CVE-2024-11569
📋 TL;DR
This vulnerability in IrfanView allows remote attackers to execute arbitrary code by tricking users into opening malicious DXF files. The flaw exists in DXF file parsing where improper input validation enables out-of-bounds reads that can lead to remote code execution. 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 IrfanView process, potentially leading to data theft, ransomware deployment, or persistent backdoor installation.
Likely Case
Local privilege escalation leading to user account compromise, data exfiltration, or malware installation on the affected system.
If Mitigated
Limited impact with proper application sandboxing and user privilege restrictions, potentially resulting only in application crash.
🎯 Exploit Status
Exploitation requires user interaction (opening malicious file) but no authentication. The vulnerability has been publicly disclosed with technical details.
🛠️ 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 IrfanView 4.67 or later from official website
2. Run the installer
3. Follow installation prompts to update
4. No system restart required
🔧 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 or 'Look for an app in the Store'
User awareness training
allEducate users not to open DXF files from untrusted sources
🧯 If You Can't Patch
- Implement application whitelisting to block IrfanView execution
- Deploy endpoint protection with behavioral analysis to detect exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check IrfanView version via Help > About or right-click IrfanView executable > Properties > DetailsCheck Version:
irfanview.exe /?Verify Fix Applied:
Verify 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 with IrfanView faulting module entries
Network Indicators:
- Unusual outbound connections from IrfanView process
- Downloads of DXF files from untrusted sources
SIEM Query:
process_name:"i_view32.exe" OR process_name:"i_view64.exe" AND (file_extension:".dxf" OR file_name:"*.dxf")