CVE-2024-55195
📋 TL;DR
CVE-2024-55195 is an allocation-size-too-big vulnerability in OpenImageIO's image buffer component that can cause denial of service through excessive memory allocation. This affects systems running vulnerable versions of OpenImageIO when processing malicious image files. Users and applications that utilize OpenImageIO for image processing are potentially impacted.
💻 Affected Systems
- OpenImageIO
⚠️ 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 instability or crash due to memory exhaustion, potentially affecting other services on the same host.
Likely Case
Application crash or hang when processing specially crafted image files, leading to service disruption.
If Mitigated
Application gracefully handles the allocation failure with minimal disruption to other services.
🎯 Exploit Status
Exploitation requires crafting malicious image files that trigger the allocation bug. No authentication bypass is needed if the application processes untrusted files.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Update to a stable release (not 3.1.0.0dev) or apply the fix from GitHub issue #4553
Vendor Advisory: https://github.com/AcademySoftwareFoundation/OpenImageIO/issues/4553
Restart Required: No
Instructions:
1. Check current OpenImageIO version. 2. If using v3.1.0.0dev, update to a stable release or apply the patch from GitHub. 3. Recompile/reinstall OpenImageIO. 4. Restart any services using OpenImageIO.
🔧 Temporary Workarounds
Input validation and sanitization
allImplement strict validation of image file inputs before processing with OpenImageIO
Resource limits
Linux/UnixSet memory limits on processes using OpenImageIO to contain potential DoS impact
ulimit -v [memory_limit_in_kb]
🧯 If You Can't Patch
- Implement strict input validation for all image files processed by OpenImageIO
- Isolate OpenImageIO processes with containerization or sandboxing to limit blast radius
🔍 How to Verify
Check if Vulnerable:
Check OpenImageIO version: oiiotool --version | grep 'OpenImageIO'Check Version:
oiiotool --versionVerify Fix Applied:
Verify version is not v3.1.0.0dev and test with known safe image files📡 Detection & Monitoring
Log Indicators:
- Application crashes or abnormal termination when processing image files
- Memory allocation errors in application logs
- High memory usage spikes followed by process termination
Network Indicators:
- Unusually large image file uploads to services using OpenImageIO
SIEM Query:
source="application_logs" AND ("segmentation fault" OR "out of memory" OR "allocation failed") AND process="*OpenImageIO*"