mapbox / mapbox/magic-cfn-resources

Scope down permission on S3InventoryPolicy

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#37 0 comments 0 reactions 0 assignees View on GitHub

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enhancement
Dominant language
JavaScript
Stars
6
Forks
4
PR merge metrics
No merged PRs in 30d

Description

The [S3inventorypolicy](https://github.com/mapbox/magic-cfn-resources/blob/e655729b2e6dd9aa77f8e66abc6945c44cccac15/lib/build.js#L365-L400) has `Resource: *` permissions for s3.

These should be scoped down to the specific bucket, if possible.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start in lib/build.js around lines 365-400 and inspect how S3InventoryPolicy is assembled. Trace the bucket information available to that policy, then verify the generated permission uses the specific bucket rather than Resource: * where possible; confirm the resulting CloudFormation resource remains valid.

Written by the indexing model from the issue text.

Assessment

Tech stack
aws, javascript
Domain
cloud, security
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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