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Syft

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description Syft Overview

Syft is an open source scanner designed for analyzing container images. It generates a Software Bill of Materials (SBOM) which details all components within a container’s layered structure. This tool is particularly useful for security teams and DevOps professionals seeking to understand and manage the vulnerabilities present in their containerized applications, improving overall security posture.

help Syft FAQ

What does Syft output when it scans a Docker image?

Syft generates a software bill of materials, or SBOM, listing packages and dependencies found in a container image. For example, it can scan an image such as alpine:latest and output CycloneDX, SPDX or Syft JSON.

Does Syft find vulnerabilities by itself?

Syft's main job is SBOM generation, not vulnerability matching. Anchore's Grype is the companion open-source scanner commonly used with Syft output to check packages against vulnerability databases.

Can Syft scan more than container images?

Yes. Syft can scan container images, filesystems, archives and source directories. It supports package ecosystems such as apk, dpkg, rpm, Go, Java, JavaScript, Python, Ruby, Rust and .NET.

Why would a CI pipeline run Syft?

A CI pipeline can run Syft to produce an SBOM artifact for each build, which helps with software supply-chain visibility. Teams often store the SBOM alongside the image digest so they can answer what was shipped in a specific release.

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