CVE-2024-13051
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code by tricking users into opening malicious VC6 files in Ashlar-Vellum Graphite. Attackers can gain control of the affected system through a heap-based buffer overflow during file parsing. Users of Ashlar-Vellum Graphite who open untrusted VC6 files are at risk.
💻 Affected Systems
- Ashlar-Vellum Graphite
📦 What is this software?
Graphite by Ashlar
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining full control of the affected machine, potentially leading to data theft, ransomware deployment, or lateral movement within the network.
Likely Case
Local privilege escalation or application compromise leading to data loss, system instability, and potential foothold for further attacks.
If Mitigated
Application crash or denial of service if exploit attempts are blocked by security controls.
🎯 Exploit Status
Exploitation requires user interaction but is technically straightforward once a malicious file is opened. ZDI-CAN-24977 reference suggests detailed analysis exists.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.zerodayinitiative.com/advisories/ZDI-24-1735/
Restart Required: No
Instructions:
Check Ashlar-Vellum website for security updates. Apply any available patches for Graphite software. No specific patch version information provided in available references.
🔧 Temporary Workarounds
Block VC6 file extensions
allPrevent opening of VC6 files at the system or email gateway level
User awareness training
allTrain users not to open VC6 files from untrusted sources
🧯 If You Can't Patch
- Implement application whitelisting to prevent unauthorized execution
- Use endpoint protection with memory protection and exploit prevention capabilities
🔍 How to Verify
Check if Vulnerable:
Check installed version of Ashlar-Vellum Graphite against vendor security advisoriesCheck Version:
Check via Windows Programs and Features or application About dialogVerify Fix Applied:
Verify patch installation and test with known safe VC6 files📡 Detection & Monitoring
Log Indicators:
- Application crashes when opening VC6 files
- Unusual process creation from Graphite executable
Network Indicators:
- Downloads of VC6 files from untrusted sources
- Outbound connections after opening VC6 files
SIEM Query:
Process creation where parent_process contains 'graphite' AND (process contains 'cmd' OR process contains 'powershell')