CVE-2025-14932
📋 TL;DR
A stack-based buffer overflow vulnerability in NSF Unidata NetCDF-C allows remote attackers to execute arbitrary code when users process malicious files or visit malicious pages. This affects systems running vulnerable versions of NetCDF-C libraries. Successful exploitation gives attackers control over the affected system with the privileges of the current user.
💻 Affected Systems
- NSF Unidata NetCDF-C
📦 What is this software?
Netcdf by Unidata
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with remote code execution leading to data theft, ransomware deployment, or persistent backdoor installation.
Likely Case
Local privilege escalation or application crash when users process specially crafted NetCDF files from untrusted sources.
If Mitigated
Application crash without code execution if exploit attempts are blocked by security controls.
🎯 Exploit Status
Requires user interaction to open malicious file. Exploit development requires understanding of NetCDF file format and buffer overflow techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Unidata advisory for specific patched version
Vendor Advisory: https://www.unidata.ucar.edu/software/netcdf/
Restart Required: Yes
Instructions:
1. Check current NetCDF-C version
2. Visit Unidata security advisory page
3. Download and install patched version
4. Restart affected applications
🔧 Temporary Workarounds
Input Validation Filter
allImplement strict validation of NetCDF files before processing, rejecting files with malformed time units.
Sandbox Execution
allRun NetCDF processing applications in isolated containers or sandboxes with minimal privileges.
🧯 If You Can't Patch
- Implement strict file upload controls and validation for NetCDF files
- Use application allowlisting to prevent execution of untrusted NetCDF processing tools
🔍 How to Verify
Check if Vulnerable:
Check NetCDF-C library version and compare against patched versions in Unidata advisory.Check Version:
nc-config --version or check library version in application dependenciesVerify Fix Applied:
Verify installed NetCDF-C version matches or exceeds patched version from vendor advisory.📡 Detection & Monitoring
Log Indicators:
- Application crashes when processing NetCDF files
- Unusual process spawning from NetCDF applications
- Memory access violation errors
Network Indicators:
- Unexpected outbound connections from NetCDF processing systems
- File downloads of NetCDF files from untrusted sources
SIEM Query:
Process: (netcdf OR nc*) AND Event: (AccessViolation OR SegmentationFault)