CVE-2024-42777
📋 TL;DR
An unrestricted file upload vulnerability in Kashipara Music Management System v1.0 allows attackers to upload malicious PHP files through the signup functionality. This enables remote code execution on affected systems, potentially compromising the entire server. Organizations using this specific version of the music management system are at risk.
💻 Affected Systems
- Kashipara Music Management System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete server compromise leading to data theft, ransomware deployment, lateral movement to other systems, and persistent backdoor installation.
Likely Case
Webshell deployment allowing unauthorized access, data exfiltration, and further exploitation of the server environment.
If Mitigated
Attackers can upload files but cannot execute them due to proper file validation and server hardening.
🎯 Exploit Status
Exploitation requires only web access to the vulnerable endpoint and ability to upload a PHP file.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
No official patch available. Consider replacing with alternative software or implementing strict file upload controls.
🔧 Temporary Workarounds
Restrict file upload extensions
allConfigure web server to block PHP file uploads at the signup endpoint
# Add to .htaccess for Apache:
<FilesMatch "\.(php|php3|php4|php5|phtml|phar)$">
Order Allow,Deny
Deny from all
</FilesMatch>
# Nginx configuration:
location ~ \.php$ {
deny all;
}
Disable vulnerable endpoint
allBlock access to /music/ajax.php?action=signup
# Apache .htaccess:
RewriteEngine On
RewriteRule ^music/ajax\.php\?action=signup$ - [F,L]
# Nginx:
location ~ /music/ajax\.php\?action=signup$ {
deny all;
}
🧯 If You Can't Patch
- Implement Web Application Firewall (WAF) rules to block PHP file uploads to the signup endpoint
- Move system behind authentication and restrict signup functionality to trusted users only
🔍 How to Verify
Check if Vulnerable:
Attempt to upload a PHP file to /music/ajax.php?action=signup endpoint. If successful without validation, system is vulnerable.Check Version:
Check system documentation or configuration files for version informationVerify Fix Applied:
Test that PHP file uploads to the signup endpoint are rejected with proper error messages.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to /music/ajax.php with action=signup
- PHP file uploads from unexpected IP addresses
- Multiple failed signup attempts followed by successful PHP upload
Network Indicators:
- POST requests to /music/ajax.php?action=signup with PHP file content
- Unusual outbound connections from web server after file upload
SIEM Query:
source="web_server_logs" AND (uri="/music/ajax.php" AND query_string="action=signup") AND (file_extension="php" OR content_type="application/x-php")