CVE-2023-42295
📋 TL;DR
A buffer overflow vulnerability in OpenImageIO's read_rle_image function allows remote attackers to execute arbitrary code or cause denial of service. This affects systems processing untrusted image files with OpenImageIO v2.4.12.0. Applications using OpenImageIO for image processing are vulnerable when handling malicious input.
💻 Affected Systems
- OpenImageIO
📦 What is this software?
Openimageio by Openimageio
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or ransomware deployment.
Likely Case
Denial of service through application crashes when processing malicious image files.
If Mitigated
Limited impact if proper input validation and sandboxing prevent code execution.
🎯 Exploit Status
Exploitation requires crafting a malicious image file that triggers the buffer overflow in the read_rle_image function.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v2.4.13.0 or later
Vendor Advisory: https://github.com/OpenImageIO/oiio/issues/3947
Restart Required: Yes
Instructions:
1. Check current OpenImageIO version. 2. Update to v2.4.13.0 or later via package manager or source compilation. 3. Restart any services using OpenImageIO.
🔧 Temporary Workarounds
Input Validation
allImplement strict input validation for image files before processing with OpenImageIO.
Sandbox Execution
allRun OpenImageIO processes in isolated containers or sandboxes to limit impact.
🧯 If You Can't Patch
- Restrict image file processing to trusted sources only.
- Implement network segmentation to isolate systems using OpenImageIO.
🔍 How to Verify
Check if Vulnerable:
Check OpenImageIO version: oiiotool --versionCheck Version:
oiiotool --versionVerify Fix Applied:
Confirm version is v2.4.13.0 or later: oiiotool --version | grep -E '2\.4\.(1[3-9]|[2-9][0-9])'📡 Detection & Monitoring
Log Indicators:
- Application crashes with segmentation faults in OpenImageIO processes
- Error logs mentioning read_rle_image or unquantize.c
Network Indicators:
- Unusual outbound connections from image processing services
SIEM Query:
source="application.logs" AND ("segmentation fault" OR "OpenImageIO" OR "read_rle_image")