CVE-2018-12667
📋 TL;DR
This CVE describes an improper authentication vulnerability in SV3C HD Camera L-SERIES firmware that allows attackers to access back-end CGI scripts without valid session credentials. This enables reading and modifying camera configuration settings. All users of affected camera models with vulnerable firmware versions are impacted.
💻 Affected Systems
- SV3C HD Camera L-SERIES
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of camera system allowing configuration changes, potential access to video feeds, and use as pivot point into internal networks.
Likely Case
Unauthorized access to camera configuration, modification of settings, and potential disruption of surveillance operations.
If Mitigated
Limited impact if cameras are isolated on separate network segments with strict firewall rules preventing external access.
🎯 Exploit Status
The vulnerability allows direct access to CGI scripts without authentication, making exploitation trivial for attackers with network access.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: No vendor advisory found in provided references
Restart Required: No
Instructions:
No official patch available. Contact SV3C for updated firmware or replace affected devices.
🔧 Temporary Workarounds
Network Segmentation
allIsolate cameras on separate VLAN with strict firewall rules preventing external and unnecessary internal access.
Access Control Lists
allImplement network ACLs to restrict access to camera management interfaces to authorized IP addresses only.
🧯 If You Can't Patch
- Remove cameras from internet-facing networks immediately
- Implement strict network segmentation and monitor for unauthorized access attempts
🔍 How to Verify
Check if Vulnerable:
Check firmware version via camera web interface or attempt to access CGI scripts without authentication (e.g., /cgi-bin/ scripts).Check Version:
Check camera web interface under System Information or Settings for firmware version.Verify Fix Applied:
Verify updated firmware version and test that CGI scripts require proper authentication.📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to CGI scripts
- Configuration changes from unexpected sources
Network Indicators:
- HTTP requests to camera CGI scripts without preceding authentication requests
- Unusual traffic patterns to camera management ports
SIEM Query:
source_ip="camera_ip" AND (uri="/cgi-bin/*" OR uri CONTAINS ".cgi") AND NOT (user_agent CONTAINS "browser_name" OR referer="login_page")