Managing the risks associated with third-party software components is a critical challenge for modern software teams. Whether it’s open source or commercial, partial or full libraries, every third-party dependency represents a potential security vulnerability or legal risk. For those that cannot afford to take these risks lightly, Software Bills of Material (SBOMs) are indispensable. But not all SBOMs are created equal. Of course there are many technical requirements to delve into, but to manage software risk effectively, there are three fundamentals you should focus your attention on first: component inventory completeness, integration with Vulnerability Exploitability eXchange (VEX), and the ability to share the report in standard formats.
1. SBOMs Must Be Complete
A partial SBOM is like a map missing half the roads—it might look useful at a glance, but when you use it, you find it’s full of blind spots. A complete SBOM includes everything:
- Open source or commercial components.
- Libraries used in their entirety as well as snippets of, or modified, third-party code.
- Components brought in directly or indirectly through transitive dependencies.
Many organizations make the mistake of generating SBOMs at runtime or only for managed dependencies. This approach lacks complete visibility. Without knowing exactly what’s in your software, you can’t effectively manage risks like security vulnerabilities, license compliance, or even outdated components. To achieve true risk management, your SBOM must offer a full inventory, giving you confidence in your awareness and control.
2. Integrate VEX for Contextualized Vulnerability Management
A good SBOM identifies all your components. Knowing which of them has vulnerabilities is the next step – and furthermore which of those vulnerabilities are exploitable. That’s where Vulnerability Exploitability eXchange (VEX) comes in.
While SBOMs alone tell you what’s there, including VEX provides vital context about risk. Not all vulnerabilities are exploitable in your specific application environment. By integrating VEX into your SBOM, you gain the ability to:
- Focus your efforts on exploitable vulnerabilities, rather than wasting time chasing false positives.
- Prioritize remediation based on real-world risks.
- Empower your development and security teams to work more efficiently.
Incorporating VEX transforms your SBOM from a static inventory to a dynamic tool for actionable insights. It’s not just about checking a box for a regulation – it’s about managing risk effectively.
3. Export and Share in Standard Formats
Your SBOM is only as useful as your ability to share it with the right people and act on it. Regulatory requirements, customer demands, and collaboration within your software supply chain all require standardized formats. Your SBOM should support:
- SPDX and CycloneDX, the most widely recognized formats.
- VEX integration, whether embedded directly or linked to the SBOM.
- Easy exportability for seamless sharing with partners, regulators, and internal teams.
Standard formats ensure interoperability, enabling faster and more effective responses to security incidents. They also position you to meet compliance obligations with confidence, whether it’s for industry standards or evolving government regulations.
The Big Challenge: How to Make This Practical
All of this sounds great, but how do you actually achieve it? The answer lies in effective Software Composition Analysis (SCA) tooling. Your SCA tools must be capable of addressing the real-world complexities of building and maintaining SBOMs.
What to Look for in SCA Tools
Comprehensive Scanning Capabilities
SCA tools should be able to scan your entire codebase, regardless of the programming languages involved. This includes:
- Folder-level, file-level, and snippet-level scanning.
- Unmanaged dependencies and transitive components.
- Cross-platform compatibility to ensure nothing is missed.
Extensive and Updated Knowledge Base
Your SCA tool’s knowledge base should be vast and continuously updated with information on:
- Open source projects and libraries.
- License and copyright details.
- Known vulnerabilities and associated patches.
Intelligent Filtering and Accurate Inventories
One of the biggest challenges in SCA is managing the flood of raw scan results. The right tooling should:
- Intelligently filter results to reduce false positives.
- Match and group files to identify components and avoid duplicate entries.
- Require minimal manual validation, saving time and reducing dependency on expert software auditors.
Expert Software Audit Services
While automation can handle much of the workload, expert services can accelerate your ramp-up. Look for SCA providers that offer audit support to:
- Conduct baseline scanning and identification matching on your codebase.
- Validate your initial SBOMs.
- Guide your team on best practices for ongoing auditing.
Key Features to Prioritize
To achieve the SBOM fundamentals outlined earlier, focus on these critical capabilities in your SCA solution:
- Scope and Accuracy of Knowledge Base: The broader and deeper the knowledge base, the more accurate and useful your SBOM will be.
- Snippet Detection Granularity: The ability to detect fragments of open source code ensures no third-party component slips through unnoticed.
- Smart Result Filtering: Tools that prioritize relevant results minimize manual effort and enhance usability.
- Expert Services: External auditing expertise can make the difference between an SBOM that works and one that’s just a list of components.
The Bottom Line
SBOMs are essential for managing software supply chain risks, but their value depends on the tools and processes behind them. By selecting the right SCA tools and prioritizing the features outlined here, your team can overcome the challenges of creating complete, actionable, and shareable SBOMs.
When your tooling does the heavy lifting, your organization can focus on what really matters—building secure, compliant, and resilient software. Are you ready to tackle the SBOM challenge head-on? Talk to a FossID solution advisor to see how we can help you and how we help other enterprise software teams like Siemens, Bosch, Toyota, Ericsson, AMD and more.
