Scanning (Legacy)

Two Types of Scanning

As of May 2021, Sysdig Secure includes two different types of scanning for vulnerabilities:

• Image scanning This includes all prior scanning tools, policies, alerts, etc. in Sysdig Secure and focuses on scanning the container images in an environment.

• Host scanning:(New) This feature, deployed via the Node Analyzer, scans the host operating system, whether OS (e.g rpm, dpkg) or non-OS (e.g. Java packages, Ruby gems).

How Sysdig Image Scanning Works

Image scanning allows you to scan container images for vulnerabilities, secrets, license violations, and more. It can be used as part of a development build process, can validate images added to your container registry, and can scan the images used by running containers on your infrastructure.

The basic set up for image scanning is simple: provide registry information where your images are stored, trigger a scan, and review the results.

Behind the scenes:

• Image contents are analyzed.

• The contents report is evaluated against multiple vulnerability databases.

• It is then compared against default or user-defined policies.

• Results are reported, both in Sysdig Secure and (if applicable) in a developer’s external CI tool.

Prerequisites

• Network and port requirements

  Image Scanning requires access to an external vulnerability feed. To ensure proper access to the latest definitions, refer to the Network and Port requirements.

• Whitelisted IP for image scanning requests

  Image scanning requests and Splunk event forwards both originate from 18.209.200.129. To enable Sysdig to scan private repositories, your firewall will need to allow inbound requests from this IP address.

Image Contents Reported

The analysis generates a detailed report of the image contents, including:

• Official OS packages

• Unofficial OS packages

• Configuration files

• Credentials files

• Localization modules and software-specific installers:

  • Javascript with NPM

  • Python PiP

  • Ruby with GEM

  • Java/JVM with .jar archives

• Image metadata and configuration attributes

Vulnerability Databases Used

Sysdig Secure continuously checks against a wide range of vulnerability databases, updating the Runtime scan results with any newly detected CVEs.

The current database list includes:

Use Cases

As an organization, you define what is an acceptable, secure, reliable image running in your environment. Image scanning for the development pipeline follows a somewhat different flow than for security personnel.

Scanning During Container Development (DevOps)

Use image scanning as part of your development pipeline, to check for best practices, vulnerabilities, and sensitive content.

To begin:

• Add Registry: Add a registry where your images are stored, along with the credentials necessary to access them.

• Integrate CI Tool: Integrate image scanning with an external CI tool, using the Jenkins plugin or building your own integration from a SysdigLabs solution.

• Scan Image(s): The plugin or CLI integration triggers the image scanning process. Failed builds will be stopped, if so configured.

• Review Results (in CI tool): Developers can analyze the results in the integrated CI tool (Jenkins).

  (Optionally: add policies or refine the default policies to suit your needs, assign policies to particular images or tags, and configure alerts and notifications.)

Scanning Running Containers (Security Personnel)

Security personnel uses image scanning to monitor which containers are running, what their scan status is, and whether new vulnerabilities are present in their images.

• Add Registry: Add a registry where your images are stored, along with the credentials necessary to access them.

• Scan Image(s): Trigger an image scan with the node image analyzer or manually (one-by-one).

• Review Results (in Sysdig Secure): Security personnel can analyze scan results in the Sysdig Secure image scanning UI.

  (Optionally: add policies or refine the default policies to suit your needs, assign policies to particular images or tags, and configure alerts and notifications.)

Add Scanning to Container Registries

In some cases, it is possible to integrate image scanning directly into a container registry and automatically trigger an event or action every time a new container is pushed into the registry. This feature is currently supported for the following container registry:

• AWS ECR