CVE-2024-22082
📋 TL;DR
Unauthenticated directory listing vulnerability in Elspec G5 digital fault recorder web interface allows attackers to enumerate system directories without credentials. This affects Elspec G5 versions 1.1.4.15 and earlier, potentially exposing sensitive system information to unauthorized users.
💻 Affected Systems
- Elspec G5 digital fault recorder
📦 What is this software?
G5dfr Firmware by Elspec Ltd
⚠️ Risk & Real-World Impact
Worst Case
Attackers map the entire filesystem, discover sensitive configuration files, credentials, or other critical system information that could lead to further exploitation or system compromise.
Likely Case
Attackers gain reconnaissance information about the system structure, installed components, and potential attack vectors for follow-on attacks.
If Mitigated
Limited information disclosure with no direct system compromise, though it still provides attackers with valuable reconnaissance data.
🎯 Exploit Status
Simple HTTP requests to enumerate directories without authentication
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 1.1.4.15
Vendor Advisory: https://www.elspec-ltd.com/support/security-advisories/
Restart Required: Yes
Instructions:
1. Contact Elspec support for patched firmware. 2. Backup current configuration. 3. Apply firmware update following vendor instructions. 4. Verify web interface functionality post-update.
🔧 Temporary Workarounds
Network Access Control
allRestrict network access to the web interface using firewall rules
Disable Web Interface
allTemporarily disable the web interface if not required for operations
🧯 If You Can't Patch
- Implement strict network segmentation to isolate the device from untrusted networks
- Deploy network monitoring to detect directory enumeration attempts
🔍 How to Verify
Check if Vulnerable:
Attempt to access directory listing via web interface without authentication using tools like curl or browserCheck Version:
Check device web interface or console for firmware version informationVerify Fix Applied:
Verify directory listing requests return proper authentication errors or are blocked📡 Detection & Monitoring
Log Indicators:
- Multiple HTTP GET requests for directory paths without authentication
- Unusual access patterns to web interface
Network Indicators:
- HTTP requests for common directory paths (/, /etc/, /var/, etc.) without authentication headers
SIEM Query:
source="webserver" AND (uri="/" OR uri CONTAINS "/.") AND status=200 AND NOT auth_present