CVE-2023-47992

What it actually does

Integer overflow in FreeImageIO.cpp::_MemoryReadProc permits out-of-bounds memory access, enabling information disclosure, denial of service, or arbitrary code execution.

Why it matters to the business

Organizations using affected FreeImage versions face risks of data exposure, service outages, and full system compromise, with public exploits increasing urgency despite no listed patches.

How an attack unfolds

An attacker crafts a malicious image or input stream that triggers the integer overflow during _MemoryReadProc execution, leading to memory corruption that can be leveraged for code execution or crashes.

How to fix it

Upgrade FreeImage to the latest available version once patches are released; in the interim, restrict processing of untrusted image files and consider alternative libraries.

How to confirm the fix worked

Confirm FreeImage version is not 3.18.0; test with known proof-of-concept inputs targeting _MemoryReadProc if available; monitor vendor advisories for fixed releases.

Typical attack path

1. Identify target application or service embedding FreeImage 3.18.0
2. Deliver crafted image or data via network or file input
3. Trigger _MemoryReadProc to induce integer overflow
4. Leverage resulting memory corruption for information leak, DoS, or RCE

How to detect it

Monitor application logs for crashes or unexpected behavior during image processing; inspect for memory corruption artifacts in affected processes; review network traffic for anomalous image payloads.

What your security team should do

• Prioritize inventory of all FreeImage deployments due to ExploitAvailable status and 1011 days since publication
• Apply updates immediately when fixed versions become available
• Implement input sanitization or sandboxing for image processing workflows
• Review and restrict network-accessible endpoints that accept image inputs