CVE-2022-24971
📋 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, enabling out-of-bounds reads that can lead to code execution. Users of Foxit PDF Reader 11.1.0.52543 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 actors deliver weaponized PDFs via phishing campaigns, executing malware payloads when users open the documents.
If Mitigated
Limited impact with proper endpoint protection, application sandboxing, and user awareness training preventing successful exploitation.
🎯 Exploit Status
Exploitation requires user interaction (opening malicious file) but is otherwise straightforward given the public vulnerability details.
🛠️ 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. Open Foxit PDF Reader
2. Go to Help > Check for Updates
3. Follow prompts to install latest version
4. Restart application after update
🔧 Temporary Workarounds
Disable JPEG2000 image rendering
allPrevent parsing of JPEG2000 images in PDF files
Not applicable - configuration setting in Foxit preferences
Use alternative PDF viewer
allTemporarily switch to a different PDF reader application
🧯 If You Can't Patch
- Implement application whitelisting to block Foxit PDF Reader execution
- Deploy endpoint detection and response (EDR) with behavioral monitoring for PDF file execution
🔍 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:
On Windows: wmic product where name="Foxit PDF Reader" get versionVerify Fix Applied:
Verify version is 11.1.1 or later in Help > About after update.📡 Detection & Monitoring
Log Indicators:
- Foxit PDF Reader crash logs with memory access violations
- Unexpected child processes spawned from Foxit PDF Reader
Network Indicators:
- Outbound connections from Foxit PDF Reader to suspicious domains
- DNS requests for known malware C2 infrastructure
SIEM Query:
process_name:"FoxitPDFReader.exe" AND (event_id:1000 OR event_id:1001) AND exception_code:0xc0000005