CVE-2024-29160

What it actually does

Heap buffer overflow in H5HG__cache_heap_deserialize corrupts the instruction pointer, enabling denial of service or potential arbitrary code execution.

Why it matters to the business

Attackers may crash affected services or execute code on systems processing untrusted HDF5 files, leading to operational disruption and potential full system compromise; prevalence in dependent libraries increases exposure across many deployments.

How an attack unfolds

An attacker supplies a malicious HDF5 file that triggers the deserialization routine; the overflow overwrites the instruction pointer, allowing control-flow hijacking for code execution or a crash.

How to fix it

Upgrade grpc/grpc to commit 2485fa94bd8a723e5c977d55a3ce10b301b437f8 or later; rebuild and redeploy all affected applications; validate the update in test environments before production rollout.

How to confirm the fix worked

Confirm the deployed version includes commit 2485fa94bd8a723e5c977d55a3ce10b301b437f8; run regression tests with crafted HDF5 inputs to verify the overflow is no longer reachable.

Typical attack path

1. Craft malicious HDF5 input that overflows the heap buffer during deserialization
2. Deliver the file to an application using the vulnerable library
3. Trigger deserialization to corrupt the instruction pointer
4. Achieve denial of service or attempt code execution

How to detect it

Review application logs for crashes or segmentation faults during HDF5 deserialization; monitor for unexpected process termination or memory corruption indicators in affected services.

What your security team should do

• Prioritize upgrade to the fixed commit across all environments within 30 days
• Scan codebases and dependency graphs for HDF5 usage and flag any instances still on versions through 1.14.3
• Implement file-type sandboxing or input validation for HDF5 processing until patches are applied