| name | cis-azure-compute-2.4.2 |
| description | Ensure 'Python version' is currently supported (if in use) |
| category | cis-azure-compute |
| version | 2.0.0 |
| author | cyberstrike-official |
| tags | ["cis","azure","functions","deployment-slots"] |
| cis_id | 2.4.2 |
| cis_benchmark | CIS Microsoft Azure Compute Services Benchmark v2.0.0 |
| tech_stack | ["azure"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
Ensure 'Python version' is currently supported (if in use)
Description
Periodically, older versions of Python may be deprecated and no longer supported. Using a supported version of Python for function app deployment slots is recommended to avoid potential unpatched vulnerabilities.
Rationale
Deprecated and unsupported versions of programming and scripting languages can present vulnerabilities which may not be addressed or may not be addressable.
Impact
If your app is written using version-dependent features or libraries, they may not be available on more recent versions. If you wish to update, research the impact thoroughly.
Audit Procedure
Using Azure Portal
- Go to
App Services or Function App.
- Click the name of a function app.
- Under
Deployment, click Deployment slots.
- Click the name of a deployment slot.
- Under
Settings, click Configuration.
- In the
General settings pane, ensure that for a Stack of Python, the Python Version reflects a currently supported release.
- Repeat steps 1-6 for each function app and deployment slot.
Using Azure CLI
Run the following command to list function apps:
az functionapp list
For each function app, run the following command to list deployment slots:
az functionapp deployment slot list --resource-group <resource-group-name> --name <function-app-name>
For each deployment slot, run the following command to get the Python version:
az resource show --name web --resource-group <resource-group-name> --namespace Microsoft.Web --resource-type config --parent sites/<function-app-name>/slots/<deployment-slot-name> --query properties.[linuxFxVersion,pythonVersion]
If Python is in use, ensure the version is currently supported.
Take note of the currently supported versions (given a status of "security") of Python here: https://devguide.python.org/versions/
Expected Result
If Python is in use, the Python version should reflect a currently supported release.
Remediation
Using Azure Portal
- Go to
App Services or .