Fix code scanning alert: Potential file system race conditions #1446
Conversation
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
![github-advanced-security[bot]](https://avatars.githubusercontent.com/in/57789?s=60&v=4){kind=small}
Contributor
There was a problem hiding this comment.
Pull Request Overview
This PR addresses file system race condition vulnerabilities by replacing check-then-operate patterns with atomic file descriptor operations. The changes eliminate TOCTOU (time-of-check-time-of-use) vulnerabilities where file state could be modified by an attacker between existence checks and file operations.
Key changes:
- Replaced
existsSyncchecks followed by file operations with atomic file descriptor-based operations - Used
openSyncwith appropriate flags (O_CREAT,O_EXCL,O_RDWR) to create/open files atomically - Wrapped file operations in try-catch blocks to handle race conditions gracefully
Reviewed Changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.
| File | Description |
|---|---|
| packages/core/util/GoogleAnalytics.ts | Replaced existence check with atomic file creation using file descriptors and flags to prevent race conditions when managing UUID storage |
| packages/cli/lib/templates/ReactTemplate.ts | Converted file existence check to atomic file descriptor operations when updating igniteui resources file |
💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.
Co-authored-by: Copilot <[email protected]>
Co-authored-by: Copilot <[email protected]>
Lipata
approved these changes
Nov 10, 2025
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
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Outdated suggestions cannot be applied.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.
Fixes for
https://github.com/IgniteUI/igniteui-cli/security/code-scanning/44
https://github.com/IgniteUI/igniteui-cli/security/code-scanning/45
https://github.com/IgniteUI/igniteui-cli/security/code-scanning/46
Often it is necessary to check the state of a file before using it. These checks usually take a file name to be checked, and if the check returns positively, then the file is opened or otherwise operated upon.
However, in the time between the check and the operation, the underlying file referenced by the file name could be changed by an attacker, causing unexpected behavior.
Copilot Recommendation:
Use file descriptors instead of file names whenever possible.