CVE-2024-34953
📋 TL;DR
CVE-2024-34953 is a memory exhaustion vulnerability in taurusxin ncmdump v1.3.2 that allows attackers to cause Denial of Service (DoS) by supplying a specially crafted .ncm file. This affects users who process untrusted .ncm files with this software, potentially crashing the application and consuming system resources.
💻 Affected Systems
- taurusxin ncmdump
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete system resource exhaustion leading to application crash and potential system instability if memory allocation fails catastrophically.
Likely Case
Application crash when processing malicious .ncm files, disrupting service availability for users relying on ncmdump functionality.
If Mitigated
Minimal impact with proper input validation and resource limits in place, though application may still crash when processing malicious files.
🎯 Exploit Status
Proof of concept available in GitHub repository showing crafted .ncm file generation. Exploitation requires user to process malicious file.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None found
Restart Required: No
Instructions:
No official patch available. Monitor GitHub repository for updates: https://github.com/taurusxin/ncmdump
🔧 Temporary Workarounds
Input validation and file restrictions
allImplement strict validation of .ncm files before processing, including file size limits and format verification
Resource limiting
linuxRun ncmdump with memory limits using containerization or system resource constraints
docker run --memory=256m image_name
ulimit -v 262144
🧯 If You Can't Patch
- Avoid processing untrusted .ncm files with vulnerable version
- Implement network segmentation and restrict file processing to isolated environments
🔍 How to Verify
Check if Vulnerable:
Check ncmdump version: ncmdump --version or examine installed package versionCheck Version:
ncmdump --versionVerify Fix Applied:
Test with known malicious .ncm file from PoC repository to ensure application doesn't crash or exhaust memory📡 Detection & Monitoring
Log Indicators:
- Application crashes when processing .ncm files
- High memory usage spikes followed by process termination
Network Indicators:
- Not applicable - local file processing vulnerability
SIEM Query:
Process termination events for ncmdump with exit code indicating memory allocation failure🔗 References
- https://github.com/Helson-S/FuzzyTesting/blob/master/ncmdump/dos_mmExhausted/dos_mmExhausted.assets/image-20240505161831080.png
- https://github.com/Helson-S/FuzzyTesting/blob/master/ncmdump/dos_mmExhausted/dos_mmExhausted.md
- https://github.com/Helson-S/FuzzyTesting/blob/master/ncmdump/dos_mmExhausted/poc/I7K9QM~F
- https://github.com/Helson-S/FuzzyTesting/tree/master/ncmdump/dos_mmExhausted
- https://github.com/Helson-S/FuzzyTesting/tree/master/ncmdump/dos_mmExhausted/poc
- https://github.com/taurusxin/ncmdump/issues/19
- https://github.com/Helson-S/FuzzyTesting/blob/master/ncmdump/dos_mmExhausted/dos_mmExhausted.assets/image-20240505161831080.png
- https://github.com/Helson-S/FuzzyTesting/blob/master/ncmdump/dos_mmExhausted/dos_mmExhausted.md
- https://github.com/Helson-S/FuzzyTesting/blob/master/ncmdump/dos_mmExhausted/poc/I7K9QM~F
- https://github.com/Helson-S/FuzzyTesting/tree/master/ncmdump/dos_mmExhausted
- https://github.com/Helson-S/FuzzyTesting/tree/master/ncmdump/dos_mmExhausted/poc
- https://github.com/taurusxin/ncmdump/issues/19
