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extract AWS account number from ID without verification #2091

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merged 6 commits into from Nov 16, 2023

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joeleonjr
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Description:

Research by Tal Be'ery documented how to extract AWS account numbers from AWS IDs (ex: AKIASP2TPHJSQH3FJRUX -> 171436882533) without having to interact with the AWS API.

I ported his python function to golang, added error handling, updated logic in the aws.go file and updated the aws integration tests.

Note: if AWS secret verification is successful, the calculated AWS account number gets overwritten by the API's account number response. These values should always be the same.

Also, commented out is a suggestion that we log situations where the calculated account number does not match the API-verified account number. This should rarely (if ever) occur; however, if we can monitor this, that would be helpful to verify accuracy at scale.

Checklist:

  • Tests passing (make test-community)?
  • Lint passing (make lint this requires golangci-lint)?

@joeleonjr joeleonjr requested a review from a team as a code owner November 3, 2023 16:18
@joeleonjr joeleonjr changed the title extract AWS account from ID without verification extract AWS account number from ID without verification Nov 3, 2023
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Does this also work for short-lived AWS credentials (the kind that use session keys)? We recently added a separate detector for those.

@joeleonjr
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Does this also work for short-lived AWS credentials (the kind that use session keys)? We recently added a separate detector for those.

It should. I'm going to move this function into the common lib, so that we can re-use it across that separate detector.

@joeleonjr joeleonjr requested a review from a team as a code owner November 15, 2023 21:40
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@ahrav do you mind doing another quick review now that the code has been refactored and moved to utils?

@joeleonjr joeleonjr merged commit b2042e4 into main Nov 16, 2023
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@joeleonjr joeleonjr deleted the map-aws-id-to-account-id branch November 16, 2023 16:45
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ahrav commented Nov 16, 2023

@ahrav do you mind doing another quick review now that the code has been refactored and moved to utils?

forgot to reply yesterday, but LGTM! Nice work.

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3 participants