CVE-2024-32619
📋 TL;DR
CVE-2024-32619 is a heap-based buffer overflow vulnerability in the HDF5 library's H5T_copy_reopen function that can corrupt the instruction pointer, potentially allowing arbitrary code execution. This affects any application or system using HDF5 library versions through 1.14.3 for reading or writing HDF5 data files. Organizations using HDF5 for scientific computing, data analysis, or storage are at risk.
💻 Affected Systems
- HDF5 Library
- Applications using HDF5 (e.g., scientific software, data analysis tools)
📦 What is this software?
Hdf5 by Hdfgroup
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with the privileges of the HDF5-using application, potentially leading to full system compromise, data theft, or ransomware deployment.
Likely Case
Application crash (denial of service) when processing malicious HDF5 files, potentially disrupting scientific workflows or data processing pipelines.
If Mitigated
Limited impact if applications run with minimal privileges, have memory protection mechanisms, or process only trusted HDF5 files.
🎯 Exploit Status
Exploitation requires crafting a malicious HDF5 file that triggers the buffer overflow when processed. No public exploit code is known as of the advisory.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: HDF5 1.14.4
Vendor Advisory: https://www.hdfgroup.org/2024/05/new-hdf5-cve-issues-fixed-in-1-14-4/
Restart Required: Yes
Instructions:
1. Download HDF5 1.14.4 or later from https://www.hdfgroup.org/downloads/hdf5/
2. Compile and install the new version following the HDF5 installation guide
3. Recompile any applications using HDF5 against the patched library
4. Restart services or applications using HDF5
🔧 Temporary Workarounds
Restrict HDF5 file sources
allOnly allow HDF5 files from trusted, verified sources to be processed by applications.
Run applications with reduced privileges
allExecute HDF5-using applications with minimal permissions (e.g., non-root users, containers with limited capabilities).
🧯 If You Can't Patch
- Implement strict input validation for HDF5 files, rejecting malformed or unexpected structures.
- Isolate HDF5 processing in sandboxed environments or containers to limit potential damage from exploitation.
🔍 How to Verify
Check if Vulnerable:
Check HDF5 library version: `h5dump --version` or `ldd` on application binaries to see linked HDF5 library version.Check Version:
h5dump --version | grep -o 'HDF5 [0-9.]*'Verify Fix Applied:
Confirm HDF5 version is 1.14.4 or higher using `h5dump --version` and verify applications are linked to the patched library.📡 Detection & Monitoring
Log Indicators:
- Application crashes or segmentation faults when processing HDF5 files
- Unexpected process termination in HDF5-using applications
Network Indicators:
- Unusual file transfers of HDF5 files to vulnerable systems
- Network connections from HDF5 processes to unexpected destinations post-crash
SIEM Query:
Process: (h5dump OR application_name) AND Event: (Segmentation fault OR SIGSEGV OR abnormal exit)