Ensure that 'Auditing' Retention is 'greater than 90 days'

Risk Level: Low
Cloud Entity: SQL Server on Virtual Machines
CloudGuard Rule ID: D9.AZU.MON.22
Covered by Spectral: Yes
Category: Compute

GSL LOGIC

SQLServer should have auditing.retentionDays>90

REMEDIATION

From Portal

1. Sign in to Azure Management Console
2. Go to 'SQL Server'
3. For each Server, click on Auditing
4. Select Storage Details and set Retention (days) setting greater than 90 days
5. Select Save.

From TF
Set the 'retention_in_days' arguments under 'azurerm_sql_server' as below:

resource "azurerm_sql_server" "example" {
	...
	retention_in_days    = "NumberOfRetentionDays"
	...
}

From Command Line
Run

az sql server audit-policy update --resource-group RESOURCEGROUPNAME --name SERVERNAME --state Enabled --bsts Enabled --storage-account STORAGEACCOUNTNAME --retention-days NUMBEROFDAYS

NOTE : NUMBEROFDAYS should be greater than 90 days

References

1. https://learn.microsoft.com/en-us/azure/azure-sql/database/auditing-overview?view=azuresql
2. https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/mssql_server_extended_auditing_policy
3. https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/sql_server#retention_days
4. https://learn.microsoft.com/en-us/cli/azure/sql/server/audit-policy?view=azure-cli-latest#az-sql-server-audit-policy-update

SQL Server on Virtual Machines

SQL Server on Azure virtual machines enables you to use full versions of SQL Server in the Cloud without having to manage any on-premises hardware. SQL Server VMs also simplify licensing costs when you pay as you go.

Azure virtual machines run in many different geographic regions around the world. They also offer a variety of machine sizes. The virtual machine image gallery allows you to create a SQL Server VM with the right version, edition, and operating system. This makes virtual machines a good option for a many different SQL Server workloads.

Compliance Frameworks

• AZU PCI-DSS 4.0
• Azure CIS Foundations v. 1.1.0
• Azure CIS Foundations v. 1.2.0
• Azure CIS Foundations v. 1.3.0
• Azure CIS Foundations v. 1.3.1
• Azure CIS Foundations v. 1.4.0
• Azure CIS Foundations v. 1.5.0
• Azure CIS Foundations v.2.0
• Azure CloudGuard Best Practices
• Azure HITRUST v9.5.0
• Azure ISO 27001:2013
• Azure ITSG-33
• Azure NIST 800-53 Rev 5
• CloudGuard Azure All Rules Ruleset
• Microsoft Cloud Security Benchmark