CVE-2024-9248
📋 TL;DR
This vulnerability in Foxit PDF Reader allows remote attackers to execute arbitrary code by tricking users into opening malicious PDF files. The flaw exists in PDF parsing where improper data validation enables out-of-bounds writes. 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 with attacker gaining full control of the victim's computer, data theft, ransomware deployment, and lateral movement within networks.
Likely Case
Malware installation leading to data exfiltration, credential theft, and persistence mechanisms being established on the compromised system.
If Mitigated
Limited impact with application crash or denial of service if exploit fails or security controls block execution.
🎯 Exploit Status
Exploitation requires user interaction but is straightforward once malicious PDF is opened. ZDI has confirmed the vulnerability.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2024.3 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 version 2024.3 or later. 4. Restart the application.
🔧 Temporary Workarounds
Disable JavaScript in Foxit
allPrevents JavaScript-based exploitation vectors
Open Foxit > File > Preferences > JavaScript > Uncheck 'Enable JavaScript'
Use Protected View
allOpens PDFs in sandboxed mode
Open Foxit > File > Preferences > Trust Manager > Check 'Enable Safe Reading Mode'
🧯 If You Can't Patch
- Block PDF files from untrusted sources at email gateways and web proxies
- Use application whitelisting to prevent unauthorized executables from running
🔍 How to Verify
Check if Vulnerable:
Check Foxit version: Open Foxit > Help > About Foxit Reader. If version is below 2024.3, you are vulnerable.Check Version:
On Windows: wmic product where name="Foxit Reader" get versionVerify Fix Applied:
Confirm version is 2024.3 or higher in Help > About Foxit Reader.📡 Detection & Monitoring
Log Indicators:
- Foxit Reader crash logs
- Unexpected child processes spawned from Foxit
- Memory access violation events
Network Indicators:
- Outbound connections from Foxit to unknown IPs
- DNS requests for suspicious domains after PDF opening
SIEM Query:
process_name:"FoxitReader.exe" AND (event_id:1000 OR event_id:1001) OR parent_process:"FoxitReader.exe" AND process_name NOT IN ("explorer.exe", "svchost.exe")