CVE-2024-50660
📋 TL;DR
CVE-2024-50660 is a critical file upload bypass vulnerability in AdPortal 3.0.39 that allows remote attackers to upload malicious files and execute arbitrary code on affected systems. This affects all organizations using AdPortal 3.0.39 for their advertising or content management needs. Successful exploitation could lead to complete system compromise.
💻 Affected Systems
- AdPortal
📦 What is this software?
Adportal by Ipublishmedia
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to full system compromise, data exfiltration, ransomware deployment, and lateral movement across the network.
Likely Case
Attackers upload webshells or malware to gain persistent access, deface websites, or steal sensitive data from the AdPortal system.
If Mitigated
If proper file upload validation and web application firewalls are in place, exploitation attempts would be blocked, limiting impact to failed attack attempts.
🎯 Exploit Status
The vulnerability is in the file upload functionality and requires minimal technical skill to exploit. Public proof-of-concept details are available in the referenced PDF.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: http://adportal.com
Restart Required: No
Instructions:
1. Check vendor website for security updates
2. If patch is available, download and apply following vendor instructions
3. Verify the fix by testing file upload functionality
4. Monitor for any issues post-update
🔧 Temporary Workarounds
Disable File Upload Functionality
allTemporarily disable file upload features in AdPortal to prevent exploitation
# Modify AdPortal configuration to disable uploads
# Check configuration files for upload settings
Implement Web Application Firewall Rules
allBlock malicious file upload attempts at the WAF level
# Example WAF rule to block suspicious uploads
# Configure based on your WAF platform
🧯 If You Can't Patch
- Implement strict file upload validation including file type checking, size limits, and content inspection
- Isolate AdPortal systems from critical network segments and implement network segmentation
🔍 How to Verify
Check if Vulnerable:
Check if running AdPortal version 3.0.39. Attempt to upload a file with malicious extension to test if validation is bypassed.Check Version:
# Check AdPortal version in admin panel or configuration files
# Look for version information in web interface or config filesVerify Fix Applied:
Test file upload functionality with various file types to ensure proper validation is in place. Verify no arbitrary files can be uploaded.📡 Detection & Monitoring
Log Indicators:
- Unusual file upload activity
- Files with suspicious extensions being uploaded
- Webshell or malicious file creation in upload directories
Network Indicators:
- HTTP POST requests to upload endpoints with unusual file types
- Traffic patterns indicating file upload attempts
SIEM Query:
source="adportal_logs" AND (event="file_upload" AND (file_extension="php" OR file_extension="jsp" OR file_extension="asp"))