CVE-2024-32611
📋 TL;DR
CVE-2024-32611 is a critical vulnerability in the HDF5 library where uninitialized memory usage in attribute handling functions could lead to arbitrary code execution. This affects all applications that use HDF5 for data storage and manipulation, particularly scientific computing, data analysis, and engineering software. The vulnerability is present in HDF5 versions through 1.14.3.
💻 Affected Systems
- HDF5 Library
- Applications using HDF5 (e.g., scientific software, data analysis tools, engineering applications)
📦 What is this software?
Hdf5 by Hdfgroup
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with full system compromise, potentially leading to data theft, system takeover, or lateral movement within networks.
Likely Case
Application crashes (denial of service) or memory corruption leading to potential information disclosure or limited code execution.
If Mitigated
Application crashes without code execution if memory protections like ASLR are effective, but information disclosure remains possible.
🎯 Exploit Status
Exploitation requires triggering the vulnerable code path through HDF5 file manipulation, which may be accessible via network services processing HDF5 files.
🛠️ 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 from https://www.hdfgroup.org/downloads/hdf5/. 2. Compile and install following platform-specific build instructions. 3. Recompile any applications using HDF5 against the new library. 4. Restart affected services and applications.
🔧 Temporary Workarounds
Disable HDF5 file processing
allTemporarily block or disable functionality that processes HDF5 files in network-facing applications.
Network filtering
allBlock or filter HDF5 files at network boundaries using file type detection.
🧯 If You Can't Patch
- Isolate systems using HDF5 from untrusted networks and restrict file upload capabilities.
- Implement strict input validation and sandboxing for HDF5 file processing functionality.
🔍 How to Verify
Check if Vulnerable:
Check HDF5 library version: h5dump --version or examine library files for version strings.Check Version:
h5dump --version 2>&1 | grep -i versionVerify Fix Applied:
Verify installed HDF5 version is 1.14.4 or later using h5dump --version.📡 Detection & Monitoring
Log Indicators:
- Application crashes with segmentation faults or memory access errors when processing HDF5 files
- Unexpected process terminations in HDF5-using applications
Network Indicators:
- Unusual HDF5 file uploads to network services
- Network traffic containing HDF5 file signatures to vulnerable applications
SIEM Query:
Process:Terminated AND (Image:*h5* OR CommandLine:*hdf5*) OR FileCreate:*.h5