CVE-2024-7722
📋 TL;DR
A use-after-free vulnerability in Foxit PDF Reader's Doc object handling allows remote attackers to disclose sensitive information. Attackers can exploit this by tricking users into opening malicious PDF files or visiting malicious web pages. This affects users of vulnerable Foxit PDF Reader versions.
💻 Affected Systems
- Foxit PDF Reader
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Information disclosure combined with other vulnerabilities could lead to arbitrary code execution in the context of the current user process.
Likely Case
Sensitive information disclosure from memory, potentially exposing credentials, documents, or system information.
If Mitigated
Limited impact with proper sandboxing and memory protection controls in place.
🎯 Exploit Status
Requires user interaction and likely needs chaining with other vulnerabilities for code execution
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Foxit security bulletin for specific patched version
Vendor Advisory: https://www.foxit.com/support/security-bulletins.html
Restart Required: Yes
Instructions:
1. Visit Foxit security bulletins page
2. Download and install latest Foxit PDF Reader version
3. Restart system after installation
🔧 Temporary Workarounds
Disable JavaScript in Foxit PDF Reader
windowsPrevents JavaScript-based exploitation vectors
Open Foxit PDF Reader > File > Preferences > JavaScript > Uncheck 'Enable JavaScript'
Use Protected View
windowsOpen PDFs in protected/sandboxed mode
Ensure 'Protected View' is enabled in Foxit security settings
🧯 If You Can't Patch
- Use alternative PDF readers temporarily
- Block PDF files from untrusted sources at network perimeter
🔍 How to Verify
Check if Vulnerable:
Check Foxit PDF Reader version against vendor advisoryCheck Version:
Open Foxit PDF Reader > Help > About Foxit ReaderVerify Fix Applied:
Verify installed version matches or exceeds patched version from advisory📡 Detection & Monitoring
Log Indicators:
- Multiple crash reports from Foxit Reader
- Unexpected memory access errors in application logs
Network Indicators:
- Downloads of PDF files from suspicious sources
- Network traffic to known malicious domains after PDF opening
SIEM Query:
source="*foxit*" AND (event_type="crash" OR error="access violation")