CVE-2012-6306
📋 TL;DR
HCView 1.4 contains a write access violation vulnerability when processing GIF files, allowing attackers to execute arbitrary code or cause denial of service. This affects users of HCView (Hardcoreview) software. The vulnerability is triggered by specially crafted GIF files.
💻 Affected Systems
- HCView (Hardcoreview)
📦 What is this software?
Hcview by Hcview Project
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with SYSTEM/root privileges leading to complete system compromise.
Likely Case
Application crash (denial of service) or limited code execution within the application context.
If Mitigated
Application crash with no further impact if proper sandboxing and privilege separation are implemented.
🎯 Exploit Status
Exploitation requires the victim to open a malicious GIF file. The vulnerability is memory corruption-based and could lead to arbitrary code execution.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: No vendor advisory found
Restart Required: No
Instructions:
1. Check for updated version from HCView developers
2. If no patch available, consider alternative software
3. Remove HCView 1.4 from production systems
🔧 Temporary Workarounds
Disable GIF file processing
allConfigure HCView to not process GIF files or block GIF file extensions
Application sandboxing
allRun HCView in a sandboxed environment with limited privileges
🧯 If You Can't Patch
- Remove HCView 1.4 from internet-facing systems immediately
- Implement strict file type validation and block all GIF files from being processed by HCView
🔍 How to Verify
Check if Vulnerable:
Check HCView version - if version is 1.4, the system is vulnerableCheck Version:
Check application properties or about dialog in HCViewVerify Fix Applied:
Verify HCView has been updated to a version later than 1.4 or removed from the system📡 Detection & Monitoring
Log Indicators:
- Application crashes when processing GIF files
- Memory access violation errors in application logs
Network Indicators:
- Unusual network traffic from HCView process
- Outbound connections after processing GIF files
SIEM Query:
Process:HCView AND (EventID:1000 OR ExceptionCode:c0000005)