CVE-2024-30359
📋 TL;DR
This vulnerability in Foxit PDF Reader allows remote attackers to execute arbitrary code by tricking users into opening malicious PDF files containing specially crafted 3D objects in AcroForms. The flaw is an out-of-bounds read that can lead to remote code execution in the context of the current user. All users running vulnerable versions of Foxit PDF Reader are affected.
💻 Affected Systems
- Foxit PDF Reader
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise via remote code execution with user privileges, potentially leading to data theft, ransomware deployment, or lateral movement within networks.
Likely Case
Malicious actor gains code execution on user's workstation, enabling credential theft, data exfiltration, or installation of additional malware.
If Mitigated
Attack fails due to patched software, application sandboxing, or user not opening malicious PDF.
🎯 Exploit Status
Exploitation requires user interaction (opening malicious PDF) but no authentication. ZDI advisory suggests weaponization is likely given the RCE nature.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Foxit security bulletins for specific patched versions
Vendor Advisory: https://www.foxit.com/support/security-bulletins.html
Restart Required: Yes
Instructions:
1. Visit Foxit security bulletins page. 2. Identify latest patched version for your product. 3. Download and install update. 4. Restart system if prompted.
🔧 Temporary Workarounds
Disable JavaScript in Foxit Reader
allDisabling JavaScript may prevent some exploitation vectors, though not guaranteed for all attack methods.
Open Foxit Reader > File > Preferences > JavaScript > Uncheck 'Enable JavaScript'
Use alternative PDF viewer
allTemporarily use a different PDF reader until Foxit is patched.
🧯 If You Can't Patch
- Restrict PDF file opening to trusted sources only via email filtering and web proxy policies.
- Implement application allowlisting to prevent unauthorized PDF readers from executing.
🔍 How to Verify
Check if Vulnerable:
Check Foxit Reader version against vulnerable versions listed in Foxit security bulletins.Check Version:
Open Foxit Reader > Help > About Foxit ReaderVerify Fix Applied:
Verify installed version matches or exceeds patched version from Foxit advisory.📡 Detection & Monitoring
Log Indicators:
- Process creation events from Foxit Reader with unusual command-line arguments
- Crash logs from Foxit Reader processes
Network Indicators:
- Downloads of PDF files from suspicious sources followed by unusual outbound connections
SIEM Query:
Process:foxitreader.exe AND (ParentProcess:explorer.exe OR CommandLine:*pdf*) | stats count by host