CloudTrail S3 Object Lock

ID: s3-object-lock-not-enabled

Severity: medium

Author: princechaddha

Tags: cloud,devops,aws,amazon,s3,aws-cloud-config

Description

Ensure Amazon CloudTrail S3 buckets have Object Lock enabled to prevent log deletion and ensure regulatory compliance.

YAML Source

id: s3-object-lock-not-enabled
info:
  name: CloudTrail S3 Object Lock
  author: princechaddha
  severity: medium
  description: |
    Ensure Amazon CloudTrail S3 buckets have Object Lock enabled to prevent log deletion and ensure regulatory compliance.
  impact: |
    Without Object Lock, S3 objects such as CloudTrail logs can be deleted, compromising audit trails and violating compliance requirements.
  remediation: |
    Enable S3 Object Lock in Governance mode with a retention period that meets your compliance requirements for CloudTrail S3 buckets.
  reference:
    - https://docs.aws.amazon.com/AmazonS3/latest/dev/object-lock-overview.html
  metadata:
    max-request: 3
  tags: cloud,devops,aws,amazon,s3,aws-cloud-config
variables:
  region: "ap-south-1"

flow: |
  code(1)
  for(let CloudTrail of iterate(template.cloudtrailname)){
    set("trail", CloudTrail)
    code(2)
    for(let BucketNames of iterate(template.buckets)){
      set("bucket", BucketNames)
      code(3)
    }
  }

self-contained: true
code:
  - engine:
      - sh
      - bash
    source: |
      aws cloudtrail list-trails --region $region --query 'Trails[*].Name' --output json

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

  - engine:
      - sh
      - bash
    source: |
      aws cloudtrail describe-trails --region $region --trail-name-list $trail --query 'trailList[*].S3BucketName'

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

  - engine:
      - sh
      - bash
    source: |
      aws s3api get-object-lock-configuration --bucket $bucket --query 'ObjectLockConfiguration.ObjectLockEnabled' --output json

    matchers:
      - type: word
        part: code_3_stderr
        words:
          - 'ObjectLockConfigurationNotFoundError'

    extractors:
      - type: dsl
        dsl:
          - '"The Object Lock feature is not enabled for the S3 bucket associated with the CloudTrail trail " + trail'
# digest: 4a0a0047304502206a9bee19bdcefd4c05c149a0aa0da4c07b77a768fb208897687b8e3c92425e510221008e6b2c80c6e79734c084560ad8640df0b977475c6561d4958bf7219e1a6d3fc7:922c64590222798bb761d5b6d8e72950

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/cloudtrail/s3-object-lock-not-enabled.yaml"

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