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6.3.2 Ensure that the 'cross db ownership chaining' database flag for Cloud SQL SQL Server instance is set to 'off'

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Information

It is recommended to set cross db ownership chaining database flag for Cloud SQL SQL Server instance to off.

Rationale:

Use the cross db ownership for chaining option to configure cross-database ownership chaining for an instance of Microsoft SQL Server. This server option allows you to control cross-database ownership chaining at the database level or to allow cross-database ownership chaining for all databases. Enabling cross db ownership is not recommended unless all of the databases hosted by the instance of SQL Server must participate in cross-database ownership chaining and you are aware of the security implications of this setting.This recommendation is applicable to SQL Server database instances.

Solution

From Console:

Go to the Cloud SQL Instances page in the Google Cloud Console by visiting https://console.cloud.google.com/sql/instances.

Select the SQL Server instance for which you want to enable to database flag.

Click Edit.

Scroll down to the Flags section.

To set a flag that has not been set on the instance before, click Add item, choose the flag cross db ownership chaining from the drop-down menu, and set its value to off.

Click Save.

Confirm the changes under Flags on the Overview page.

From Command Line:

List all Cloud SQL database instances using the following command:

gcloud sql instances list
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2. Configure the 'cross db ownership chaining' database flag for every Cloud SQL SQL Server database instance using the below command:

gcloud sql instances patch INSTANCE_NAME --database-flags 'cross db ownership chaining=off'

Note:
This command will overwrite all database flags previously set. To keep those and add new ones, include the values for all flags to be set on the instance; any flag not specifically included is set to its default value. For flags that do not take a value, specify the flag name followed by an equals sign ('=').

See Also

https://workbench.cisecurity.org/files/3316

Item Details

References: CSCv7|14.6

Plugin: GCP

Control ID: 99feaf2fa5af7bf1193c7d33956e4ec032156170d2698a7ef079c496c2e42993