CVE-2024-6822
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on systems running vulnerable versions of IrfanView. Attackers can exploit this by tricking users into opening malicious CIN files or visiting malicious web pages. Users of IrfanView who process untrusted CIN files are affected.
💻 Affected Systems
- IrfanView
📦 What is this software?
Irfanview by Irfanview
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining the same privileges as the current user, potentially leading to data theft, ransomware deployment, or lateral movement.
Likely Case
Local privilege escalation or malware installation on the affected system, with potential for data exfiltration.
If Mitigated
Limited impact with proper application sandboxing and user privilege restrictions, potentially only application crash.
🎯 Exploit Status
Requires user interaction to open malicious file. ZDI-CAN-23261 indicates it was reported through coordinated disclosure.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check IrfanView website for latest version
Vendor Advisory: https://www.irfanview.com/
Restart Required: No
Instructions:
1. Visit https://www.irfanview.com/
2. Download and install the latest version of IrfanView
3. Replace any existing installations
🔧 Temporary Workarounds
Disable CIN file association
windowsRemove IrfanView as the default handler for .cin files
Application sandboxing
windowsRun IrfanView in a restricted environment or sandbox
🧯 If You Can't Patch
- Block .cin files at email gateways and web proxies
- Educate users not to open untrusted CIN files
🔍 How to Verify
Check if Vulnerable:
Check IrfanView version in Help > About. If not the latest version from irfanview.com, assume vulnerable.Check Version:
irfanview.exe /?Verify Fix Applied:
Verify IrfanView version matches the latest available on the official website.📡 Detection & Monitoring
Log Indicators:
- Application crashes from IrfanView when processing CIN files
- Unusual process creation from IrfanView
Network Indicators:
- Downloads of .cin files from untrusted sources
SIEM Query:
Process:IrfanView AND (FileExtension:cin OR Crash)