Software Bill of Materials (SBOM)

A “software bill of materials” (SBOM) has emerged as a key building block in software security and software supply chain risk management. A SBOM is a nested inventory, a list of ingredients that make up software components.  The SBOM work has advanced since 2018 as a collaborative community effort, driven by National Telecommunications and Information Administration’s (NTIA) multistakeholder process. 

CISA will advance the SBOM work by facilitating community engagement, development, and progress, with a focus on scaling and operationalization, as well as tools, new technologies, and new use cases. This website will also be a nexus for the broader set of SBOM resources across the digital ecosystem and around the world.

An SBOM-related concept is the Vulnerability Exploitability eXchange (VEX).  A VEX document is an attestation, a form of a security advisory that indicates whether a product or products are affected by a known vulnerability or vulnerabilities.

CISA SBOM-a-rama

Date: Wednesday June 14^th, 2023, 9:00 a.m. to 3:00 p.m., Pacific Standard Time (12:00 p.m. to 6:00 p.m., Eastern Standard Time)

Location: The event will be a hybrid event held at the USC Hotel, 3540 S Figueroa St, Los Angeles, CA 90007, as well as virtually, with connection information and dial-in information available here the week before the event.

To support a community effort to advance SBOM technologies, processes, and practices, CISA will facilitate the 2023 CISA SBOM-a-Rama.  The goal of this meeting is to help the broader software and security community understand the current state of SBOM and what efforts have been made by different parts of the SBOM community, including CISA-facilitated community-led work and other activity from sectors and governments. Attendees are invited to ask questions, share comments, and raise further issues that need attention. A full agenda will be posted in advance of the meeting.

This event is open to anyone. CISA welcomes participation from anyone interested in learning about the current state of SBOM practice and implementation, including private sector practitioners, policy experts, academics, and representatives from non-U.S. organizations.

To register for either in-person or virtual participation, click here:
CISA SBOM-a-rama Registration Link.

An official notice of this meeting will appear in the Federal Register shortly.

CISA SBOM Workstreams

CISA recognizes the importance of SBOMs in transparency and security, and that SBOM evolution and refinement should come from the community.  To launch this community work, CISA is facilitating four new workstreams around SBOM, which are intended to advance the software and security communities’ understanding of SBOM creation, use, and implementation across the broader technology ecosystem.  CISA will act as a facilitator and participants will drive the outcomes, including any specific issues of focus or next steps.

• Vulnerability Exploitability eXchange (VEX)
  Meeting Day/Time: Monday 10 AM ET – 11 AM ET (weekly)
  The VEX workstream defines and refines the Vulnerability Exploitability eXchange (VEX) model, which allows attestations on whether a product is affected or not affected by a given vulnerability, and characterizes VEX use cases and operations. 
   
• Sharing & Exchanging
  Meeting Day/Time: Monday 12 PM ET – 1 PM ET (weekly)
  The Sharing and Exchanging workstream will focus on the topic of moving SBOMs, and related metadata, across the software supply chain. The community will have discussions centered around understanding how to enable discovery and access, while underscoring the importance of solution interoperability.
   
• On-Ramps & Adoption
  Meeting Day/Time: Tuesday 12 PM ET – 1 PM ET (weekly)
  The On-Ramps and Adoption workstream will focus on promoting education and awareness to help lower the costs and complexities of adoption, allowing newer or less mature organizations to provide, request, and use SBOMs to secure and understand their organization’s risk. The workstream may also define use cases for SBOM, as well as coordinate efforts across all new and existing SBOM-related workstreams to assist in marketing as well as help to avoid substantive overlap.
   
• Cloud & Online Applications
  Meeting Day/Time: Wednesday 3 PM ET – 4 PM ET (bi-weekly)
  The Cloud and Online Applications workstream will focus on integrating current understanding around SBOM into the context of online applications and modern infrastructure. Most of the existing discussion around SBOM, particularly around SBOM use cases, has focused on on-premise software. Cloud and Software-as-a-Service (SaaS)-based software comprises a large and growing segment of the software ecosystem. It will be important to integrate the current understanding of SBOM with emergent advances in cloud-native technologies to tell better stories about SBOM use cases for cloud and understand how this will be handled across organizational boundaries.
   
• Tooling & Implementation
  Meeting Day/Time: Thursday 3 PM ET – 4 PM ET (weekly)
  The Tooling and Implementation workstream will focus on opportunities and challenges for automating the SBOM ecosystem. This ecosystem will be driven by a range of accessible and constructive tools and enabling applications, both open source and proprietary. This work will potentially enhance existing SBOM data with further implementation details, encourage interoperability across tools and uses, and foster the advancement and efficiency of the tooling marketplace.