CVE-2024-32617
📋 TL;DR
CVE-2024-32617 is a heap-based buffer over-read vulnerability in the HDF5 library that could allow attackers to read sensitive memory contents or cause denial of service. This affects any application or system using HDF5 library versions through 1.14.3 for scientific data storage and analysis. The vulnerability stems from unsafe use of strdup in H5MM_xstrdup function.
💻 Affected Systems
- HDF5 Library
📦 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 disclosure from memory.
Likely Case
Application crash causing denial of service, or limited information disclosure from adjacent memory.
If Mitigated
Application crash with no data loss if proper input validation and memory protections are in place.
🎯 Exploit Status
Exploitation requires processing a specially crafted HDF5 file, which could be delivered via various vectors.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 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 official HDF Group website. 2. Replace existing HDF5 installation with patched version. 3. Recompile any applications using HDF5 against the new library. 4. Restart affected services and applications.
🔧 Temporary Workarounds
Input validation for HDF5 files
allImplement strict validation of HDF5 file inputs before processing
Memory protection hardening
linuxEnable ASLR and other memory protection mechanisms
sysctl -w kernel.randomize_va_space=2
🧯 If You Can't Patch
- Restrict processing of untrusted HDF5 files to isolated environments
- Implement network segmentation to limit access to HDF5 processing services
🔍 How to Verify
Check if Vulnerable:
Check HDF5 library version: h5dump --version or examine library filesCheck Version:
h5dump --version | grep -i versionVerify Fix Applied:
Verify version is 1.14.4 or later and test with known malicious HDF5 files📡 Detection & Monitoring
Log Indicators:
- Application crashes when processing HDF5 files
- Memory access violation errors in application logs
Network Indicators:
- Unusual HDF5 file transfers to sensitive systems
SIEM Query:
source="application.logs" AND ("segmentation fault" OR "access violation") AND "hdf5"