file-access-vuln

To test for path traversal and LFI vulnerabilities, route analysis across download endpoints and filesystem path parameters to determine whether inputs affect unsafe file reads. Map findings to classify whether the issue is path traversal or local file inclusion behavior.

Path traversal involves unsafe filesystem path handling for file reads, while insecure upload validation involves flaws in upload-to-serve processing boundaries. Diagnosing file access vulnerabilities requires classifying the issue as either a path traversal/LFI read issue or an upload-validation processing-chain flaw.

Triage file access vulnerabilities by breaking down the upload-to-serve processing flow into accept, store, process, and serve stages. Testing the boundary conditions at each stage determines whether the vulnerability stems from insecure upload validation or overwrite risks.

Yes, this approach applies to testing file preview, transcoding, extraction, and archive handling boundaries during assessments. It routes analysis across these processing flows to identify whether unsafe filesystem path handling or insecure processing boundaries exist.

Test storage-sharing boundaries when diagnosing file access vulnerabilities that involve unsafe filesystem path parameters or download endpoints. This helps determine whether the affected stage is accept, store, process, or serve, ensuring the right boundary conditions are tested first.

File access vulnerability tests fail to classify the affected stage when the processing flow is not decomposed into accept, store, process, and serve boundaries. Mapping the behavior to path traversal/LFI or insecure upload validation requires identifying the exact stage where the unsafe input occurs.