| name | cis-azure-storage-17.10 |
| description | Ensure Storage Logging is Enabled for Table Service for 'Read', 'Write', and 'Delete' Requests |
| category | cis-azure-storage |
| version | 1.0.0 |
| author | cyberstrike-official |
| tags | ["cis","azure","storage","storage-accounts","logging"] |
| cis_id | 17.10 |
| cis_benchmark | CIS Microsoft Azure Storage Services Benchmark v1.0.0 |
| tech_stack | ["azure"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
17.10 Ensure Storage Logging is Enabled for Table Service for 'Read', 'Write', and 'Delete' Requests (Automated)
Description
Azure Table storage is a service that stores structured NoSQL data in the cloud, providing a key/attribute store with a schema-less design. Storage Logging happens server-side and allows details for both successful and failed requests to be recorded in the storage account. These logs allow users to see the details of read, write, and delete operations against the tables. Storage Logging log entries contain the following information about individual requests: timing information such as start time, end-to-end latency, and server latency; authentication details; concurrency information; and the sizes of the request and response messages.
Rationale
Storage Analytics logs contain detailed information about successful and failed requests to a storage service. This information can be used to monitor each individual request to a storage service for increased security or diagnostics. Requests are logged on a best-effort basis.
Storage Analytics logging is not enabled by default for your storage account.
Impact
Being a level 2, enabling this setting can have a high impact on the cost of data storage used for logging more data per each request. Do not enable this without determining your need for this level of logging or forget to check in on data usage and projected cost.
Audit Procedure
Audit from Azure Portal
- Go to
Storage Accounts.
- For each storage account, under
Monitoring, click Diagnostics settings.
- Select the
table tab indented below the storage account.
- Ensure that at least one diagnostic setting is listed.
- Click
Edit setting on a diagnostic setting.
- Ensure that at least one diagnostic setting has
StorageRead, StorageWrite, and StorageDelete options selected under the Logs section and that they are sent to an appropriate destination.
Audit from Azure CLI
Ensure the below command output contains properties delete, read and write set to true:
az storage logging show --services t --account-name <storageAccountName>
Audit from Azure Policy
Policy ID: 2fb86bf3-d221-43d1-96d1-2434af34eaa0 - Name: 'Configure diagnostic settings for Table Services to Log Analytics workspace'
Expected Result
Storage logging should be enabled for Table Service with StorageRead, , and all enabled. CLI output should show , , and .
