permission: fix parent directory over-grant in fs radix tree#64418
Open
Nashit-h wants to merge 1 commit into
Open
permission: fix parent directory over-grant in fs radix tree#64418Nashit-h wants to merge 1 commit into
Nashit-h wants to merge 1 commit into
Conversation
Collaborator
|
Review requested:
|
nodejs-github-bot
added
c++
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
The FSPermission radix tree marks a node as a leaf whenever a newly inserted grant is routed through it, but a routed-through node is only a shared path prefix, not an allowed entry, so an unrelated parent directory becomes readable. For example
--allow-fs-read=/etc/app/logs/*alongside--allow-fs-read=/etcd/data/fileand--allow-fs-read=/etcx/ymakesprocess.permission.has('fs.read', '/etc')return true. Mark a node as a leaf only when it already ends an inserted path, and keep directory self-access working (has('/dir')when/dir/*is granted) by checking for the trailing-wildcard grant during lookup.