CVE-2024-11559
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code by tricking users into opening malicious DXF files in IrfanView. Attackers can gain full control of the affected system through an out-of-bounds write vulnerability in the DXF file parser. All users running vulnerable versions of IrfanView 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 logged-in user, potentially leading to data theft, ransomware deployment, or persistent backdoor installation.
Likely Case
Local privilege escalation leading to malware installation, credential theft, or lateral movement within the network.
If Mitigated
Limited impact with proper application sandboxing and user privilege restrictions, potentially only causing application crashes.
🎯 Exploit Status
Exploitation requires user interaction but is straightforward once a malicious DXF file is crafted. The vulnerability is publicly disclosed through ZDI.
🛠️ 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 the official website
2. Run the installer
3. Follow installation prompts to update
🔧 Temporary Workarounds
Disable DXF file association
windowsRemove IrfanView as the default handler for DXF files to prevent automatic opening
Control Panel > Default Programs > Set Default Programs > Select IrfanView > Choose defaults for this program > Uncheck .DXF
Block DXF files at perimeter
allPrevent DXF files from entering the network via email or web downloads
🧯 If You Can't Patch
- Restrict user privileges to prevent code execution at administrative level
- Implement application whitelisting to block IrfanView execution
🔍 How to Verify
Check if Vulnerable:
Check IrfanView version via Help > About. If version is below 4.67, the system is vulnerable.Check Version:
irfanview.exe /?Verify Fix Applied:
Verify IrfanView version is 4.67 or higher in Help > About dialog.📡 Detection & Monitoring
Log Indicators:
- IrfanView crash logs with memory access violations
- Windows Application Event Logs showing IrfanView failures
Network Indicators:
- Unusual outbound connections from IrfanView process
- DXF file downloads from untrusted sources
SIEM Query:
process_name:"i_view32.exe" OR process_name:"i_view64.exe" AND (event_id:1000 OR event_id:1001)