CVE-2024-34919
📋 TL;DR
This vulnerability allows attackers to upload malicious files to the Pisay Online E-Learning System, which can lead to remote code execution. Attackers can take full control of affected systems by uploading crafted files. Organizations using Pisay Online E-Learning System v1.0 are affected.
💻 Affected Systems
- Pisay Online E-Learning System
⚠️ 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 administrative control, data theft, ransomware deployment, and lateral movement to other systems.
Likely Case
Webshell installation leading to persistent backdoor access, data exfiltration, and potential credential harvesting.
If Mitigated
File upload attempts blocked or sanitized, preventing malicious file execution while maintaining legitimate functionality.
🎯 Exploit Status
Arbitrary file upload vulnerabilities are commonly exploited with simple HTTP requests. Public GitHub issues suggest exploit details are available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available, or implement workarounds.
🔧 Temporary Workarounds
File Upload Restriction
allImplement strict file upload validation including file type checking, size limits, and content scanning.
# Add to modstudent/controller.php or application configuration
# Validate file extensions
$allowed_extensions = ['jpg', 'png', 'pdf', 'doc'];
# Validate MIME types
$allowed_mime = ['image/jpeg', 'image/png', 'application/pdf'];
# Set maximum file size
$max_size = 5242880; # 5MB
Web Application Firewall Rules
allConfigure WAF to block suspicious file uploads and PHP file execution attempts.
# Example ModSecurity rule
SecRule FILES "@rx \.(php|phtml|phar|inc)$" \
"id:1001,phase:2,deny,msg:'Blocked malicious file upload'"
# Example nginx rule
location ~* \.(php|phtml|phar)$ {
deny all;
}
🧯 If You Can't Patch
- Disable file upload functionality in modstudent component if not essential
- Implement network segmentation to isolate the vulnerable system from critical assets
🔍 How to Verify
Check if Vulnerable:
Check if Pisay Online E-Learning System v1.0 is installed and review modstudent/controller.php for file upload validation.Check Version:
# Check application version in configuration files or database
# Typically found in config.php or similar configuration filesVerify Fix Applied:
Test file upload functionality with various file types including PHP files to ensure they are rejected or sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to modstudent endpoints
- PHP file uploads with suspicious names
- Multiple failed upload attempts
Network Indicators:
- HTTP POST requests to modstudent/controller.php with file uploads
- Unusual outbound connections after file uploads
SIEM Query:
source="web_server" AND (uri="/modstudent/controller.php" OR uri="*controller.php*") AND method="POST" AND (file_extension="php" OR file_extension="phtml" OR file_extension="phar")