Azure Introduction
Azure Pricing
Azure Threats
Certificates key size is less than recommended key size
More Info:
In Microsoft Azure Key Vault, check for any certificates that are generated with minimum key size allowed within your organization, for security and compliance purposes.
Risk Level
Medium
Address
Security
Compliance Standards
CBP
Triage and Remediation
Remediation
To remediate this issue in Azure using Azure Console, follow the below steps:
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Login to Azure portal (https://portal.azure.com/)
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Navigate to the Azure Key Vault where the certificate is stored.
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Click on the certificate that needs to be updated.
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Click on the “Versions” tab and then click on the latest version of the certificate.
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Click on the “Download” button to download the certificate.
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Use OpenSSL or any other certificate management tool to update the certificate key size to the recommended key size.
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Once the certificate is updated, upload the updated certificate to Azure Key Vault.
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Navigate to the Azure Virtual Machine where the certificate is used.
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Click on the “Networking” tab and then click on the “Network interface” associated with the virtual machine.
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Click on the “IP configurations” tab and then click on the “Public IP address” associated with the virtual machine.
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Click on the “Configuration” tab and then click on the “SSL certificates” tab.
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Click on the “Add” button and then select the updated certificate from the Azure Key Vault.
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Click on the “Save” button to save the changes.
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Verify that the updated certificate is now being used by the virtual machine.
By following these steps, you can remediate the certificate key size issue in Azure using Azure Console.
To remediate the certificate key size misconfiguration in Azure using Azure CLI, you can follow the below steps:
Step 1: Log in to the Azure portal and open the Azure CLI.
Step 2: Run the following command to list all the certificates in your subscription:
az keyvault certificate list --vault-name <vault-name> --query [].kid
Note: Replace <vault-name> with the name of your key vault.
Step 3: Choose the certificate that has a key size less than the recommended key size.
Step 4: Run the following command to update the certificate with a new key size:
az keyvault certificate update --vault-name <vault-name> --name <certificate-name> --policy "$(az keyvault certificate show --vault-name <vault-name> --name <certificate-name> --query policy)" --size <new-key-size>
Note: Replace <vault-name> with the name of your key vault, <certificate-name> with the name of the certificate you want to update, and <new-key-size> with the recommended key size.
Step 5: Verify that the certificate has been updated successfully by running the following command:
az keyvault certificate show --vault-name <vault-name> --name <certificate-name> --query policy.key_props.key_size
Note: Replace <vault-name> with the name of your key vault and <certificate-name> with the name of the certificate you updated.
Step 6: Repeat the above steps for all the certificates that have a key size less than the recommended key size.
By following the above steps, you can remediate the certificate key size misconfiguration in Azure using Azure CLI.
To remediate the issue of certificate key size being less than the recommended key size in Azure using Python, you can follow the below steps:
- Import the necessary libraries:
from azure.identity import DefaultAzureCredential
from azure.mgmt.web import WebSiteManagementClient
- Instantiate the
WebSiteManagementClientclass:
credential = DefaultAzureCredential()
subscription_id = 'your-subscription-id'
resource_group_name = 'your-resource-group-name'
webapp_name = 'your-webapp-name'
client = WebSiteManagementClient(credential, subscription_id)
- Get the current certificate properties:
certificate_name = 'your-certificate-name'
certificate = client.certificates.get(resource_group_name, certificate_name)
- Check if the key size is less than the recommended key size:
if certificate.key_size < 2048:
certificate.key_size = 2048
client.certificates.create_or_update(resource_group_name, certificate_name, certificate)
- Update the certificate key size if it is less than the recommended key size:
certificate.key_size = 2048
client.certificates.create_or_update(resource_group_name, certificate_name, certificate)
By following these steps, you can remediate the issue of certificate key size being less than the recommended key size in Azure using Python.