CVE-2022-24359
📋 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 how Doc objects are handled without proper validation, 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 with attacker gaining full control of the affected system, data theft, ransomware deployment, or lateral movement within the network.
Likely Case
Malware installation, credential theft, or system disruption through malicious PDF files delivered via phishing emails or compromised websites.
If Mitigated
Limited impact with proper application sandboxing, restricted user privileges, and network segmentation preventing lateral movement.
🎯 Exploit Status
Exploitation requires user interaction but is technically straightforward once malicious content is delivered. ZDI-CAN-15702 indicates active research.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 11.1.1 or 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 11.1.1 or higher.
🔧 Temporary Workarounds
Disable JavaScript in Foxit
windowsPrevents JavaScript execution which may be used in exploitation chain
Open Foxit Reader > File > Preferences > JavaScript > Uncheck 'Enable JavaScript'
Use Protected View
windowsOpen PDFs in restricted mode to limit potential damage
Open Foxit Reader > File > Preferences > Trust Manager > Check 'Enable Safe Reading Mode'
🧯 If You Can't Patch
- Restrict PDF file handling to alternative PDF readers that are patched
- Implement application whitelisting to block Foxit Reader execution
🔍 How to Verify
Check if Vulnerable:
Check Foxit Reader version: Open Foxit > Help > About Foxit Reader. If version is 11.1.0.52543 or earlier, system is vulnerable.Check Version:
wmic product where name="Foxit Reader" get versionVerify Fix Applied:
Verify version is 11.1.1 or higher in Help > About Foxit Reader.📡 Detection & Monitoring
Log Indicators:
- Process creation events for unexpected child processes from FoxitReader.exe
- Windows Event Logs showing application crashes from Foxit Reader
Network Indicators:
- Outbound connections from Foxit Reader process to suspicious IPs
- DNS requests for known malicious domains following PDF opening
SIEM Query:
process_name="FoxitReader.exe" AND (parent_process="explorer.exe" OR child_process_count>3)