Support C/C++

[oliverchang]

Connect osv-scanner with

1. Build API for identifying vendored code osv.dev#561
2. The OSV database contains 100% of vulnerabilities from NVD/CVE since 2016 that are determined to relate to OSS osv.dev#783

To provide C/C++ dependency detection and vuln management.

[oliverchang]

@andrewpollock this would be the logical next step after your work on the NVD coverage!

[Chronial]

I don't know if this is the right place for this input. If not, please direct me somewhere else :).

The point of osv.dev#561 seems to be:

Given: file hashes
Return: Repository URL, CPEs, Closest tag/version

For our use case, the input of file hashes would be rather cumbersome. We know our dependencies and their versions – the main problem is effectively mapping these to CPEs. Since the input is not a package repository, but simply official releases / tags, there is no clear global identifier for the library.

Having an API that takes the library name or source repository URL as input and returns a CPE would be really helpful – or does this already exist?

[andrewpollock]

Hi @Chronial,

Not at the API stage yet (or currently planned, but let's talk more). I've done some preliminary CPE Dictionary parsing looking for potential OSS repositories. Check out https://github.com/google/osv.dev/tree/master/vulnfeeds/cmd/cperepos#readme for what exists today. That's essentially CPE -> repository. There's nothing stopping that being reversed...

If you can elaborate a bit more on your use case, as my work on importing relevant CVEs from the NVD evolves, we can determine the appropriateness of turning this into an API.

[varun-endor]

@andrewpollock any rough ETA for C/C++ support? Thanks much for working on this btw.

[andrewpollock]

@varun-endor it's an end-of-year goal overall, but per google/osv.dev#783 (comment) I'll break this down into some milestones for interested parties to follow along on.

[oliverchang]

The NVD database part is out now!

The remaining bits for OSV-Scanner support are:

• Add determineversions support #612
• Scan submodules too. #581