CVE-2024-9743
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code by tricking users into opening malicious PDF files in Tungsten Automation Power PDF. Attackers can exploit a heap-based buffer overflow during PDF parsing to gain control of the application process. All users running vulnerable versions of Power PDF are affected.
💻 Affected Systems
- Tungsten Automation Power PDF
📦 What is this software?
Power Pdf by Tungstenautomation
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining the same privileges as the PDF application user, potentially leading to data theft, ransomware deployment, or lateral movement.
Likely Case
Remote code execution in the context of the PDF application, allowing file system access, credential harvesting, and malware installation.
If Mitigated
Application crash or denial of service if exploit fails, with potential data loss from corrupted PDF files.
🎯 Exploit Status
Exploit requires user to open malicious PDF; no authentication needed beyond file access
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Tungsten Automation security advisory for specific version
Vendor Advisory: https://www.tungstenautomation.com/security
Restart Required: Yes
Instructions:
1. Check current Power PDF version
2. Visit Tungsten Automation security advisory page
3. Download and install latest patch
4. Restart system
🔧 Temporary Workarounds
Disable PDF file associations
windowsPrevent Power PDF from automatically opening PDF files
Control Panel > Default Programs > Set Associations > Change .pdf to different viewer
Application control blocking
windowsBlock Power PDF execution via application whitelisting
Using Windows Defender Application Control or third-party solution
🧯 If You Can't Patch
- Implement network segmentation to isolate PDF processing systems
- Deploy endpoint detection and response (EDR) with behavioral monitoring for suspicious PDF parsing
🔍 How to Verify
Check if Vulnerable:
Check Power PDF version against vendor advisory; if pre-patch version, assume vulnerableCheck Version:
Open Power PDF > Help > About or check installed programs in Control PanelVerify Fix Applied:
Verify Power PDF version matches or exceeds patched version from vendor advisory📡 Detection & Monitoring
Log Indicators:
- Power PDF crash logs
- Unusual process spawning from PDF application
- Memory access violation events
Network Indicators:
- Downloads of PDF files from untrusted sources
- Outbound connections from PDF application process
SIEM Query:
process_name:"PowerPDF.exe" AND (event_id:1000 OR event_id:1001) OR process_parent:"PowerPDF.exe"