Insufficient Log Data Retention Period in Cloud Logging Buckets

ID: gcloud-log-retention-period-insufficient

Severity: high

Author: princechaddha

Tags: cloud,devops,gcp,gcloud,google-cloud-logging,gcp-cloud-config

Description

For security, reliability, and compliance purposes, ensure that your Cloud Logging buckets are configured with a data retention period of 365 days or more. A Cloud Logging bucket is a container that stores log data from cloud services such as Compute Engine and App Engine. The retention period represents the number of days to retain log data for a user-defined log bucket and also for the _Default log bucket.

YAML Source

id: gcloud-log-retention-period-insufficient

info:
  name: Insufficient Log Data Retention Period in Cloud Logging Buckets
  author: princechaddha
  severity: high
  description: |
    For security, reliability, and compliance purposes, ensure that your Cloud Logging buckets are configured with a data retention period of 365 days or more. A Cloud Logging bucket is a container that stores log data from cloud services such as Compute Engine and App Engine. The retention period represents the number of days to retain log data for a user-defined log bucket and also for the _Default log bucket.
  impact: |
    Configuring a log retention period of less than 365 days can lead to potential data loss, hinder forensic investigations, and result in non-compliance with data retention policies.
  remediation: |
    Update the retention period for your Cloud Logging buckets to 365 days or more using the Google Cloud CLI or the Console to ensure compliance with best practices.
  reference:
    - https://cloud.google.com/logging/docs/export/configure_storage
  tags: cloud,devops,gcp,gcloud,google-cloud-logging,gcp-cloud-config

flow: |
  code(1)
  for(let projectId of iterate(template.projectIds)){
    set("projectId", projectId)
    code(2)
    for(let bucket of iterate(template.buckets)){
      set("bucket", bucket);
      code(3)
      set("retentionDays", template.retentionDays);
      javascript(1)
    }
  }

self-contained: true

code:
  - engine:
      - sh
      - bash
    source: |
      gcloud projects list --format="json(projectId)"

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

  - engine:
      - sh
      - bash
    source: |
      gcloud logging buckets list --project=$projectId --format="json(name.basename())"

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

  - engine:
      - sh
      - bash
    source: |
      gcloud logging buckets describe $bucket --project=$projectId --location=global --format="json(retentionDays)"

    extractors:
      - type: json
        name: retentionDays
        internal: true
        json:
          - '.retentionDays'

javascript:
  - code: |
        let retentionDays = template.retentionDays
        if (retentionDays < 365) {
          let result = `Bucket '${template.bucket}' in project '${template.projectId}' has insufficient log retention period (${retentionDays} days).`;
          Export(result);
        }

    extractors:
      - type: dsl
        dsl:
          - response
# digest: 490a0046304402203da4175f98f7d5637754b6d79d5ad69474d6363977173ea9afbf41d644f521130220597f527d2d641ebae8a95f9b5b207a2ecce063599e5e3547468934e3f100635c: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/gcp/logging/gcloud-log-retention-period-insufficient.yaml"

View on Github