alt Hacker Newsjust sandbox the interpreter (in this case), package manager and binaries.
u can run in chroot jail and it wouldnt have accessed ssh keys outside of the jail...
theres many more similar technologies aleady existing, for decades.
doing it on a per language basis is not ideal. any new language would have to reinvent the wheel.
better to do it at system level. with the already existing tooling.
openbsd has plege/unveil, linux chroot, namespaces, cgroups, freebsd capsicum or w/e. theres many of these things.
(i am not sure how well they play within these scenarios, but just triggering on the sandboxing comment. theres plenty of ways to do it as far as i can tell...)
What if I wanted to write a program that uses untrusted libraries, but also does some very security sensitive stuff? You are probably going to suggest splitting the program into microservices. But that has a lot of problems and makes things slow.
The problem is that programs can be entire systems, so "doing it at the system level" still means that you'd have to build boundaries inside a program.