CVE-2024-57685
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on systems running vulnerable versions of sparkshop by uploading a specially crafted PHAR file. Attackers can achieve remote code execution (RCE) without authentication, potentially taking full control of affected systems. All users of sparkshop v1.1.7 and earlier versions are affected.
💻 Affected Systems
- sparkshop
📦 What is this software?
Sparkshop by Sparkshop
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attackers to execute arbitrary commands, steal data, install malware, pivot to other systems, and maintain persistent access.
Likely Case
Remote code execution leading to web server compromise, data exfiltration, and potential ransomware deployment.
If Mitigated
Limited impact with proper file upload restrictions and PHAR deserialization protections in place.
🎯 Exploit Status
Public proof-of-concept available on GitHub demonstrates exploitation via PHAR file upload leading to deserialization and RCE.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Check for updates from sparkshop developers and apply immediately when released.
🔧 Temporary Workarounds
Disable PHAR file uploads
allBlock PHAR file uploads at web application firewall or application level
Disable PHAR stream wrapper
linuxDisable PHAR stream wrapper in PHP configuration to prevent deserialization
php -d phar.readonly=1
🧯 If You Can't Patch
- Implement strict file upload validation to reject PHAR files
- Deploy WAF rules to block PHAR file uploads and deserialization attempts
🔍 How to Verify
Check if Vulnerable:
Check sparkshop version - if v1.1.7 or earlier, system is vulnerableCheck Version:
Check application configuration files or admin panel for version informationVerify Fix Applied:
Verify version is updated beyond v1.1.7 when patch becomes available📡 Detection & Monitoring
Log Indicators:
- PHAR file upload attempts
- Unusual file uploads with .phar extension
- Deserialization errors in PHP logs
Network Indicators:
- HTTP POST requests with PHAR file uploads
- Unusual outbound connections after file upload
SIEM Query:
source="web_logs" AND (uri_path="*upload*" AND file_extension="phar")