CVE-2023-22845
📋 TL;DR
An out-of-bounds read vulnerability in OpenImageIO's TGA file parser allows attackers to read memory beyond allocated buffers via specially crafted Targa files. This can lead to information disclosure of sensitive data from the application's memory. Affects systems processing TGA files with OpenImageIO v2.4.7.1.
💻 Affected Systems
- OpenImageIO
📦 What is this software?
Openimageio by Openimageio
⚠️ Risk & Real-World Impact
Worst Case
Memory contents including sensitive data like passwords, keys, or other application data could be exfiltrated, potentially enabling further attacks.
Likely Case
Application crashes or information leakage from memory, possibly revealing internal data structures or partial memory contents.
If Mitigated
With proper input validation and memory protections, impact limited to application instability or denial of service.
🎯 Exploit Status
Exploitation requires providing a malicious TGA file to the vulnerable application. The vulnerability is in file parsing code.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v2.4.8.0 or later
Vendor Advisory: https://github.com/OpenImageIO/oiio/security/advisories/GHSA-5j5x-g36c-8x4v
Restart Required: Yes
Instructions:
1. Update OpenImageIO to version 2.4.8.0 or later. 2. Rebuild any applications using OpenImageIO. 3. Restart affected services.
🔧 Temporary Workarounds
Disable TGA file processing
allConfigure applications to reject or not process TGA files
Input validation
allImplement file type validation before passing to OpenImageIO
🧯 If You Can't Patch
- Implement strict file upload controls to block TGA files
- Run OpenImageIO in sandboxed/isolated environment with limited memory access
🔍 How to Verify
Check if Vulnerable:
Check OpenImageIO version: oiiotool --versionCheck Version:
oiiotool --version | grep -i versionVerify Fix Applied:
Verify version is 2.4.8.0 or later and test with known malicious TGA files📡 Detection & Monitoring
Log Indicators:
- Application crashes when processing TGA files
- Memory access violation errors
- Unexpected file parsing errors
Network Indicators:
- Uploads of TGA files to vulnerable endpoints
- Unusual file transfer patterns
SIEM Query:
source="application.log" AND ("segmentation fault" OR "access violation" OR "out of bounds") AND "tga"