.NET の ASM を有効にする

Docker、Kubernetes、AWS ECS、AWS Fargate で動作する .NET アプリのアプリケーションセキュリティを監視することができます。

In general, setting up Application Security Management (ASM) involves:

1. Identifying services that are vulnerable or are under attack, which would most benefit from ASM. Find them on the Security tab of your Service Catalog.
2. Updating to the latest Datadog library (the most recent APM tracing library).
3. Enabling the library to collect the application security data from the services and send it to Datadog.
4. Triggering security signals in your application and seeing how Datadog displays the resulting information.

Prerequisites

• The Datadog Agent is installed and configured for your application’s operating system or container, cloud, or virtual environment.
• Datadog APM is configured for your application or service, and traces are being received by Datadog.
• If your service is running with an Agent with Remote Configuration enabled and a tracing library version that supports it, you can block attackers from the Datadog UI without additional configuration of the Agent or tracing libraries.

詳細はこちら

1. Datadog .NET ライブラリを、ターゲット OS アーキテクチャのバージョン 2.2.0 以上 (Application Vulnerability Management の脆弱性検出機能についてはバージョン 2.16.0 以上) に更新してください。

   サービスの言語やフレームワークのバージョンが ASM 機能に対応しているかどうかは、互換性をご参照ください。

2. 環境変数 DD_APPSEC_ENABLED を true に設定し、ASM を有効化します。例えば、Windows のセルフホストでは、アプリケーションの起動スクリプトの一部として、次の PowerShell スニペットを実行します。

   $target=[System.EnvironmentVariableTarget]::Process
   [System.Environment]::SetEnvironmentVariable("DD_APPSEC_ENABLED","true",$target)
   

   またはアプリケーションの実行場所に応じて、以下の方法のいずれかを選択します。

rem Set environment variables
SET CORECLR_ENABLE_PROFILING=1
SET CORECLR_PROFILER={846F5F1C-F9AE-4B07-969E-05C26BC060D8}
SET DD_APPSEC_ENABLED=true

rem Start application
dotnet.exe example.dll

$target=[System.EnvironmentVariableTarget]::Machine
[System.Environment]::SetEnvironmentVariable("DD_APPSEC_ENABLED","true",$target)
net stop was /y
net start w3svc

$appsecPart = "DD_APPSEC_ENABLED=true"
[string[]] $defaultvariable = @("CORECLR_ENABLE_PROFILING=1", "CORECLR_PROFILER={846F5F1C-F9AE-4B07-969E-05C26BC060D8}", $appsecPart)

function Add-AppSec {

    param (
        $path
    )
    $v = (Get-ItemProperty -Path $path).Environment
    If ($v -eq $null) {
        Set-ItemProperty -Path $path -Name "Environment" -Value $defaultvariable
    }
    ElseIf (-not ($v -match $appsecPart)) {
        $v += " " + $appsecPart;
        Set-ItemProperty -Path $path -Name "Environment" -Value $v
    }
}
Add-AppSec -path "HKLM:SYSTEM\CurrentControlSet\Services\WAS\"
Add-AppSec -path "HKLM:SYSTEM\CurrentControlSet\Services\W3SVC\"

net stop was /y
net start w3svc

<configuration>
  <appSettings>
        <add key="DD_APPSEC_ENABLED" value="true"/>
  </appSettings>
</configuration>

<system.applicationHost>

    <applicationPools>
        <add name="DefaultAppPool">
            <environmentVariables>
                <add name="DD_APPSEC_ENABLED" value="true" />
            </environmentVariables>
            (...)

DD_APPSEC_ENABLED=true

docker run [...] -e DD_APPSEC_ENABLED=true [...]

ENV DD_APPSEC_ENABLED=true

spec:
  template:
    spec:
      containers:
        - name: <CONTAINER_NAME>
          image: <CONTAINER_IMAGE>/<TAG>
          env:
            - name: DD_APPSEC_ENABLED
              value: "true"

"environment": [
  ...,
  {
    "name": "DD_APPSEC_ENABLED",
    "value": "true"
  }
]

ENV DD_APPSEC_ENABLED=true

3. 完全停止と起動を使用して、アプリケーションを再起動します。

   After this configuration is complete, the library collects security data from your application and sends it to the Agent, which sends it to Datadog, where out-of-the-box detection rules flag attacker techniques and potential misconfigurations so you can take steps to remediate.

4. To see Application Security Management threat detection in action, send known attack patterns to your application. For example, trigger the Security Scanner Detected rule by running a file that contains the following curl script:

   for ((i=1;i<=200;i++)); 
   do
   # Target existing service’s routes
   curl https://your-application-url/existing-route -A dd-test-scanner-log;
   # Target non existing service’s routes
   curl https://your-application-url/non-existing-route -A dd-test-scanner-log;
   done

   Note: The dd-test-scanner-log value is supported in the most recent releases.

   A few minutes after you enable your application and exercise it, threat information appears in the Application Signals Explorer and vulnerability information appears in the Vulnerability Explorer.

その他の参考資料

お役に立つドキュメント、リンクや記事:

トレースへのユーザー情報追加DOCUMENTATION .NET Datadog ライブラリソースコードGITHUB すぐに使える Application Security Management ルールDOCUMENTATION Application Security Management のトラブルシューティングDOCUMENTATION