Vamshidher Reddy Jannapu Reddy
14a0beb93c
* fix: stop unbounded recursion decoding self-referencing CycloneDX metadata SafeTensorsModelInfo and GGUFFileHeader both carry a Parts field that is a slice of their own type. When a CycloneDX component with that metadata is decoded from properties, the slice decoder tries element 0, which decodes a struct whose Parts slice tries element 0 one level deeper, and so on. The recursion never finds a base case, building longer property-name prefixes on every level, so memory grows until the process is killed (seen in grype on any machine-learning-model component written by syft). Return early from struct decoding when no property is named by the prefix or nested below it: none of the fields could be decoded anyway, and the recursion is now bounded by the depth of the properties that exist. Refs anchore/grype#3767 Signed-off-by: Vamshidher Reddy Jannapu Reddy <v.jannapu@gmail.com> * perf: look up nested CycloneDX property names in a sorted index The struct check added in the previous commit scanned every property of a component for every struct it decoded. Decoding a slice of structs, such as a package's locations, does that once per element, so a component with n properties took O(n^2): 20,000 location properties took 5.3s to decode instead of 18ms, a cost that an untrusted SBOM can choose. Sort the property names once per Decode/DecodeInto call and binary-search them instead. The result of each check is unchanged; decoding is back to O(n log n) (27ms for the same 20,000 properties). Refs anchore/grype#3767 Signed-off-by: Vamshidher Reddy Jannapu Reddy <v.jannapu@gmail.com> --------- Signed-off-by: Vamshidher Reddy Jannapu Reddy <v.jannapu@gmail.com>
Syft
A CLI tool and Go library for generating a Software Bill of Materials (SBOM) from container images and filesystems. Exceptional for vulnerability detection when used with a scanner like Grype.
Features
- Generates SBOMs for container images, filesystems, archives (see the docs for a full list of supported scan targets)
- Supports dozens of packaging ecosystems (e.g. Alpine (apk), Debian (dpkg), RPM, Go, Python, Java, JavaScript, Ruby, Rust, PHP, .NET, and many more)
- Supports OCI, Docker, Singularity, and more image formats
- Works seamlessly with Grype for vulnerability scanning
- Multiple output formats (CycloneDX, SPDX, Syft JSON, and more) including the ability to convert between SBOM formats
- Create signed SBOM attestations using the in-toto specification
Tip
New to Syft? Check out the Getting Started guide for a walkthrough!
Installation
The quickest way to get up and going:
curl -sSfL https://get.anchore.io/syft | sudo sh -s -- -b /usr/local/bin
Tip
See Installation docs for more ways to get Syft, including Homebrew, Docker, Scoop, Chocolatey, Nix, and more!
The basics
See the packages within a container image or directory:
# container image
syft alpine:latest
# directory
syft ./my-project
To get an SBOM, specify one or more output formats:
# SBOM to stdout
syft <image> -o cyclonedx-json
# Multiple SBOMs to files
syft <image> -o spdx-json=./spdx.json -o cyclonedx-json=./cdx.json
Local containers-storage images
On Linux, syft can scan images from a local containers-storage store (e.g. built with Buildah or Podman) when asked explicitly; plain image references never look there:
syft --from containers-storage localhost/myimage:latest
# rootless stores must be read from inside the builder's user namespace
podman unshare syft --from containers-storage localhost/myimage:latest
This is included in the Linux release binaries. When building from source, add -tags containers_image_openpgp,exclude_graphdriver_btrfs.
Tip
Check out the Getting Started guide to explore all of the capabilities and features.
Want to know all of the ins-and-outs of Syft? Check out the CLI docs, configuration docs, and JSON schema.
Contributing
We encourage users to help make these tools better by submitting issues when you find a bug or want a new feature. Check out our contributing overview and developer-specific documentation if you are interested in providing code contributions.
Syft development is sponsored by Anchore, and is released under the Apache-2.0 License.
The Syft logo by Anchore is licensed under CC BY 4.0
For commercial support options with Syft or Grype, please contact Anchore.
Come talk to us!
The Syft Team holds regular community meetings online. All are welcome to join to bring topics for discussion.
- Check the calendar for the next meeting date.
- Add items to the agenda (join this group for write access to the agenda)
- See you there!