Azure IAM Role for Resource Locking Not Assigned

ID: azure-iam-role-resource-lock-unassigned

Severity: medium

Author: princechaddha

Tags: cloud,devops,azure,microsoft,resource-lock,azure-cloud-config

Description

Ensure there is a custom IAM role assigned to manage resource locking within each Microsoft Azure subscription. Azure resource locking is a powerful protection mechanism that can prevent inadvertent modification or deletion of resources. This role should have specific permissions to read, write, and delete resource locks.

YAML Source

id: azure-iam-role-resource-lock-unassigned
info:
  name: Azure IAM Role for Resource Locking Not Assigned
  author: princechaddha
  severity: medium
  description: |
    Ensure there is a custom IAM role assigned to manage resource locking within each Microsoft Azure subscription. Azure resource locking is a powerful protection mechanism that can prevent inadvertent modification or deletion of resources. This role should have specific permissions to read, write, and delete resource locks.
  impact: |
    Failure to assign a custom IAM role for resource locking can lead to unauthorized changes or deletions of Azure resources, increasing the risk of service disruption and non-compliance with security best practices.
  remediation: |
    Create a custom IAM role with permissions for Microsoft.Authorization/locks/read, Microsoft.Authorization/locks/write, and Microsoft.Authorization/locks/delete and ensure it is assigned to an identity.
  reference:
    - https://docs.microsoft.com/en-us/azure/role-based-access-control/custom-roles
  tags: cloud,devops,azure,microsoft,resource-lock,azure-cloud-config

flow: |
  code(1);
  for (let roleName of iterate(template.roleNameList)) {
    set("roleName", roleName);
    code(2) && code(3)
  }

self-contained: true
code:
  - engine:
      - sh
      - bash
    source: |
      az role definition list --custom-role-only true --query '[].{roleName:roleName}' --output json

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

  - engine:
      - sh
      - bash
    source: |
      az role definition list --name "$roleName" --query '[*].permissions[].actions[]' --output json

    matchers-condition: and
    matchers:
      - type: word
        words:
          - "Microsoft.Authorization/locks/read"
          - "Microsoft.Authorization/locks/write"
          - "Microsoft.Authorization/locks/delete"
        condition: and
        negative: true

  - engine:
      - sh
      - bash
    source: |
      az role assignment list --role "$roleName" --query '[*].principalName' --output json

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

    extractors:
      - type: dsl
        dsl:
          - '"Role " + roleName + " is not assigned to any identity. Role unutilized for resource lock management."'
# digest: 4a0a004730450220528292880851a01be7d5d5e53c8417aa350464ae227befe76f6f1d92cc47ed05022100a67e65a5bb69ad277015f02dbd260fc3676e3c24dcdb485ee37ffd5020474770:922c64590222798bb761d5b6d8e72950

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/azure/accesscontrol/azure-iam-role-resource-lock-unassigned.yaml"

View on Github