CVE-2024-33786
📋 TL;DR
This vulnerability allows attackers to upload arbitrary files to the Zhongcheng Kexin Ticketing Management Platform, potentially leading to remote code execution. Organizations using version 20.04 of this platform are affected. Attackers can compromise the system by uploading malicious files through the web interface.
💻 Affected Systems
- Zhongcheng Kexin Ticketing Management Platform
⚠️ 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 system compromise with attacker gaining full control over the server, data theft, and lateral movement to other systems.
Likely Case
Webshell deployment leading to data exfiltration, credential harvesting, and persistence on the affected system.
If Mitigated
File upload attempts are blocked or quarantined, preventing successful exploitation.
🎯 Exploit Status
The GitHub reference contains technical details that could facilitate exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
Contact the vendor Zhongcheng Kexin for patch availability and installation instructions.
🔧 Temporary Workarounds
Implement File Upload Restrictions
allConfigure web application firewall or server rules to block file uploads to vulnerable endpoints.
# Example for Apache: RewriteRule ^/upload/.*\.(php|jsp|asp|aspx)$ - [F,L]
# Example for Nginx: location ~* \.(php|jsp|asp|aspx)$ { deny all; }
Disable File Upload Functionality
allTemporarily disable the file upload feature in the application if not critical.
# Modify application configuration to remove upload capability
🧯 If You Can't Patch
- Isolate the affected system from the internet and restrict internal network access.
- Implement strict network segmentation and monitor for unusual file upload activities.
🔍 How to Verify
Check if Vulnerable:
Test if you can upload files with dangerous extensions (e.g., .php, .jsp) to the platform's upload endpoint.Check Version:
Check the platform's version in its admin interface or configuration files.Verify Fix Applied:
Verify that file upload attempts with malicious extensions are rejected or sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads with executable extensions
- Multiple failed upload attempts
- POST requests to upload endpoints with suspicious filenames
Network Indicators:
- HTTP POST requests to /upload/* paths with file attachments
- Traffic spikes to upload endpoints
SIEM Query:
source="web_logs" AND (uri_path="/upload" OR method="POST") AND (file_extension="php" OR file_extension="jsp" OR file_extension="asp")