CVE-2023-28649
📋 TL;DR
This vulnerability in Snap One OvrC cloud platform allows attackers to impersonate a hub and send device requests to claim already claimed devices. The cloud platform fails to validate if devices are already managed by another user, enabling unauthorized device takeover. All users of the affected OvrC cloud platform are potentially impacted.
💻 Affected Systems
- Snap One OvrC cloud platform
- OvrC Hub devices
📦 What is this software?
Orvc by Snapone
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of managed IoT/automation devices allowing attackers to control security systems, cameras, locks, and other connected devices, potentially leading to physical security breaches, data theft, or denial of service.
Likely Case
Unauthorized access to and control of IoT devices managed through OvrC, enabling surveillance, data collection, or disruption of automation systems.
If Mitigated
Limited impact with proper network segmentation and monitoring, though device management could still be disrupted.
🎯 Exploit Status
The vulnerability requires network access to the OvrC cloud platform but doesn't require authentication to exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to vendor advisory for specific patched versions
Vendor Advisory: https://www.control4.com/docs/product/ovrc-software/release-notes/english/latest/ovrc-software-release-notes-rev-p.pdf
Restart Required: Yes
Instructions:
1. Check vendor advisory for patched versions. 2. Update OvrC cloud platform to latest version. 3. Update all OvrC Hub firmware. 4. Restart affected devices and services.
🔧 Temporary Workarounds
Network Segmentation
allIsolate OvrC Hubs and managed devices on separate network segments to limit attack surface.
Access Control Lists
allImplement strict firewall rules to limit communication to/from OvrC cloud platform.
🧯 If You Can't Patch
- Implement network monitoring for unusual device claiming requests to OvrC cloud endpoints.
- Disable unnecessary device management features and review all connected device permissions.
🔍 How to Verify
Check if Vulnerable:
Check OvrC platform version against vendor advisory. Monitor for unexpected device ownership changes.Check Version:
Check OvrC platform admin interface or vendor documentation for version information.Verify Fix Applied:
Verify platform is updated to patched version and test device claiming functionality with proper validation.📡 Detection & Monitoring
Log Indicators:
- Multiple device claiming requests from same source
- Device ownership changes without user action
- Failed authentication attempts on device management endpoints
Network Indicators:
- Unusual traffic patterns to OvrC cloud API endpoints
- Spoofed hub identification requests
- Device registration requests from unexpected sources
SIEM Query:
source_ip OUTSIDE trusted_range AND destination_port IN (443, other_ovrc_ports) AND http_method = POST AND uri CONTAINS '/device/claim'🔗 References
- https://www.cisa.gov/news-events/ics-advisories/icsa-23-136-01
- https://www.control4.com/docs/product/ovrc-software/release-notes/english/latest/ovrc-software-release-notes-rev-p.pdf
- https://www.cisa.gov/news-events/ics-advisories/icsa-23-136-01
- https://www.control4.com/docs/product/ovrc-software/release-notes/english/latest/ovrc-software-release-notes-rev-p.pdf
