CVE-2022-37368
📋 TL;DR
CVE-2022-37368 is an out-of-bounds read vulnerability in PDF-XChange Editor's Doc object handling that allows information disclosure. Attackers can exploit this by tricking users into opening malicious PDF files or visiting malicious web pages. This vulnerability affects users of vulnerable PDF-XChange Editor versions.
💻 Affected Systems
- PDF-XChange Editor
📦 What is this software?
Pdf Xchange Editor by Pdf Xchange
⚠️ Risk & Real-World Impact
Worst Case
Combined with other vulnerabilities, could lead to arbitrary code execution in the context of the current user process, potentially resulting in full system compromise.
Likely Case
Sensitive information disclosure from PDF-XChange Editor's memory space, potentially exposing document contents or system information.
If Mitigated
Limited to information disclosure only, with no code execution possible due to proper sandboxing or additional mitigations.
🎯 Exploit Status
Requires user interaction (opening malicious file). ZDI-CAN-17728 reference suggests detailed research exists.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 9.3.361.0 and later
Vendor Advisory: https://www.tracker-software.com/product/pdf-xchange-editor/history
Restart Required: Yes
Instructions:
1. Download latest version from tracker-software.com 2. Run installer 3. Restart system 4. Verify version is 9.3.361.0 or higher
🔧 Temporary Workarounds
Disable JavaScript in PDF-XChange Editor
windowsPrevents exploitation by disabling JavaScript execution in PDF files
Settings > Preferences > JavaScript > Uncheck 'Enable JavaScript Actions'
Use alternative PDF viewer
windowsTemporarily use different PDF software until patched
🧯 If You Can't Patch
- Restrict PDF file sources to trusted locations only
- Implement application whitelisting to prevent unauthorized PDF execution
🔍 How to Verify
Check if Vulnerable:
Open PDF-XChange Editor, go to Help > About, check if version is below 9.3.361.0Check Version:
Not applicable - check via GUI Help > About menuVerify Fix Applied:
Confirm version is 9.3.361.0 or higher in Help > About dialog📡 Detection & Monitoring
Log Indicators:
- Application crashes of PDF-XChange Editor
- Unusual memory access patterns in application logs
Network Indicators:
- Downloads of PDF files from untrusted sources
- Network connections following PDF file opening
SIEM Query:
EventID=1000 OR EventID=1001 AND ProcessName="PDFXEdit.exe"