Microsoft.keyvault.vaults.write remediation

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Event Information

1. The Microsoft.KeyVault.vaults.write event in Azure for AzureSecurityService indicates that a write operation has been performed on an Azure Key Vault resource.
2. This event signifies that a change has been made to the Key Vault, such as creating, updating, or deleting a vault.
3. It is important to monitor this event as it can help track any modifications made to the Key Vault, ensuring the security and integrity of sensitive data stored within it.

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Examples

1. Unauthorized access to key vault: If security is impacted with Microsoft.KeyVault.vaults.write in Azure for AzureSecurityService, it could mean that an unauthorized user or entity has gained write access to the key vault. This can lead to potential data breaches or unauthorized modifications to sensitive information stored in the key vault.
2. Key vault misconfiguration: Another example of security impact could be a misconfiguration in the Azure Security Service, specifically related to the Microsoft.KeyVault.vaults.write permission. This misconfiguration could result in unintended access or exposure of sensitive data stored in the key vault, potentially compromising the security of the system.
3. Insider threat: Security impact with Microsoft.KeyVault.vaults.write in Azure for AzureSecurityService could also indicate an insider threat scenario. An authorized user with the Microsoft.KeyVault.vaults.write permission may be misusing their privileges to perform unauthorized actions, such as modifying or deleting critical data in the key vault, or granting access to unauthorized individuals. This can pose a significant security risk to the organization’s assets and data.

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Remediation

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Using Console

1. Enable Azure Security Center:
   • Log in to the Azure portal.
   • Search for “Security Center” in the search bar and select the Security Center service.
   • Click on “Pricing & settings” in the left-hand menu.
   • Select the subscription and resource group you want to enable Security Center for.
   • Choose the pricing tier that suits your requirements (Free, Standard, or Standard - Trial).
   • Click on “Apply” to save the changes.
2. Configure Security Policies:
   • In the Azure Security Center, click on “Security policy” in the left-hand menu.
   • Select the subscription and resource group you want to configure the policy for.
   • Click on “Add policy” to create a new policy or select an existing policy to modify.
   • Configure the policy settings according to your security requirements, such as enabling specific security recommendations, setting baseline rules, and defining compliance requirements.
   • Click on “Save” to apply the policy.
3. Monitor and Remediate Security Alerts:
   • In the Azure Security Center, click on “Security alerts” in the left-hand menu.
   • Review the list of security alerts and prioritize them based on severity and impact.
   • Click on an alert to view the details and recommended actions.
   • Follow the recommended actions to remediate the security issue, such as applying a patch, updating configurations, or investigating suspicious activities.
   • Once the remediation is complete, mark the alert as resolved or closed.

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Using CLI

1. Enable Azure Security Center Standard Tier:
   • Use the az security pricing create command to enable the Standard tier for Azure Security Center.
   • Example: az security pricing create --name default --tier Standard
2. Enable Just-In-Time (JIT) VM Access:
   • Use the az vmss update command to enable JIT VM Access for a virtual machine scale set.
   • Example: az vmss update --name <vmss-name> --resource-group <resource-group-name> --set virtualMachineProfile.extensionProfile.extensions[0].settings.JitEnabled=true
3. Enable Network Security Group (NSG) Flow Logs:
   • Use the az network watcher flow-log configure command to enable NSG flow logs for a specific network security group.
   • Example: az network watcher flow-log configure --nsg <nsg-name> --resource-group <resource-group-name> --enabled true

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Using Python

1. Enable Azure Security Center: Use the Azure SDK for Python to enable Azure Security Center for your Azure subscription. You can use the azure-mgmt-security package to manage security settings programmatically. Here’s an example script:

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

# Authenticate using default credentials
credential = DefaultAzureCredential()

# Create a Security Center client
security_center_client = SecurityCenter(
    credential=credential,
    subscription_id="<your-subscription-id>"
)

# Enable Azure Security Center for your subscription
security_center_client.auto_provisioning_settings.create_or_update(
    resource_group_name="<your-resource-group>",
    auto_provisioning_setting_name="<your-setting-name>",
    auto_provisioning_setting={
        "auto_provision": "On"
    }
)

2. Configure Security Policies: Use the azure-mgmt-security package to configure security policies for Azure Security Center. You can define policies to enforce specific security controls and compliance standards. Here’s an example script:

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

# Authenticate using default credentials
credential = DefaultAzureCredential()

# Create a Security Center client
security_center_client = SecurityCenter(
    credential=credential,
    subscription_id="<your-subscription-id>"
)

# Configure a security policy
security_center_client.policies.create_or_update(
    resource_group_name="<your-resource-group>",
    policy_name="<your-policy-name>",
    policy={
        "displayName": "My Security Policy",
        "description": "This policy enforces security controls",
        "policyRule": {
            "if": {
                "field": "type",
                "equals": "Microsoft.Compute/virtualMachines"
            },
            "then": {
                "effect": "audit",
                "details": {
                    "type": "AuditIfNotExists",
                    "existenceCondition": {
                        "field": "Microsoft.Compute/virtualMachines/osProfile.linuxConfiguration.ssh.publicKeys[].keyData",
                        "equals": ""
                    }
                }
            }
        }
    }
)

3. Monitor Security Events: Use the azure-mgmt-monitor package to monitor security events in Azure. You can retrieve security event logs and analyze them for potential security issues. Here’s an example script:

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

# Authenticate using default credentials
credential = DefaultAzureCredential()

# Create a Monitor client
monitor_client = MonitorManagementClient(
    credential=credential,
    subscription_id="<your-subscription-id>"
)

# Retrieve security event logs
security_event_logs = monitor_client.activity_logs.list(
    filter="eventTimestamp ge 2022-01-01 and eventTimestamp le 2022-01-31 and category eq 'Security'"
)

# Process security event logs
for log in security_event_logs:
    print(log.event_name.value, log.resource_id, log.event_timestamp)