CVE-2022-24361
📋 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 JPEG2000 images. The flaw exists in improper data validation during JPEG2000 parsing, leading to memory corruption. All 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 through remote code execution with user privileges, potentially leading to data theft, ransomware deployment, or lateral movement within networks.
Likely Case
Attackers deliver malicious PDFs via phishing emails or compromised websites, executing malware on victim systems when users open the documents.
If Mitigated
With proper patching and security controls, impact is limited to failed exploitation attempts that may cause application crashes but no code execution.
🎯 Exploit Status
Exploitation requires user interaction but no authentication. ZDI published advisory with technical details.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 11.1.1 or later
Vendor Advisory: https://www.foxit.com/support/security-bulletins.html
Restart Required: No
Instructions:
1. Open Foxit PDF Reader. 2. Go to Help > Check for Updates. 3. Follow prompts to install latest version. 4. Alternatively, download and install from Foxit website.
🔧 Temporary Workarounds
Disable JPEG2000 image rendering
windowsPrevent Foxit from processing JPEG2000 images which are rarely used in PDFs
Not applicable - configuration change only
Use alternative PDF reader
allTemporarily switch to a different PDF reader while patching
🧯 If You Can't Patch
- Restrict user permissions to limit potential damage from code execution
- Implement application whitelisting to prevent unauthorized executables from running
🔍 How to Verify
Check if Vulnerable:
Check Foxit PDF Reader version in Help > About. If version is 11.1.0.52543 or earlier, system is vulnerable.Check Version:
Not applicable - check via GUI in Help > AboutVerify Fix Applied:
Verify version is 11.1.1 or later in Help > About. Test with known safe PDF containing JPEG2000 images.📡 Detection & Monitoring
Log Indicators:
- Application crashes of Foxit Reader
- Unusual process creation from Foxit Reader
Network Indicators:
- Downloads of PDF files from suspicious sources
- Outbound connections from Foxit Reader process
SIEM Query:
Process Creation where Parent Process Name contains 'FoxitReader.exe' AND Command Line contains unusual parameters