Remote Access Enabled for SQL Server Database Instances

ID: gcloud-sql-remote-access-enabled

Severity: high

Author: princechaddha

Tags: cloud,devops,gcp,gcloud,google-cloud-sql,sqlserver,gcp-cloud-config

Description

Ensure that the “remote access” database flag is turned off for your Google Cloud SQL Server database instances. This prevents the execution of stored procedures from local or remote servers on which your SQL Server instances are running, improving security and compliance.

YAML Source

id: gcloud-sql-remote-access-enabled

info:
  name: Remote Access Enabled for SQL Server Database Instances
  author: princechaddha
  severity: high
  description: |
    Ensure that the "remote access" database flag is turned off for your Google Cloud SQL Server database instances. This prevents the execution of stored procedures from local or remote servers on which your SQL Server instances are running, improving security and compliance.
  impact: |
    Enabling the "remote access" flag for SQL Server database instances can lead to security vulnerabilities, as it allows execution of stored procedures from remote servers. This increases the attack surface of the database.
  remediation: |
    Disable the "remote access" database flag for all SQL Server database instances in Google Cloud Platform. Update the database configuration settings to ensure the flag is turned off.
  reference:
    - https://cloud.google.com/sql/docs/sqlserver/configure-instance-settings
  tags: cloud,devops,gcp,gcloud,google-cloud-sql,sqlserver,gcp-cloud-config

flow: |
  code(1)
  for(let projectId of iterate(template.projectIds)){
    set("projectId", projectId)
    code(2)
    for(let sqlInstance of iterate(template.sqlInstances)){
      set("sqlInstance", sqlInstance)
      code(3)
    }
  }

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 sql instances list --project $projectId --filter='DATABASE_VERSION:SQLSERVER*' --format="json(name)"

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

  - engine:
      - sh
      - bash
    source: |
      gcloud sql instances describe $sqlInstance --format=json | jq '.settings.databaseFlags // [] | .[] | select(.name=="remote access") | .value'

    matchers:
      - type: word
        words:
          - 'on'

    extractors:
      - type: dsl
        dsl:
          - '"Remote Access is enabled for SQL instance " + sqlInstance + " in project " + projectId'
# digest: 4a0a00473045022100caa3988d8fd3a975f90fd1c7ce714d78cdb0cbaaf62a6ce27e4402b18932d2e002202cd3122442109f5ab45c20051160a900dacf9bd7a23cde8e67dcba57d4bf3e96:922c64590222798bb761d5b6d8e72950

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/sql/gcloud-sql-remote-access-enabled.yaml"

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