True, it’s a private (not local) IP. It could easily have connected to a remote system, as their proof-of-concept did.
This code execs cmd.exe
and pipes output to and from a hardcoded IP. That’s pretty weird. What’s running on that IP? How does the extension know something is there?
It looks like VS Code has no review — human or automated — or enforced entitlement system that would have stopped this or at least had someone verify it was legit.
This draft spec was eventually published as RFC 9562. Compared to the previous spec it adds versions 6, 7, and 8, plus best practices guidance.
Basically, there are a bunch of UUID alternatives that arose to fix the problem that UUIDs are bad for use as database keys in large tables (here’s the perspective of MySQL experts Percona). A bunch of these alternatives are actually linked from the RFC, which I haven’t seen done before. Version 7, in particular, is meant to address this use case.