CVE-2024-30357
📋 TL;DR
This vulnerability in Foxit PDF Reader allows attackers to execute arbitrary code by tricking users into opening malicious PDF files. The flaw exists in how the software handles AcroForm annotations, leading to type confusion that can be exploited for remote code execution. 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 the same privileges as the current user, potentially leading to data theft, ransomware deployment, or lateral movement within the network.
Likely Case
Malware installation or data exfiltration from the compromised system, with the attacker operating in the context of the current user's permissions.
If Mitigated
Limited impact due to sandboxing, application hardening, or restricted user privileges preventing full system compromise.
🎯 Exploit Status
Exploitation requires user interaction (opening malicious PDF). Type confusion vulnerabilities are often reliable for exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2024.1.0.23997 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 2024.1.0.23997 or later. 4. Restart the application.
🔧 Temporary Workarounds
Disable JavaScript in Foxit PDF Reader
windowsPrevents exploitation vectors that rely on JavaScript execution
Open Foxit PDF Reader > File > Preferences > Security > Uncheck 'Enable JavaScript'
Use Protected View
windowsOpens PDFs in restricted mode to limit potential damage
Open Foxit PDF Reader > File > Preferences > General > Check 'Open cross-domain PDF files in Protected View'
🧯 If You Can't Patch
- Restrict PDF file handling to alternative PDF readers that are not vulnerable
- Implement application whitelisting to prevent unauthorized code execution
🔍 How to Verify
Check if Vulnerable:
Check Foxit PDF Reader version in Help > About. If version is below 2024.1.0.23997, system is vulnerable.Check Version:
wmic product where name='Foxit Reader' get versionVerify Fix Applied:
Confirm version is 2024.1.0.23997 or higher in Help > About after update.📡 Detection & Monitoring
Log Indicators:
- Process creation from Foxit Reader with unusual command lines
- Network connections initiated by Foxit Reader process
Network Indicators:
- Outbound connections from Foxit Reader to unknown IPs
- DNS requests for suspicious domains from Foxit process
SIEM Query:
process_name='FoxitReader.exe' AND (parent_process!='explorer.exe' OR command_line CONTAINS 'powershell' OR command_line CONTAINS 'cmd')