CVE-2023-44397
📋 TL;DR
CloudExplorer Lite versions before 1.4.1 contain an authentication bypass vulnerability in the gateway filter. Attackers can access protected API endpoints without proper authorization by using paths starting with 'matching/API/'. This affects all deployments using vulnerable versions of this cloud management platform.
💻 Affected Systems
- CloudExplorer Lite
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of cloud management platform allowing unauthorized access to all managed cloud resources, configuration changes, data exfiltration, and potential lateral movement to connected cloud environments.
Likely Case
Unauthorized access to sensitive cloud management functions, exposure of cloud credentials and configurations, and potential privilege escalation within the platform.
If Mitigated
Limited impact with proper network segmentation and API gateway protections, but still represents a significant authentication bypass vulnerability.
🎯 Exploit Status
The vulnerability involves simple path manipulation to bypass authentication filters, making exploitation straightforward for attackers who discover the issue.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.4.1
Vendor Advisory: https://github.com/CloudExplorer-Dev/CloudExplorer-Lite/security/advisories/GHSA-fqxr-7g94-vrfj
Restart Required: Yes
Instructions:
1. Backup current configuration and data. 2. Stop CloudExplorer Lite service. 3. Update to version 1.4.1 using package manager or manual installation. 4. Restart CloudExplorer Lite service. 5. Verify functionality and monitor logs.
🔧 Temporary Workarounds
Web Application Firewall Rule
allBlock requests containing 'matching/API/' in the URL path at the WAF or reverse proxy level
# Example nginx config: location ~* /matching/API/ { deny all; }
# Example Apache config: <LocationMatch "^/matching/API/"> Require all denied </LocationMatch>
Network Access Control
linuxRestrict access to CloudExplorer Lite API endpoints to trusted IP addresses only
# Example iptables: iptables -A INPUT -p tcp --dport [CLOUDEXPLORER_PORT] -s [TRUSTED_IP] -j ACCEPT
iptables -A INPUT -p tcp --dport [CLOUDEXPLORER_PORT] -j DROP
🧯 If You Can't Patch
- Implement strict network segmentation to isolate CloudExplorer Lite from internet and untrusted networks
- Deploy a web application firewall with rules to detect and block authentication bypass attempts
🔍 How to Verify
Check if Vulnerable:
Check if CloudExplorer Lite version is below 1.4.1 and test if API endpoints can be accessed via paths starting with 'matching/API/'Check Version:
Check the application version in the web interface or configuration files, or run: grep -i version /path/to/cloudexplorer/config/filesVerify Fix Applied:
After updating to 1.4.1, verify that API endpoints cannot be accessed via 'matching/API/' paths and normal authentication works correctly📡 Detection & Monitoring
Log Indicators:
- Unusual API access patterns with 'matching/API/' in URLs
- Authentication failures followed by successful API calls
- Access to sensitive endpoints from unexpected sources
Network Indicators:
- HTTP requests containing 'matching/API/' in the path
- Unusual API call sequences bypassing normal authentication flows
SIEM Query:
web_access_logs WHERE url_path CONTAINS 'matching/API/' AND response_code = 200