Remove UUID() function due to insufficient randomness for security #175
Conversation
- Remove UUID() which used a counter-based approach, not fully random - Keep UUIDv4() for proper random UUID generation - Use SecureToken() for secure token generation instead - Update tests accordingly This aligns with OWASP guidelines for secure random tokens.
Summary of ChangesHello @sixcolors, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed! This pull request addresses a critical security concern by deprecating and removing a custom Highlights
Using Gemini Code AssistThe full guide for Gemini Code Assist can be found on our documentation page, here are some quick tips. Invoking Gemini You can request assistance from Gemini at any point by creating a comment using either
Customization To customize Gemini Code Assist for GitHub experience, repository maintainers can create a configuration file and/or provide a custom code review style guide (such as PEP-8 for Python) by creating and adding files to a Limitations & Feedback Gemini Code Assist may make mistakes. Please leave feedback on any instances where its feedback is incorrect or counter productive. You can react with 👍 and 👎 on @gemini-code-assist comments. If you're interested in giving your feedback about your experience with Gemini Code Assist for Github and other Google products, sign up here. You can also get AI-powered code generation, chat, as well as code reviews directly in the IDE at no cost with the Gemini Code Assist IDE Extension. Footnotes
|
There was a problem hiding this comment.
Code Review
This pull request correctly removes the insecure UUID() function, which was based on a predictable counter, and its associated tests and benchmarks. The changes are clean, correctly remove unused dependencies, and update test references. This is a valuable security enhancement that directs users towards the cryptographically secure UUIDv4() and SecureToken() functions. The implementation is solid and I have no further suggestions.
There was a problem hiding this comment.
Pull request overview
This PR removes the insecure UUID() function from the utils package due to insufficient cryptographic randomness. The function used a counter-based approach that made UUIDs predictable after the initial seed, violating security best practices for token generation.
Key Changes:
- Removed the counter-based
UUID()function and its associated state variables - Removed all tests and benchmarks for the deprecated
UUID()function - Cleaned up unused imports that were only needed by the removed function
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.
| File | Description |
|---|---|
| common.go | Removed the insecure UUID() function implementation (45 lines) and cleaned up related imports (binary, hex, sync, atomic) that are no longer needed |
| common_test.go | Removed test cases and benchmarks for UUID(), updated function name reference in Test_FunctionName from Test_UUID to Test_UUIDv4, and removed unused imports (crypto/rand, fmt) |
Note: The README.md file contains outdated benchmark data for the removed UUID() function (lines 76-79), but it was not updated as part of this PR. Consider updating it in a follow-up to keep documentation in sync with the codebase.
💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.
WalkthroughThis PR removes the legacy Changes
Estimated code review effort🎯 2 (Simple) | ⏱️ ~10 minutes
Possibly related PRs
Suggested labels
Suggested reviewers
Poem
Pre-merge checks and finishing touches❌ Failed checks (1 warning)
✅ Passed checks (2 passed)
✨ Finishing touches
🧪 Generate unit tests (beta)
Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out. Comment |
There was a problem hiding this comment.
Actionable comments posted: 0
🧹 Nitpick comments (1)
common_test.go (1)
16-20: Consider loosening the hard-coded module path in the FunctionName assertion (to reduce test brittleness).
require.Equal(t, "github.com/gofiber/utils/v2.Test_UUIDv4", ...)will fail if the module path/version changes (e.g., v3) even ifFunctionNameis still correct. You could keep the intent while making it resilient by asserting on suffix (e.g.,.Test_UUIDv4) or by usingrequire.ContainsonTest_UUIDv4.
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro
📒 Files selected for processing (2)
common.go(0 hunks)common_test.go(1 hunks)
💤 Files with no reviewable changes (1)
- common.go
🧰 Additional context used
🧬 Code graph analysis (1)
common_test.go (1)
common.go (1)
FunctionName(79-96)
⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (2)
- GitHub Check: Agent
- GitHub Check: Compare
Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## master #175 +/- ##
==========================================
- Coverage 85.08% 84.95% -0.14%
==========================================
Files 12 12
Lines 959 937 -22
==========================================
- Hits 816 796 -20
+ Misses 123 122 -1
+ Partials 20 19 -1
Flags with carried forward coverage won't be shown. Click here to find out more. ☔ View full report in Codecov by Sentry. 🚀 New features to boost your workflow:
|
Summary
This PR removes the
UUID()function from the utils package because it generates insufficiently random UUIDs that are not suitable for security-sensitive use cases. The function used a counter-based approach that could potentially expose request patterns or allow predictability.Problem
The
UUID()function implemented a custom UUID v4 generator using:While technically RFC-compliant, this approach is not cryptographically secure for token generation because:
Solution
UUID()function entirelyUUIDv4()which usesgoogle/uuid.NewRandom()for proper cryptographic randomnessSecureToken()for secure token generation (base64-encoded crypto/rand bytes)Breaking Changes
utils.UUID()is removed - users should migrate toutils.UUIDv4()for UUID generation orutils.SecureToken()for secure tokensUUID()directlyMigration Guide
Security Impact
This change improves the security posture of the utils package by removing a function that could be misused for security-critical operations where true randomness is required.
Related Issues
Tests
All existing tests pass. Removed tests for
UUID()and updated function name references in test helpers.Summary by CodeRabbit
Refactor
Tests
✏️ Tip: You can customize this high-level summary in your review settings.