microsoft.web.sites.extensions.delete

Event Information

The microsoft.web.sites.extensions.delete event in Azure for Azure Web Service refers to the deletion of an extension associated with a web app.
This event indicates that an extension, such as a custom module or a third-party add-on, has been removed from the web app.
It is important to monitor this event to track any changes made to the extensions of the web app and ensure that the deletion was intentional and authorized.

Examples

Unauthorized deletion: If security is impacted with microsoft.web.sites.extensions.delete in Azure for AzureWebService, it could potentially allow unauthorized individuals to delete critical extensions or components of the web application. This could lead to service disruption or compromise the integrity of the application.
Privilege escalation: A security impact could occur if an attacker gains access to the AzureWebService and uses the microsoft.web.sites.extensions.delete operation to delete extensions. This could potentially allow the attacker to escalate their privileges and gain unauthorized access to sensitive data or perform malicious actions within the application.
Denial of Service (DoS): If security is impacted with microsoft.web.sites.extensions.delete, an attacker could potentially exploit this operation to repeatedly delete extensions or components of the web application, causing a denial of service. This could result in the application becoming unavailable to legitimate users, impacting business operations and potentially leading to financial losses.

Remediation

Using Console

To remediate the issues for Azure AzureWebService using the Azure console, you can follow these step-by-step instructions:

Enable Azure Security Center:
- Go to the Azure portal and search for “Security Center” in the search bar.
- Select “Security Center” from the results and click on it.
- In the Security Center dashboard, click on “Pricing & settings” in the left menu.
- Choose the subscription and resource group where your AzureWebService is located.
- Click on “Apply to all resources” to enable Security Center for all resources in the selected resource group.
- Review the pricing tier options and select the appropriate tier for your needs.
- Click on “Save” to enable Security Center.
Implement Network Security Groups (NSGs):
- Go to the Azure portal and search for “Virtual machines” in the search bar.
- Select “Virtual machines” from the results and click on it.
- Find the virtual machine(s) associated with your AzureWebService.
- Select the virtual machine and click on “Networking” in the left menu.
- Under “Inbound port rules”, click on “Add inbound port rule” to add a new rule.
- Configure the rule to allow only the necessary inbound traffic for your AzureWebService.
- Repeat the above steps for all virtual machines associated with your AzureWebService.
Implement Azure Key Vault for secrets management:
- Go to the Azure portal and search for “Key vaults” in the search bar.
- Select “Key vaults” from the results and click on it.
- Click on “Add” to create a new key vault.
- Provide the necessary details like name, subscription, resource group, and region.
- Configure access policies to grant necessary permissions to your AzureWebService.
- Click on “Review + create” and then “Create” to create the key vault.
- Once the key vault is created, you can store and manage secrets securely.

Note: The above steps are general guidelines and may vary depending on your specific Azure setup and requirements. It is recommended to refer to the official Azure documentation for detailed instructions and best practices.

Using CLI

To remediate the issue for Azure Web Service using Azure CLI, you can follow these steps:

Enable diagnostic logs:
- Use the az webapp log config command to enable diagnostic logs for the Azure Web Service.
- Specify the desired log level and retention days using the --web-server-logging and --detailed-error-messages parameters respectively.
Enable HTTPS Only:
- Use the az webapp update command to enable HTTPS Only for the Azure Web Service.
- Set the --https-only parameter to true to enforce HTTPS communication.
Enable Web Application Firewall (WAF):
- Use the az webapp waf config set command to enable Web Application Firewall for the Azure Web Service.
- Specify the desired rule set type using the --firewall-mode parameter.
- Configure additional settings like custom rules, exclusions, etc., as per your requirements.

Please note that the actual CLI commands may vary based on your specific Azure environment and requirements. Make sure to replace the placeholders with the appropriate values.

Using Python

To remediate the issues for Azure AzureWebService using Python, you can follow these steps:

Monitoring and Alerting:

Use the Azure Monitor service to set up monitoring and alerting for your Azure Web Service.
Create a metric alert to trigger an action when a specific condition is met, such as high CPU usage or low memory availability.
Use the Azure SDK for Python to programmatically create and manage alerts. Here’s an example script:

from azure.mgmt.monitor import MonitorManagementClient
from azure.identity import DefaultAzureCredential

# Authenticate using DefaultAzureCredential
credential = DefaultAzureCredential()

# Create a MonitorManagementClient
monitor_client = MonitorManagementClient(credential, subscription_id)

# Define the alert rule parameters
alert_rule_params = {
    'location': 'eastus',
    'name': 'High CPU Alert',
    'description': 'Alert triggered when CPU usage exceeds 80%',
    'severity': 2,
    'enabled': True,
    'condition': {
        'odata.type': 'Microsoft.Azure.Management.Monitor.Models.ThresholdRuleCondition',
        'dataSource': {
            'odata.type': 'Microsoft.Azure.Management.Monitor.Models.RuleMetricDataSource',
            'resourceUri': '/subscriptions/{subscription_id}/resourceGroups/{resource_group}/providers/Microsoft.Web/sites/{web_service_name}',
            'metricName': 'CpuPercentage',
            'operator': 'GreaterThan',
            'threshold': 80
        }
    },
    'actions': [
        {
            'odata.type': 'Microsoft.Azure.Management.Monitor.Models.RuleEmailAction',
            'sendToServiceOwners': True
        }
    ]
}

# Create the alert rule
monitor_client.alert_rules.create_or_update(
    resource_group_name,
    web_service_name,
    alert_rule_name,
    alert_rule_params
)

Security and Compliance:

Implement Azure Security Center to continuously monitor the security posture of your Azure Web Service.
Enable Azure Security Center’s Just-In-Time (JIT) VM Access feature to restrict access to your virtual machines.
Use the Azure SDK for Python to programmatically enable JIT VM Access. Here’s an example script:

from azure.mgmt.security import SecurityCenterManagementClient
from azure.identity import DefaultAzureCredential

# Authenticate using DefaultAzureCredential
credential = DefaultAzureCredential()

# Create a SecurityCenterManagementClient
security_center_client = SecurityCenterManagementClient(credential, subscription_id)

# Enable JIT VM Access for the web service's virtual machines
security_center_client.jit_network_access_policies.create_or_update(
    resource_group_name,
    web_service_name,
    'default',
    {
        'location': 'eastus',
        'virtualMachines': [
            {
                'id': '/subscriptions/{subscription_id}/resourceGroups/{resource_group}/providers/Microsoft.Compute/virtualMachines/{vm_name}',
                'ports': [
                    {
                        'number': 22,
                        'protocol': 'Tcp',
                        'allowedSourceAddressPrefixes': ['0.0.0.0/0']
                    }
                ]
            }
        ]
    }
)

Cost Optimization:

Utilize Azure Cost Management and Billing to monitor and optimize the costs of your Azure Web Service.
Enable cost alerts to receive notifications when your spending exceeds a certain threshold.
Use the Azure SDK for Python to programmatically create cost alerts. Here’s an example script:

from azure.mgmt.costmanagement import CostManagementClient
from azure.identity import DefaultAzureCredential

# Authenticate using DefaultAzureCredential
credential = DefaultAzureCredential()

# Create a CostManagementClient
cost_management_client = CostManagementClient(credential, subscription_id)

# Define the cost alert parameters
cost_alert_params = {
    'name': 'High Cost Alert',
    'description': 'Alert triggered when monthly spending exceeds $1000',
    'enabled': True,
    'threshold': 1000,
    'time_grain': 'Monthly',
    'time_window': 'PT1H',
    'query': "cost > 1000"
}

# Create the cost alert
cost_management_client.alerts.create_or_update(
    resource_group_name,
    'default',
    cost_alert_params
)

Azure Introduction

Azure Pricing

Azure Threats

Azure Misconfigurations

microsoft.web.sites.extensions.delete

Event Information

Examples

Remediation

Using Console

Using CLI

Using Python

Azure Introduction

Azure Pricing

Azure Threats

Azure Misconfigurations

​Event Information

​Examples

​Remediation

​Using Console

​Using CLI

​Using Python

Event Information

Examples

Remediation

Using Console

Using CLI

Using Python