CVE-2025-2671
📋 TL;DR
This critical vulnerability in Yue Lao Blind Box software allows remote attackers to upload arbitrary files without restrictions via the base64image function in Upload.php. This affects all users running versions up to 4.0 of the application. Attackers can exploit this to upload malicious files and potentially execute arbitrary code on the server.
💻 Affected Systems
- Yue Lao Blind Box (月老盲盒)
⚠️ 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
Remote code execution leading to complete system compromise, data theft, and lateral movement within the network
Likely Case
Webshell deployment allowing persistent access, data exfiltration, and further exploitation of the server
If Mitigated
File uploads blocked or properly validated, limiting impact to denial of service if upload attempts are made
🎯 Exploit Status
Exploit details have been publicly disclosed and the vulnerability is easy to exploit with basic web attack tools
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Check vendor website for updates or apply workarounds.
🔧 Temporary Workarounds
Disable file upload functionality
linuxTemporarily disable the vulnerable upload endpoint to prevent exploitation
# Rename or remove the vulnerable file
mv /path/to/app/controller/Upload.php /path/to/app/controller/Upload.php.disabled
# Or modify web server configuration to block access to the endpoint
Implement file upload validation
allAdd server-side validation to restrict file types, sizes, and names
# Add validation in Upload.php before processing uploads
# Example: Validate file extension, MIME type, and size limits
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block malicious file upload patterns
- Restrict network access to the application and monitor for suspicious upload attempts
🔍 How to Verify
Check if Vulnerable:
Check if Upload.php exists in /app/controller/ directory and contains the vulnerable base64image function without proper file validationCheck Version:
# Check application version in configuration files or admin panel
cat /path/to/application/config/version.txtVerify Fix Applied:
Verify that file uploads are properly validated or disabled, and test with controlled malicious upload attempts📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to /app/controller/Upload.php
- Large base64 encoded data in POST requests
- Files with suspicious extensions (.php, .jsp, .asp) being uploaded
Network Indicators:
- HTTP POST requests to Upload.php endpoint with base64 encoded data
- Unusual outbound connections from the server after uploads
SIEM Query:
source="web_server" AND (uri="/app/controller/Upload.php" OR uri LIKE "%/Upload.php") AND method="POST" AND size_bytes > 1000000