v3: Improve path validation in Static Middleware #3105
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ashermyers
requested review from
gaby,
sixcolors,
ReneWerner87 and
efectn
and removed request for
a team
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WalkthroughThe recent changes enhance the security of the Changes
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- middleware/static/static.go (1 hunks)
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middleware/static/static.go (1)
105-117: Security Enhancement: Absolute Path Validation ApprovedThe implementation of absolute path resolution using
filepath.Abseffectively mitigates directory traversal attacks by ensuring that the requested path is within the root directory. The use of appropriate HTTP status codes (500for internal errors and403for forbidden access) enhances security and robustness.
Codecov ReportAttention: Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## main #3105 +/- ##
==========================================
- Coverage 82.76% 82.64% -0.13%
==========================================
Files 114 114
Lines 11149 11159 +10
==========================================
- Hits 9228 9222 -6
- Misses 1521 1533 +12
- Partials 400 404 +4
Flags with carried forward coverage won't be shown. Click here to find out more. ☔ View full report in Codecov by Sentry. |
gaby
changed the title
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@ashermyers thx for the adjustment |
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@ashermyers can you add some test cases code you have changed |
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@coderabbitai full review |
Actions performedFull review triggered. |
WalkthroughThe changes enhance the path validation logic in the Changes
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Files selected for processing (1)
- middleware/static/static.go (1 hunks)
Additional context used
GitHub Check: codecov/patch
middleware/static/static.go
[warning] 108-109: middleware/static/static.go#L108-L109
Added lines #L108 - L109 were not covered by tests
[warning] 114-115: middleware/static/static.go#L114-L115
Added lines #L114 - L115 were not covered by tests
Additional comments not posted (2)
middleware/static/static.go (2)
Line range hint
183-205: Well-implemented helper function.The
isFilefunction is well-implemented with robust error handling and flexibility to work with both custom file systems and the OS file system. This function supports the main functionality by determining if the root is a file, which is crucial for setting the correct path behavior in the middleware.Tools
GitHub Check: codecov/patch
[warning] 108-109: middleware/static/static.go#L108-L109
Added lines #L108 - L109 were not covered by tests
[warning] 114-115: middleware/static/static.go#L114-L115
Added lines #L114 - L115 were not covered by tests
105-117: Approve changes but recommend adding test coverage.The implementation of absolute path resolution is a significant enhancement for security, effectively mitigating directory traversal attacks. The logic to check for errors and ensure the requested path does not escape the designated root directory is correctly implemented.
However, the static analysis tool has flagged that new lines 108-109 and 114-115 are not covered by tests. It is crucial to ensure that these parts of the code are tested to maintain high code quality and reliability.
Tools
GitHub Check: codecov/patch
[warning] 108-109: middleware/static/static.go#L108-L109
Added lines #L108 - L109 were not covered by tests
[warning] 114-115: middleware/static/static.go#L114-L115
Added lines #L114 - L115 were not covered by tests
Description
The code uses filepath.Abs to resolve both the root directory and the requested path to their absolute forms. This improves security by further preventing advanced directory traversal attacks.
Changes introduced
Absolute Path Resolution
Type of change