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NOTE: This article has been updated to use the new Azure PowerShell Az module. To learn more about the new Az module and AzureRM compatibility, see Introducing the new Azure PowerShell Az module.

Scan your cloud application (Azure resources) for security vulnerabilities

🕙 30 minutes to complete

The AzSK contains cmdlets that devops teams can use to regularly keep their cloud applications secure during the multiple sprints involving prototyping, core solution development, integration and deployment. These scripts are called Security Verification Tests (SVTs) and cover all prominent features in Azure (e.g., Web Apps, Storage, SQL DB, Key Vault, etc.). Each SVT corresponds to a particular Azure feature or service and automates checks for secure configuration and security best practices for that Azure service.

Note: Ensure that you already have the latest version of AzSK installed on your machine. If not, please follow instructions here.

Step 1: Run the command below after replacing <Subscriptionid> with your Azure SubscriptionId and <RG1, RG2, ..> with a comma-separated list of resource groups where your resources are hosted.

   Get-AzSKAzureServicesSecurityStatus -SubscriptionId <SubscriptionId> -ResourceGroupNames <RG1, RG2,...etc.>

In the command above, an application is represented via a set of resource groups that hold the key cloud resources that constitute the application.

The AzSK also supports other ways of representing an application. For instance, you can also make use of the 'tags' parameter to scan only resources with a specific tag value. More details can be found here.

When the command runs, you will start seeing output such as the following in the PowerShell console. Time required for execution will depend on the number of resources that are being scanned.


So what's happening?

Basically, the AzSK command is scanning all the Azure resources in the given subscription (e.g. in the above case 64 resources were found in the subscription) using a set of security rules implemented in the PS cmdlet 'Get-AzSKAzureServicesSecurityStatus'. Depending upon the type of the Azure resource (e.g., App Service or Data Lake Store), a set of security controls relevant to the resource are evaluated.

As each control is processed, the command prints out information about the specific security check being performed.

Understanding the ouputs

Once the execution is complete, the output folder is (auto) opened for you. It has a single CSV file which provides the consolidated security report for all the resources that were evaluated. Moreover, for each resource group, there is also a detailed LOG file for every resource type that was evaluated from that resource group. To make these logs more convenient to use, they are grouped under separate folders as per the resource groups under which the resources themselves are organized in your subscription.


We can now examine the CSV file to see the control summary. (It opens by default in XLS and you can use "Format as Table", "Hide Columns", "Filter", etc., to quickly look at the controls that have "Failed" or the ones that are marked "Verify" (latter represents controls that need manual confirmations).


For controls that are marked 'Failed' (or 'Verify'), there is usually additional information present in the LOG file to help understand why a control was marked as 'Failed' (or what needs verification if it was marked as 'Verify'). For instance, in the image below, we can see from the LOG file that AzSK has assessed that diagnostics settings are either disabled or data retention is not configured for a minimum 365 days for the Key Vault resource that was scanned.

Note: Timestamps are used to disambiguate multiple invocations of the cmdlets.


Congratulations! You have completed this section of the Getting Started guide successfully!!

Next steps To get more details and understand SVTs and other secure development features of the AzSK further, please refer here.

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