CVE-2022-37384
📋 TL;DR
This vulnerability in Foxit PDF Reader allows remote attackers to execute arbitrary code by tricking users into opening malicious PDF files or visiting malicious web pages. The flaw exists in the delay method where object existence isn't validated before operations, enabling code execution in the current process context. Users of affected Foxit PDF Reader versions are at risk.
💻 Affected Systems
- Foxit PDF Reader
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise via arbitrary code execution with user privileges, potentially leading to data theft, ransomware deployment, or lateral movement within networks.
Likely Case
Malicious actors deliver malware or ransomware through phishing emails with malicious PDF attachments, compromising individual workstations.
If Mitigated
Limited impact with proper application sandboxing, least privilege execution, and network segmentation preventing lateral movement.
🎯 Exploit Status
Exploitation requires user interaction but is straightforward once malicious content is delivered. ZDI-CAN-17327 reference suggests detailed analysis exists.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 11.2.2 and later
Vendor Advisory: https://www.foxit.com/support/security-bulletins.html
Restart Required: Yes
Instructions:
1. Download latest Foxit PDF Reader from official website. 2. Run installer. 3. Restart system if prompted. 4. Verify version is 11.2.2 or higher.
🔧 Temporary Workarounds
Disable JavaScript in Foxit Reader
allPrevents exploitation by disabling JavaScript execution which is required for this vulnerability
Open Foxit Reader > File > Preferences > JavaScript > Uncheck 'Enable JavaScript'
Use Alternative PDF Viewer
allTemporarily switch to a different PDF reader while waiting for patch deployment
🧯 If You Can't Patch
- Implement application whitelisting to block unauthorized PDF readers
- Deploy network segmentation to isolate vulnerable systems and prevent lateral movement
🔍 How to Verify
Check if Vulnerable:
Check Foxit Reader version: Open Foxit Reader > Help > About Foxit Reader. If version is 11.2.1.53537 or earlier, system is vulnerable.Check Version:
On Windows: wmic product where name="Foxit Reader" get versionVerify Fix Applied:
Verify version is 11.2.2 or higher in Help > About Foxit Reader. Test with known safe PDF files to ensure functionality.📡 Detection & Monitoring
Log Indicators:
- Unusual process creation from Foxit Reader (foxitreader.exe)
- Multiple PDF file openings from email attachments
- Crash logs from Foxit Reader with memory access violations
Network Indicators:
- Outbound connections from Foxit Reader process to unknown IPs
- DNS requests for suspicious domains following PDF file access
SIEM Query:
process_name="foxitreader.exe" AND (parent_process="outlook.exe" OR parent_process="chrome.exe") AND process_command_line CONTAINS "*.pdf"