last sync: 2020-Jul-13 14:14:30 UTC

Azure Policy

CORS should not allow every resource to access your Web Applications

Policy DisplayName CORS should not allow every resource to access your Web Applications
Policy Id 5744710e-cc2f-4ee8-8809-3b11e89f4bc9
Policy Category App Service
Policy 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.
Policy Mode Indexed
Policy Type BuiltIn
Policy in Preview FALSE
Policy Deprecated FALSE
Policy Effect Default: AuditIfNotExists
Allowed: (AuditIfNotExists,Disabled)
Roles used none
Policy Changes no changes
Used in Policy Initiative(s)
Initiative DisplayName Initiative Id
[Preview]: NIST SP 800-171 R2 03055927-78bd-4236-86c0-f36125a10dc9
IRS1075 September 2016 105e0327-6175-4eb2-9af4-1fba43bdb39d
Enable Monitoring in Azure Security Center 1f3afdf9-d0c9-4c3d-847f-89da613e70a8
[Preview]: Australian Government ISM PROTECTED 27272c0b-c225-4cc3-b8b0-f2534b093077
[Preview]: Azure Security Benchmark 42a694ed-f65e-42b2-aa9e-8052e9740a92
Canada Federal PBMM 4c4a5f27-de81-430b-b4e5-9cbd50595a87
[Deprecated]: DOD Impact Level 4 8d792a84-723c-4d92-a3c3-e4ed16a2d133
HITRUST/HIPAA a169a624-5599-4385-a696-c8d643089fab
NIST SP 800-53 R4 cf25b9c1-bd23-4eb6-bd2c-f4f3ac644a5f
FedRAMP High d5264498-16f4-418a-b659-fa7ef418175f
FedRAMP Moderate e95f5a9f-57ad-4d03-bb0b-b1d16db93693
Policy Rule
{
  "properties": {
    "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": "*"
          }
        }
      }
    }
  },
  "id": "/providers/Microsoft.Authorization/policyDefinitions/5744710e-cc2f-4ee8-8809-3b11e89f4bc9",
  "type": "Microsoft.Authorization/policyDefinitions",
  "name": "5744710e-cc2f-4ee8-8809-3b11e89f4bc9"
}