CVE-2021-47818
📋 TL;DR
DupTerminator 1.4.5639.37199 contains a denial of service vulnerability where attackers can crash the application by inputting a long string (8000 repeated characters) in the Excluded text box. This affects all users running the vulnerable version on Windows 10 systems.
💻 Affected Systems
- DupTerminator
⚠️ 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
Complete application crash requiring manual restart, potentially disrupting file deduplication operations and causing data processing delays.
Likely Case
Application becomes unresponsive and crashes, requiring user intervention to restart the program.
If Mitigated
Application remains functional with proper input validation preventing the crash.
🎯 Exploit Status
Exploit requires local access to the application interface; payload of 8000 repeated characters triggers the crash.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Consider alternative software or implement workarounds.
🔧 Temporary Workarounds
Input Validation Restriction
windowsLimit character input length in the Excluded text box to prevent buffer overflow.
Application Sandboxing
windowsRun DupTerminator in a restricted environment to limit impact of crashes.
🧯 If You Can't Patch
- Restrict user access to DupTerminator to trusted personnel only.
- Monitor application logs for unusual input patterns or repeated crashes.
🔍 How to Verify
Check if Vulnerable:
Check DupTerminator version in Help > About menu; if version is 1.4.5639.37199, it is vulnerable.Check Version:
Not applicable - check via application GUI.Verify Fix Applied:
Test by inputting 8000 repeated characters in the Excluded text box; if application doesn't crash, fix may be effective.📡 Detection & Monitoring
Log Indicators:
- Application crash logs
- Windows Event Viewer entries for application failures
Network Indicators:
- None - local application only
SIEM Query:
EventID:1000 OR EventID:1001 AND ProcessName:'DupTerminator.exe'