CVE-2023-53869
📋 TL;DR
WEBIGniter 28.7.23 contains an unrestricted file upload vulnerability that allows authenticated attackers to upload PHP files and execute arbitrary code on the server. This affects all installations running the vulnerable version, requiring only any valid user account for exploitation.
💻 Affected Systems
- WEBIGniter
⚠️ 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 server compromise leading to data theft, lateral movement, ransomware deployment, or complete system takeover.
Likely Case
Attackers gain shell access, install backdoors, steal sensitive data, and use the server for further attacks.
If Mitigated
Limited impact if file uploads are restricted to non-executable types and proper file validation is implemented.
🎯 Exploit Status
Exploit code is publicly available on Exploit-DB and other sources, making this easily weaponizable.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://webigniter.net/
Restart Required: No
Instructions:
Check vendor website for security updates. If no patch is available, implement workarounds immediately.
🔧 Temporary Workarounds
Restrict PHP file uploads
allConfigure web server to block execution of uploaded PHP files
# Add to .htaccess for Apache:
<FilesMatch "\.php$">
Deny from all
</FilesMatch>
# For nginx:
location ~ \.php$ {
deny all;
}
Implement file type validation
allRestrict uploads to specific safe file extensions only
🧯 If You Can't Patch
- Disable file upload functionality entirely in WEBIGniter
- Implement strict WAF rules to block PHP file uploads and execution attempts
🔍 How to Verify
Check if Vulnerable:
Check if running WEBIGniter version 28.7.23 and test if PHP files can be uploaded via media function.Check Version:
Check WEBIGniter configuration files or admin panel for version informationVerify Fix Applied:
Attempt to upload a PHP file after implementing controls - should be blocked or saved without execution capability.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads with .php extension
- Multiple failed upload attempts
- POST requests to media upload endpoints with PHP content
Network Indicators:
- HTTP POST requests with PHP file uploads to media endpoints
- Subsequent requests to uploaded PHP files
SIEM Query:
source="web_server" AND (uri="*upload*" OR uri="*media*") AND (method="POST") AND (user_agent="*" OR file_extension="php")