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Am in the only one who cringes at install instructions that require piping some curl output into bash? (programming.dev)

submitted 2 days ago by cschreib@programming.dev to c/linux@programming.dev

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curl https://some-url/ | sh

I see this all over the place nowadays, even in communities that, I would think, should be security conscious. How is that safe? What's stopping the downloaded script from wiping my home directory? If you use this, how can you feel comfortable?

I understand that we have the same problems with the installed application, even if it was downloaded and installed manually. But I feel the bar for making a mistake in a shell script is much lower than in whatever language the main application is written. Don't we have something better than "sh" for this? Something with less power to do harm?

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[–] thomask@lemmy.sdf.org 0 points 8 hours ago (1 children)

I have to assume that we're in this situation because because the app does not exist in our distro's repo (or homebrew or whatever else). So how do you go about this verification? You need a trusted public key, right? You wouldn't happen to be downloading that from the same website that you're worried might be sending you compromised scripts or binaries? You wouldn't happen to be downloading the key from a public keyserver and assuming it belongs to the person whose name is on it?

This is such a ridiculously high bar to avert a "security nightmare". Regular users will be better off ignoring such esoteric suggestions and just looking for lots of stars on GitHub.

[–] jagged_circle@feddit.nl 1 points 5 hours ago (1 children)

No, you download the key from many distinct domains and verify it matches before TOFU

[–] thomask@lemmy.sdf.org 1 points 4 hours ago

Ah yes, so straightforward.