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HDF5 Security Research PoCs

This repository contains security-research PoC artifacts prepared for the huntr Model Format Vulnerability program (beta). These files are for defensive research and validation only.

Do not use these files in production workflows or load them outside an isolated sandbox.

PoC Files

poc/mdci_fd_parent_oob/mdci_fd_parent_oob.h5 Demonstrates a metadata cache image heap-buffer-overflow through the public H5Fopen() / H5Fclose() path.
poc/mdci_cache_image_dos/do_256m.h5 Demonstrates cache-image-driven memory exhaustion before rejection.
poc/extlink_default_follow/in/evil.h5 Demonstrates default external-link traversal by h5dump -H.
poc/extlink_default_follow/secret/target.h5 Benign target file referenced by evil.h5. It exists only to prove the traversal capability inside the sandbox.

Safety

No PoC performs a destructive action.
No PoC exfiltrates data or performs network callbacks.
The external-link PoC only reads a benign sibling file.
The DoS and memory-corruption PoCs only demonstrate parser impact.

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