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Ensure 'Minimum Inbound TLS Version' is set to '1.2' or higher
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Showing SKILL.md
| name | cis-azure-compute-2.1.8 |
| description | Ensure 'Minimum Inbound TLS Version' is set to '1.2' or higher |
| category | cis-azure-compute |
| version | 2.0.0 |
| author | cyberstrike-official |
| tags | ["cis","azure","app-service","tls","encryption","minimum-tls-version","data-in-transit"] |
| cis_id | 2.1.8 |
| cis_benchmark | CIS Microsoft Azure Compute Services Benchmark v2.0.0 |
| tech_stack | ["azure"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
The TLS (Transport Layer Security) protocol secures the transmission of data over the internet using standard encryption technology. App Service apps use TLS 1.2 for the Minimum Inbound TLS Version by default and allow for the use of TLS versions 1.0, 1.1, and 1.3. NIST strongly suggests the use of TLS 1.2 and recommends the adoption of TLS 1.3.
TLS 1.0 and 1.1 are outdated and vulnerable to security risks. Since TLS 1.2 and TLS 1.3 provide enhanced security and improved performance, it is highly recommended to use TLS 1.2 or higher whenever possible.
Using the latest TLS version may affect compatibility with clients and backend services.
App Services.Settings, click Configuration.General settings pane, under Platform settings, ensure that Minimum Inbound TLS Version is set to 1.2 or higher.Run the following command to list apps:
az webapp list
For each app, run the following command to get the TLS version setting:
az webapp config show --resource-group <resource-group-name> --name <app-name> --query minTlsVersion
Ensure that "1.2" or higher is returned.
Run the following command to list apps:
Get-AzWebApp
Run the following command to get the app in a resource group with a given name:
$app = Get-AzWebApp -ResourceGroupName <resource-group-name> -Name <app-name>
Run the following command to get the TLS version setting:
$app.SiteConfig.MinTlsVersion
Ensure that the command returns 1.2 or higher. Repeat for each app.
The minimum TLS version should be 1.2 or higher.
App Services.Settings, click .ConfigurationGeneral settings pane, under Platform settings, click the drop-down next to Minimum Inbound TLS Version and select 1.2 or higher.Save.Continue.For each app requiring remediation, run the following command to update the TLS version:
az webapp config set --resource-group <resource-group-name> --name <app-name> --min-tls-version <1.2|1.3>
For each app requiring remediation, run the following command to update the TLS version:
Set-AzWebApp -ResourceGroupName <resource-group-name> -Name <app-name> -MinTlsVersion <1.2|1.3>
By default, TLS version is set to 1.2.
Level 1 | Automated