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Securing Terraform and You, Part 3 -- The Finish Line

9/20: The open source version of Terraform is now OpenTofu 

I swear, this is not a recurring series. The problem just -- finally -- got solved. Part 2 is over here.

I went back to tfsec after seeing the simple start guide posted here, by Liam Galvin at Ghost Security.

There are two aspects of my code: 

  • Allow buckets starting with [word]
  •  deny buckets that don't start with [word].

 The initial guide only has "don't allow buckets that are exactly named this", but that's all I needed to actually get going!

The problems could have been;

  • The rego file and the terraform file don't play well in the same folder. Having the options in two separate subfolders helped even though there was a command that I used to read both files in the same folder.
  • Trivy ... I don't know. Maybe the metadata setup was incorrect - but if it's set up as comments -- readable by the program but not acknowledged in the rego -- who knows. I can work on that in the future.
  • The code was similar though not exact to examples and code I puzzled together initially. 100% it could be wrong (also, ChatGPT didn't know how to write it either. Is this too new and the ChatGPT learning model doesn't know it? )
Remember - tfsec has been bought by Aqua Security, the people behind Trivy; This code could probably work if I put in the correct metadata tags and use the right command.
 
You went back and forth between two programs (tfsec and Trivy) - Why did you stick with coding this solution in rego instead of another language that was compatible with the software?
 
I'm writing this in Feb of 2024;  Probably sunk cost fallacy and feeling that rego, even with its difficulty, was easier to read as code for me than Python is.

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