CVE-2024-32605
📋 TL;DR
This vulnerability in the HDF5 library allows attackers to read beyond allocated heap memory boundaries when processing specially crafted HDF5 files. It affects all applications that use HDF5 library versions up to 1.14.3 for reading HDF5 data files. The heap-based buffer over-read could lead to information disclosure or potentially enable further exploitation.
💻 Affected Systems
- HDF5 Library
- Applications using HDF5 library (e.g., scientific software, data analysis tools)
📦 What is this software?
Hdf5 by Hdfgroup
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise if combined with other vulnerabilities, or sensitive data exfiltration from memory.
Likely Case
Application crash (denial of service) or information disclosure from adjacent memory regions.
If Mitigated
Application crash with no data loss if proper memory protections are enabled.
🎯 Exploit Status
Exploitation requires crafting a malicious HDF5 file that triggers the buffer over-read. No authentication is needed if the application processes untrusted files.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: HDF5 1.14.4 and later
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 the HDF Group website. 2. Uninstall the vulnerable HDF5 library version. 3. Install the patched version. 4. Recompile any applications that link against HDF5. 5. Restart affected services and applications.
🔧 Temporary Workarounds
Input Validation
allImplement strict validation of HDF5 files before processing, rejecting files from untrusted sources.
Memory Protection
linuxEnable ASLR and other memory protection mechanisms to reduce exploitability.
echo 2 > /proc/sys/kernel/randomize_va_space
🧯 If You Can't Patch
- Isolate systems using HDF5 from untrusted networks and restrict file uploads.
- Implement application allowlisting to prevent execution of vulnerable HDF5-dependent applications.
🔍 How to Verify
Check if Vulnerable:
Check HDF5 library version: h5dump --version or check linked library version in applications.Check Version:
h5dump --version | grep 'HDF5'Verify Fix Applied:
Verify installed HDF5 version is 1.14.4 or later and test with known safe HDF5 files.📡 Detection & Monitoring
Log Indicators:
- Application crashes with segmentation faults or memory access errors when processing HDF5 files
- Unexpected memory access patterns in application logs
Network Indicators:
- Unusual HDF5 file uploads to web services
- Downloads of HDF5 files from suspicious sources
SIEM Query:
source="application.log" AND ("segmentation fault" OR "memory violation") AND "HDF5"