Cis Azure Database 5.8

5.8 Ensure server parameter 'require_secure_transport' is set to 'ON' for MySQL Server (Automated)

Profile Applicability

• Level 1

Description

Enable require_secure_transport on MySQL flexible servers.

Rationale

The Secure Sockets Layer (SSL) protocol encrypts network traffic transiting between server and client. Enforcing SSL connections between database server and client applications helps protect against "man in the middle" attacks by encrypting the data stream between the server and application.

Impact

None specified.

Audit

Audit from Azure Portal

1. Login to Azure Portal using https://portal.azure.com.
2. Go to Azure Database for MySQL flexible servers.
3. For each database, under Settings, click Server parameters.
4. In the filter bar, type require_secure_transport.
5. Ensure that the value for require_secure_transport is ON.

Audit from Azure CLI

Ensure the below command returns a value of on:

az mysql flexible-server parameter show --resource-group <resourceGroup> --server-name <serverName> --name require_secure_transport

Audit from PowerShell

Ensure the below command returns a Value of on:

Get-AzMySqlFlexibleServerConfiguration -ResourceGroupName <resourceGroup> -ServerName <serverName> -Name require_secure_transport

Expected Result

The require_secure_transport server parameter should return a value of ON.

Remediation

Remediate from Azure Portal

1. Login to Azure Portal using https://portal.azure.com.
2. Go to Azure Database for MySQL flexible servers.
3. For each database, under Settings, click Server parameters.
4. In the filter bar, type require_secure_transport.
5. Set the VALUE for require_secure_transport to ON.
6. Click Save.

Remediate from Azure CLI

Use the below command to enable require_secure_transport:

az mysql flexible-server parameter set --resource-group <resourceGroup> --server-name <serverName> --name require_secure_transport --value on

Remediate from PowerShell

Use the below command to enable require_secure_transport:

Update-AzMySqlFlexibleServerConfiguration -ResourceGroupName <resourceGroup> -ServerName <serverName> -Name require_secure_transport -Value on

Default Value

Azure Database for MySQL when provisioned through the Azure portal or CLI will require SSL connections by default.

References

1. https://learn.microsoft.com/en-us/azure/mysql/flexible-server/concepts-networking#tls-and-ssl
2. https://learn.microsoft.com/en-us/security/benchmark/azure/mcsb-data-protection#dp-3-encrypt-sensitive-data-in-transit

CIS Controls

MITRE ATT&CK Mappings