CVE-2024-48294
📋 TL;DR
A NULL pointer dereference vulnerability in Wondershare PDF Reader's libPdfCore.dll component allows attackers to cause a Denial of Service (DoS) by tricking users into opening a specially crafted PDF file. This affects users running Wondershare PDF Reader version 1.0.9.2544 on Windows systems. The vulnerability crashes the application but does not allow arbitrary code execution.
💻 Affected Systems
- Wondershare PDF Reader
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Application crashes when processing malicious PDF, causing loss of unsaved work and temporary disruption of PDF viewing capabilities.
Likely Case
Targeted DoS attacks against specific users by sending crafted PDFs via email or web links, resulting in application crashes.
If Mitigated
With proper controls, impact is limited to temporary application crashes without data loss or system compromise.
🎯 Exploit Status
Exploitation requires user interaction to open malicious PDF; no authentication needed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
Check Wondershare website for updated version; uninstall vulnerable version and install latest available version.
🔧 Temporary Workarounds
Disable PDF Reader as default handler
windowsChange default PDF handler to alternative PDF reader to prevent automatic opening in vulnerable application.
Control Panel > Default Programs > Set Default Programs > Select alternative PDF reader
User awareness training
allTrain users to avoid opening PDFs from untrusted sources and verify file integrity.
🧯 If You Can't Patch
- Uninstall Wondershare PDF Reader and use alternative PDF reader software
- Implement application whitelisting to block execution of vulnerable version
🔍 How to Verify
Check if Vulnerable:
Check Help > About in Wondershare PDF Reader for version number; if version is 1.0.9.2544, system is vulnerable.Check Version:
Not applicable - check via application GUI Help > About menuVerify Fix Applied:
Verify installed version is newer than 1.0.9.2544 or application has been removed.📡 Detection & Monitoring
Log Indicators:
- Application crash logs from Wondershare PDF Reader
- Windows Event Logs showing application faults
Network Indicators:
- Unusual PDF file downloads from external sources
- Email attachments with PDF extensions
SIEM Query:
EventID=1000 AND Source='Application Error' AND ProcessName='Wondershare PDF Reader.exe'