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Snap One OvrC Cloud (Update A)

Act Now9.1ICS-CERT ICSA-23-136-01May 16, 2023
Attack VectorNetwork
Auth RequiredNone
ComplexityLow
User InteractionNone needed
Summary

OvrC Pro versions prior to 7.3 contain multiple vulnerabilities in authentication, information disclosure, and device claiming mechanisms. Successful exploitation allows an attacker to impersonate and claim devices without authentication, execute arbitrary code on the platform, and disclose device information. Vulnerabilities include insufficient authentication (CWE-290, CWE-306), information exposure (CWE-204, CWE-319), and insecure UPnP configuration (CWE-420, CWE-912). These flaws affect the cloud management platform's core device registration and code execution functions.

What this means
What could happen
An attacker could impersonate legitimate devices, execute arbitrary code on the OvrC Pro platform, and access sensitive information about connected devices. This could allow unauthorized control of building automation and security systems managed through the cloud platform.
Who's at risk
Building automation and security system operators who use Snap One OvrC Pro for cloud-based device management. This includes property managers, integrators, and facilities teams managing HVAC, lighting, access control, and surveillance systems connected through OvrC.
How it could be exploited
An attacker on the network could exploit insufficient authentication or UPnP discovery mechanisms to claim or register unauthorized devices in the OvrC cloud, then execute arbitrary code with the permissions of the OvrC Pro service. The attack requires network access to the device or its cloud endpoint but no valid credentials or user interaction.
Prerequisites
  • Network access to OvrC Pro device or cloud endpoint
  • UPnP enabled (default)
  • No valid credentials required
remotely exploitableno authentication requiredlow complexityhigh CVSS score (9.1)
Exploitability
Low exploit probability (EPSS 0.2%)
Affected products (1)
ProductAffected VersionsFix Status
OvrC Pro: <7.3<7.37.3
Remediation & Mitigation
0/5
Do now
0/1
WORKAROUNDDisable UPnP on OvrC Pro devices
Schedule — requires maintenance window
0/1

Patching may require device reboot — plan for process interruption

HOTFIXUpdate OvrC Pro to version 7.3 or later via automatic cloud update
Long-term hardening
0/3
HARDENINGPlace OvrC Pro and managed devices behind firewalls; block direct internet access
HARDENINGIsolate OvrC Pro cloud management network from business network where feasible
HARDENINGIf remote access required, use VPN with current patches
View full CISA ICS-CERT advisory
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Snap One OvrC Cloud (Update A) | CVSS 9.1 - OTPulse