CVE-2024-8846
📋 TL;DR
This vulnerability in PDF-XChange Editor allows remote attackers to disclose sensitive information by tricking users into opening malicious TIF files. The flaw exists in TIF file parsing where improper data validation enables reading beyond allocated memory boundaries. Users of affected PDF-XChange Editor versions are at risk.
💻 Affected Systems
- PDF-XChange Editor
📦 What is this software?
Pdf Tools by Pdf Xchange
Pdf Xchange Editor by Pdf Xchange
⚠️ Risk & Real-World Impact
Worst Case
Information disclosure combined with other vulnerabilities could lead to arbitrary code execution in the current process context, potentially compromising the entire system.
Likely Case
Sensitive information disclosure from process memory, which could include credentials, session data, or other confidential information.
If Mitigated
Limited information disclosure with no code execution if proper memory protections and sandboxing are in place.
🎯 Exploit Status
Requires user interaction to open malicious file. The vulnerability can be combined with other exploits for code execution.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 10.2.1.385 and later
Vendor Advisory: https://www.tracker-software.com/support/security-advisories
Restart Required: Yes
Instructions:
1. Download latest version from official PDF-XChange Editor website. 2. Run installer. 3. Restart system if prompted. 4. Verify version is 10.2.1.385 or higher.
🔧 Temporary Workarounds
Disable TIF file association
windowsRemove PDF-XChange Editor as default handler for TIF files to prevent automatic opening
Control Panel > Default Programs > Set Default Programs > Select PDF-XChange Editor > Choose defaults for this program > Uncheck .tif/.tiff
Application control blocking
windowsBlock PDF-XChange Editor from opening TIF files via application control policies
🧯 If You Can't Patch
- Implement application whitelisting to prevent execution of PDF-XChange Editor
- Use email/web filtering to block TIF attachments and downloads
🔍 How to Verify
Check if Vulnerable:
Check Help > About in PDF-XChange Editor for version number. Versions below 10.2.1.385 are vulnerable.Check Version:
PDFXEdit.exe /version (if supported) or check Help > About in GUIVerify Fix Applied:
Verify version is 10.2.1.385 or higher in Help > About dialog.📡 Detection & Monitoring
Log Indicators:
- Application crashes when opening TIF files
- Unusual memory access patterns in application logs
Network Indicators:
- Downloads of TIF files from untrusted sources
- Network traffic patterns matching exploit delivery
SIEM Query:
source="PDF-XChange Editor" AND (event_type="crash" OR event_type="exception") AND file_extension="tif"