CVE-2024-33438
📋 TL;DR
This CVE describes a file upload vulnerability in CubeCart e-commerce software that allows authenticated users to upload malicious .phar files, leading to arbitrary code execution. It affects CubeCart installations before version 6.5.5. Attackers with authenticated access can potentially take full control of affected systems.
💻 Affected Systems
- CubeCart
📦 What is this software?
Cubecart by Cubecart
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing remote code execution, data theft, website defacement, and lateral movement within the network.
Likely Case
Unauthorized file upload leading to web shell installation, data exfiltration, and potential privilege escalation.
If Mitigated
Limited impact with proper file upload restrictions and authentication controls in place.
🎯 Exploit Status
Exploit requires authenticated user access; .phar file upload leads to code execution.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.5.5
Vendor Advisory: https://forums.cubecart.com/topic/59046-cubecart-655-released-minor-security-update/
Restart Required: No
Instructions:
1. Backup your CubeCart installation and database. 2. Download CubeCart 6.5.5 from the official repository. 3. Replace all files with the new version. 4. Verify the installation works correctly.
🔧 Temporary Workarounds
File Upload Restriction
allRestrict file uploads to prevent .phar file uploads via web server configuration.
# Apache: Add to .htaccess
<FilesMatch "\.phar$">
Order Allow,Deny
Deny from all
</FilesMatch>
# Nginx: Add to server block
location ~ \.phar$ {
deny all;
}
Authentication Hardening
allImplement strong authentication controls and monitor user upload activities.
🧯 If You Can't Patch
- Implement strict file upload validation to block .phar extensions
- Restrict authenticated user privileges and monitor upload activities
🔍 How to Verify
Check if Vulnerable:
Check CubeCart version in admin panel or by examining the /includes/global.inc.php file for version information.Check Version:
grep -i 'version' /path/to/cubecart/includes/global.inc.phpVerify Fix Applied:
Verify version is 6.5.5 or later in admin panel or configuration files.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads with .phar extension
- Multiple failed upload attempts
- Suspicious POST requests to upload endpoints
Network Indicators:
- Unexpected outbound connections from web server
- Unusual traffic patterns to upload handlers
SIEM Query:
source="web_logs" AND (url="*upload*" AND file_extension=".phar")🔗 References
- https://forums.cubecart.com/topic/59046-cubecart-655-released-minor-security-update/
- https://github.com/cubecart/v6
- https://github.com/cubecart/v6/commit/31a5ec39b0924b2111fbc3aa419bd8c5c3fc1841
- https://github.com/julio-cfa/CVE-2024-33438
- https://forums.cubecart.com/topic/59046-cubecart-655-released-minor-security-update/
- https://github.com/cubecart/v6
- https://github.com/cubecart/v6/commit/31a5ec39b0924b2111fbc3aa419bd8c5c3fc1841
- https://github.com/julio-cfa/CVE-2024-33438
