CVE-2024-11553
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code by tricking users into opening malicious DXF files in IrfanView. The memory corruption occurs due to improper validation during DXF file parsing, enabling code execution in the current process context. All IrfanView users who open untrusted DXF files are affected.
💻 Affected Systems
- IrfanView
📦 What is this software?
Irfanview by Irfanview
Irfanview by Irfanview
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining the same privileges as the user running IrfanView, potentially leading to data theft, ransomware deployment, or lateral movement.
Likely Case
Malware installation or data exfiltration when users open malicious DXF files from phishing emails or compromised websites.
If Mitigated
Limited impact if users only open trusted files and IrfanView runs with minimal privileges.
🎯 Exploit Status
Exploitation requires user interaction but is straightforward once a malicious DXF file is crafted. The vulnerability was discovered by ZDI and likely to be weaponized.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: IrfanView 4.67 and later
Vendor Advisory: https://www.irfanview.com/main_history.htm
Restart Required: No
Instructions:
1. Download latest IrfanView from official website
2. Run installer and follow prompts
3. Verify version is 4.67 or higher
🔧 Temporary Workarounds
Disable DXF file association
windowsRemove IrfanView as default handler for DXF files to prevent automatic opening
Control Panel > Default Programs > Set Associations > Find .DXF > Change to another program
Run with reduced privileges
windowsConfigure IrfanView to run with limited user permissions
🧯 If You Can't Patch
- Block DXF files at email/web gateways
- Educate users not to open DXF files from untrusted sources
🔍 How to Verify
Check if Vulnerable:
Check IrfanView version via Help > About. If version is below 4.67, system is vulnerable.Check Version:
irfanview.exe /?Verify Fix Applied:
Confirm version is 4.67 or higher in Help > About dialog.📡 Detection & Monitoring
Log Indicators:
- IrfanView crash logs with DXF-related errors
- Windows Application Event Logs showing IrfanView crashes
Network Indicators:
- Downloads of DXF files from suspicious sources
- Unusual outbound connections after DXF file opens
SIEM Query:
source="*irfanview*" AND (event_type="crash" OR file_extension=".dxf")