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reference:
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- https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-instance-addressing.html#concepts-public-addresses
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metadata:
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max-request: 2
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tags: cloud,devops,aws,amazon,ec2,aws-cloud-config
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variables:
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region: "us-east-1"
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flow: |
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code(1)
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for(let InstancesName of iterate(template.instances)){
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set("ec2instance", InstancesName)
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code(2)
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}
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self-contained: true
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code:
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- engine:
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- sh
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- bash
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source: |
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aws ec2 describe-instances --region $region --output json --query 'Reservations[*].Instances[*].InstanceId'
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extractors:
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- type: json
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name: instances
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internal: true
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json:
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- '.[].[]'
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- engine:
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- sh
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- bash
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source: |
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aws ec2 describe-instances --region $region --instance-ids $ec2instance --query "Reservations[*].Instances[*].NetworkInterfaces[*].Association.IpOwnerId[] | []"
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matchers:
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- type: word
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words:
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- "amazon"
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extractors:
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- type: dsl
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dsl:
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- '"The Amazon Instance " + ec2instance + " uses public IP addresses"'
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# digest: 4a0a00473045022100d6d48dea82c4b3c88a81c6060dbedadb56502f1d2b692dd7d309e67b7d20504602203063ae7dcaa055dc54d9d6f0f534a96feb3966280b2a9004201fc21fe7752964:922c64590222798bb761d5b6d8e72950 |