CVE-2023-46694
📋 TL;DR
CVE-2023-46694 is an arbitrary file upload vulnerability in Vtenext 21.02 that allows authenticated attackers to upload malicious files through the Ckeditor file manager. This can lead to remote code execution on affected systems. Organizations using Vtenext 21.02 are at risk.
💻 Affected Systems
- Vtenext
⚠️ 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
Full system compromise through remote code execution, data exfiltration, and lateral movement within the network.
Likely Case
Unauthorized file upload leading to web shell deployment and limited command execution within the application context.
If Mitigated
File upload attempts are blocked or logged, preventing successful exploitation.
🎯 Exploit Status
Exploit requires authenticated access but is straightforward to execute once credentials are obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available or implementing workarounds.
🔧 Temporary Workarounds
Restrict Ckeditor File Manager Access
allDisable or restrict access to the vulnerable Ckeditor file manager functionality.
# Modify application configuration to disable Ckeditor file uploads
# Add authentication checks to Ckeditor endpoints
Implement File Upload Restrictions
allConfigure web server or application to block uploads of executable file types.
# Apache: Add to .htaccess
<FilesMatch "\.(php|phtml|php3|php4|php5|pl|py|jsp|asp|sh|cgi)$">
Order Allow,Deny
Deny from all
</FilesMatch>
# Nginx: Add to server block
location ~ \.(php|phtml|php3|php4|php5|pl|py|jsp|asp|sh|cgi)$ {
deny all;
}
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Vtenext instances from critical systems.
- Enable detailed logging and monitoring of file upload activities and Ckeditor access.
🔍 How to Verify
Check if Vulnerable:
Check if Vtenext version is 21.02 and test authenticated file upload via Ckeditor file manager.Check Version:
# Check Vtenext version in application interface or configuration filesVerify Fix Applied:
Test if file upload restrictions are working by attempting to upload restricted file types.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads via Ckeditor endpoints
- Multiple failed authentication attempts followed by successful login
Network Indicators:
- HTTP POST requests to Ckeditor upload endpoints with unusual file extensions
- Outbound connections from Vtenext server to unknown IPs
SIEM Query:
source="vtenext" AND (url="*ckeditor*" AND method="POST") AND (file_extension="php" OR file_extension="jsp" OR file_extension="asp")