Microsoft AzureOverview
Ensure tls_version on MySQL flexible servers is set to use TLS version 1.2 or higher.
Rationale
TLS connectivity provides a new layer of security by connecting the database server to client applications using Transport Layer Security (TLS). Enforcing TLS connections between the database server and client applications helps protect against "man in the middle" attacks by encrypting the data stream between the server and application.
Default Value
By default, TLS is set to v1.2 for MySQL Flexible servers.
Remediation guidance
Remediate from Azure Portal
- Login to Azure Portal using https://portal.azure.com.
- Go to
Azure Database for MySQL flexible servers. - For each database, under
Settings, clickServer parameters. - In the filter bar, type
tls_version. - Click on the VALUE dropdown next to
tls_version, and checkTLSv1.2(or higher). - Uncheck anything lower than
TLSv1.2. - Click
Save.
Remediate from Azure CLI
Use the below command to update MySQL flexible servers to use TLS version 1.2:
az mysql flexible-server parameter set --resource-group <resourceGroup> --server-name <serverName> --name tls_version --value TLSv1.2
Remediate from PowerShell
Use the below command to update MySQL flexible servers to use TLS version 1.2:
Update-AzMySqlFlexibleServerConfiguration -ResourceGroupName <resourceGroup> -ServerName <serverName> -Name tls_version -Value TLSv1.2
Service-wide remediation
Recommended when many resources are affected: fix the platform baseline first so new resources inherit the secure setting, then remediate the existing flagged resources in batches.
Azure
Use management group or subscription Azure Policy assignments, remediation tasks where supported, landing-zone standards, and IaC modules so drift is prevented at scale.
Operational rollout
- Fix the baseline first at the account, subscription, project, cluster, or tenant scope that owns this control.
- Remediate the currently affected resources in batches, starting with internet-exposed and production assets.
- Re-scan and track approved exceptions with an owner and expiry date.
Query logic
These are the stored checks tied to this control.
Azure MySQL Flexible Servers allowing old TLS versions
Connectors
Covered asset types
Expected check: eq []
{
mySqlFlexibleServers(
where: {
configurations_SOME: {
name: "tls_version"
OR: [{ value_CONTAINS: "TLSv1.0" }, { value_CONTAINS: "TLSv1.1" }]
}
}
) {
...AssetFragment
}
}
