VPC Flow Logs Not Enabled

ID: vpc-flowlogs-not-enabled

Severity: low

Author: princechaddha

Tags: cloud,devops,aws,amazon,vpc,aws-cloud-config

Description

Ensures Amazon VPC Flow Logs are enabled for tracking network traffic to and from VPCs, aiding in security and troubleshooting.

YAML Source

id: vpc-flowlogs-not-enabled
info:
  name: VPC Flow Logs Not Enabled
  author: princechaddha
  severity: low
  description: |
    Ensures Amazon VPC Flow Logs are enabled for tracking network traffic to and from VPCs, aiding in security and troubleshooting.
  impact: |
    Without VPC Flow Logs, detecting abnormal traffic patterns or breaches becomes difficult, increasing risk of undetected threats.
  remediation: |
    Enable VPC Flow Logs in the AWS Management Console under the VPC dashboard to collect data on IP traffic going to and from network interfaces in your VPC.
  reference:
    - https://docs.aws.amazon.com/vpc/latest/userguide/flow-logs.html
  metadata:
    max-request: 2
  tags: cloud,devops,aws,amazon,vpc,aws-cloud-config
variables:
  region: "us-east-1"

flow: |
  code(1)
  for(let VpcIds of iterate(template.VpcId)){
    set("vpc", VpcIds)
    code(2)
  }

self-contained: true
code:
  - engine:
      - sh
      - bash
    source: |
      aws ec2 describe-vpcs --region $region --query 'Vpcs[*].VpcId' --output json

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

  - engine:
      - sh
      - bash
    source: |
         aws ec2 describe-flow-logs --region $region --filter "Name=resource-id,Values=$vpc"

    matchers:
      - type: word
        words:
          - "[]"
        condition: and


    extractors:
      - type: dsl
        dsl:
          - '"Flow Logs feature is not enabled for the VPC " + vpc'
# digest: 4a0a004730450220705a6f82fc12aff1f8dec882596ee939a66cd28e670b1101e2928d36dd6affd1022100a15b552689f6ad866959316d7edd61a5df6df1718b6a4fab2113ca37363dee6e:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

$ nuclei -u "URL" -t "cloud/aws/vpc/vpc-flowlogs-not-enabled.yaml"

View on Github