S3 Bucket MFA Delete Configuration Check

ID: s3-mfa-delete-check

Severity: low

Author: princechaddha

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

Description

This template verifies that Amazon S3 buckets are configured with Multi-Factor Authentication (MFA) Delete feature, ensuring enhanced protection against unauthorized deletion of versioned objects

YAML Source

id: s3-mfa-delete-check
info:
  name: S3 Bucket MFA Delete Configuration Check
  author: princechaddha
  severity: low
  description: |
    This template verifies that Amazon S3 buckets are configured with Multi-Factor Authentication (MFA) Delete feature, ensuring enhanced protection against unauthorized deletion of versioned objects
  reference:
    - https://docs.aws.amazon.com/cli/latest/reference/s3api/get-bucket-versioning.html
  metadata:
    max-request: 2
  tags: cloud,devops,aws,amazon,s3,aws-cloud-config

flow: |
  code(1)
  for(let bucketName of iterate(template.buckets)){
    set("bucket", bucketName)
    code(2)
  }

self-contained: true
code:
  - engine:
      - sh
      - bash
    source: |
      aws s3api list-buckets --query 'Buckets[*].Name'

    extractors:
      - type: json # type of the extractor
        internal: true
        name: buckets
        json:
          - '.[]'

  - engine:
      - sh
      - bash
    source: |
        aws s3api get-bucket-versioning --bucket $bucket --query 'MFADelete'

    matchers:
      - type: word
        words:
          - "null"

    extractors:
      - type: dsl
        dsl:
          - '"The S3 bucket " + bucket +" is not configured to use MFA Delete feature"'
# digest: 4a0a00473045022100d5124e78a9716e0b243c2c88d86321a1efcaedb33ac3d4a68932ee2f27f4dd5b02205de1474ee06f1eca0c0eb398856f67d224c3720077f8f460b4a5cfe6b743991d: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/s3/s3-mfa-delete-check.yaml"

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