last sync: 2021-Sep-24 16:09:49 UTC

Azure Policy definition

CORS should not allow every resource to access your Web Applications

Name CORS should not allow every resource to access your Web Applications
Azure Portal
Id 5744710e-cc2f-4ee8-8809-3b11e89f4bc9
Version 1.0.0
details on versioning
Category App Service
Microsoft docs
Description Cross-Origin Resource Sharing (CORS) should not allow all domains to access your web application. Allow only required domains to interact with your web app.
Mode Indexed
Type BuiltIn
Preview FALSE
Deprecated FALSE
Effect Default: AuditIfNotExists
Allowed: (AuditIfNotExists, Disabled)
Used RBAC Role none
History none
Used in Initiatives
Initiative DisplayName Initiative Id Initiative Category State
[Deprecated]: Azure Security Benchmark v1 42a694ed-f65e-42b2-aa9e-8052e9740a92 Regulatory Compliance Deprecated
[Deprecated]: Azure Security Benchmark v2 bb522ac1-bc39-4957-b194-429bcd3bcb0b Regulatory Compliance Deprecated
[Deprecated]: DoD Impact Level 4 8d792a84-723c-4d92-a3c3-e4ed16a2d133 Regulatory Compliance Deprecated
[Preview]: Australian Government ISM PROTECTED 27272c0b-c225-4cc3-b8b0-f2534b093077 Regulatory Compliance Preview
[Preview]: CMMC Level 3 b5629c75-5c77-4422-87b9-2509e680f8de Regulatory Compliance Preview
[Preview]: NIST SP 800-171 R2 03055927-78bd-4236-86c0-f36125a10dc9 Regulatory Compliance Preview
[Preview]: NIST SP 800-53 Rev. 5 179d1daa-458f-4e47-8086-2a68d0d6c38f Regulatory Compliance Preview
Azure Security Benchmark 1f3afdf9-d0c9-4c3d-847f-89da613e70a8 Security Center GA
Canada Federal PBMM 4c4a5f27-de81-430b-b4e5-9cbd50595a87 Regulatory Compliance GA
FedRAMP High d5264498-16f4-418a-b659-fa7ef418175f Regulatory Compliance GA
FedRAMP Moderate e95f5a9f-57ad-4d03-bb0b-b1d16db93693 Regulatory Compliance GA
HITRUST/HIPAA a169a624-5599-4385-a696-c8d643089fab Regulatory Compliance GA
IRS1075 September 2016 105e0327-6175-4eb2-9af4-1fba43bdb39d Regulatory Compliance GA
New Zealand ISM Restricted d1a462af-7e6d-4901-98ac-61570b4ed22a Regulatory Compliance GA
NIST SP 800-53 Rev. 4 cf25b9c1-bd23-4eb6-bd2c-f4f3ac644a5f Regulatory Compliance GA
JSON
{
  "displayName": "CORS should not allow every resource to access your Web Applications",
  "policyType": "BuiltIn",
  "mode": "Indexed",
  "description": "Cross-Origin Resource Sharing (CORS) should not allow all domains to access your web application. Allow only required domains to interact with your web app.",
  "metadata": {
    "version": "1.0.0",
    "category": "App Service"
  },
  "parameters": {
    "effect": {
      "type": "String",
      "metadata": {
        "displayName": "Effect",
        "description": "Enable or disable the execution of the policy"
      },
      "allowedValues": [
        "AuditIfNotExists",
        "Disabled"
      ],
      "defaultValue": "AuditIfNotExists"
    }
  },
  "policyRule": {
    "if": {
      "allOf": [
        {
          "field": "type",
          "equals": "Microsoft.Web/sites"
        },
        {
          "field": "kind",
          "like": "app*"
        }
      ]
    },
    "then": {
      "effect": "[parameters('effect')]",
      "details": {
        "type": "Microsoft.Web/sites/config",
        "existenceCondition": {
          "field": "Microsoft.Web/sites/config/web.cors.allowedOrigins[*]",
          "notEquals": "*"
        }
      }
    }
  }
}