CVE-2024-50652
📋 TL;DR
A file upload vulnerability in java_shop 1.0 allows attackers to upload arbitrary files by exploiting the avatar function. This could lead to malicious file uploads and potential server compromise. All users running java_shop 1.0 are affected.
💻 Affected Systems
- java_shop
📦 What is this software?
Java Shop by Geeeeeeeek
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or ransomware deployment.
Likely Case
Malicious file upload enabling web shell installation, defacement, or data exfiltration.
If Mitigated
Limited impact with proper file validation and server-side restrictions.
🎯 Exploit Status
Exploit requires authentication but file upload bypass is straightforward.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Consider workarounds or alternative software.
🔧 Temporary Workarounds
Implement file upload restrictions
allAdd server-side validation for file types, extensions, and content.
Disable avatar upload functionality
allTemporarily disable the vulnerable avatar upload feature.
🧯 If You Can't Patch
- Implement web application firewall rules to block suspicious file uploads.
- Restrict upload directory permissions and isolate from web root.
🔍 How to Verify
Check if Vulnerable:
Test avatar upload with malicious file extensions or content.Check Version:
Check application version in configuration or admin panel.Verify Fix Applied:
Verify file validation rejects unauthorized file types and extensions.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to avatar endpoint
- Uploads with suspicious extensions
Network Indicators:
- HTTP POST requests to avatar upload with unusual payloads
SIEM Query:
source="web_logs" AND uri="/avatar/upload" AND (file_extension="php" OR file_extension="jsp")