> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/appsec-rules/iac-security/storage/appsec-azure-100.md).

# Cosmos DB Accounts do not have CMKs encrypting data at rest misconfiguration detected in code

## Rule Details

|                        |                                       |
| ---------------------- | ------------------------------------- |
| Cortex AppSec Rule ID  | APPSEC\_AZURE\_100                    |
| Category - Subcategory | Storage - Encryption                  |
| Provider               | AZURE                                 |
| Severity               | LOW                                   |
| Framework              | ARM, Bicep, Terraform, Terraform Plan |

## Impact

Data stored in Azure Cosmos account is automatically encrypted with keys managed by Microsoft (service-managed keys). Customer-managed keys (CMKs) give users total control over the keys used by Azure Cosmos DB to encrypt their data at rest. Built as an additional encryption layer on top of the Azure Cosmos DB default encryption at rest with service managed keys, it uses Azure Key Vault to store encryption keys and provides a way to implement double encryption.

## How to Fix

*Resource:* azurerm\_cosmosdb\_account

* *Arguments:* key\_vault\_key\_id - (Optional) A versionless Key Vault Key ID for CMK encryption.

## Changing this forces a new resource to be created. \[source,go]

{ "resource "azurerm\_cosmosdb\_account" "db" { name = "tfex-cosmos-db-${random\_integer.ri.result}" location = azurerm\_resource\_group.rg.location resource\_group\_name = azurerm\_resource\_group.rg.name offer\_type = "Standard" kind = "GlobalDocumentDB"

enable\_automatic\_failover = true

capabilities { name = "EnableAggregationPipeline" }

capabilities { name = "mongoEnableDocLevelTTL" }

capabilities { name = "MongoDBv3.4" }

consistency\_policy { consistency\_level = "BoundedStaleness" max\_interval\_in\_seconds = 10 max\_staleness\_prefix = 200 }

geo\_location { location = var.failover\_location failover\_priority = 1 }

geo\_location { location = azurerm\_resource\_group.rg.location failover\_priority = 0 }

## } ", }


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