ec2-unrestricted-mongodb: Unrestricted MongoDB Access in EC2

id: ec2-unrestricted-mongodb
info:
  name: Unrestricted MongoDB Access in EC2
  author: princechaddha
  severity: critical
  description: |
    Identifies open access to MongoDB in AWS EC2 security groups, where inbound rules allow unrestricted access (0.0.0.0/0 or ::/0) to TCP port 27017. This poses a significant risk as it can lead to unauthorized access and potential data breaches.
  impact: |
    Allowing unrestricted access to MongoDB in EC2 can lead to unauthorized data access, data manipulation, or denial of service attacks, potentially resulting in critical data breaches and compliance violations.
  remediation: |
    Restrict MongoDB's TCP port 27017 access in EC2 security groups to only those IP addresses that require it, adhering to the principle of least privilege.
  reference:
    - https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-security-groups.html
    - https://www.mongodb.com/docs/manual/security/
  tags: cloud,devops,aws,amazon,ec2,mongodb,aws-cloud-config

variables:
  region: "us-east-1"

self-contained: true
code:
  - engine:
      - sh
      - bash
    source: |
      aws ec2 describe-security-groups --region $region --filters Name=ip-permission.from-port,Values=27017 Name=ip-permission.to-port,Values=27017 Name=ip-permission.cidr,Values='0.0.0.0/0' --query 'SecurityGroups[*].GroupId' --output json
      aws ec2 describe-security-groups --region $region --filters Name=ip-permission.from-port,Values=27017 Name=ip-permission.to-port,Values=27017 Name=ip-permission.ipv6-cidr,Values='::/0' --query 'SecurityGroups[*].GroupId' --output json

    extractors:
      - type: json
        name: securitygroup
        internal: true
        json:
          - '.[]'

      - type: dsl
        dsl:
          - 'securitygroup + " security group(s) alows unrestricted mongodb access (0.0.0.0/0 or ::/0) on port 27017"'
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