CVE-2018-5724

This vulnerability is like leaving the camera’s “settings back door” unlocked. Anyone who can reach the camera on the network may be able to copy its configuration file and upload a changed one—potentially turning off protections or redirecting what the camera does. In practice, this can lead to loss of reliable surveillance and the attacker effectively controlling the camera.

This matters if you use or manage MASTER IP CAMERA 01 devices running firmware 3.3.4.2103. It’s a network issue, and the findings state there’s no login required, with no user action needed.

The risk applies when the camera is reachable from a network the attacker can access (the findings specify network access to the device; the default configuration is reachable).

This is urgent enough to act on now because an attacker only needs network access to the camera and no login, and public exploits are available. However, it is not listed in the CISA KEV catalog, so widespread, confirmed targeting is not established in the provided findings—hence an AMBER priority rather than the highest emergency level.

1. Inventory and verify exposure

   • Identify all MASTER IP CAMERA 01 devices you operate.
   • For each device, check the firmware version and confirm whether it is exactly 3.3.4.2103.

2. Determine whether it’s reachable to attackers

   • From outside your local network (or from an “untrusted” segment), test whether the camera can be reached.
   • From your internal network, identify whether the camera is accessible from guest Wi‑Fi, partner networks, or any VLANs you don’t fully control.
   • The findings indicate the device is reachable in default configuration and requires no authentication.

3. Remediate immediately (workaround while you plan the fix)

   • Block inbound access to the camera from the internet.
   • Restrict access so only trusted systems (your NVR/management PC or a dedicated admin host) can reach it on the required ports.
   • If your environment supports it, place the cameras on a dedicated network segment that is not reachable from general employee/guest networks.

4. Get the vendor-supported fix

   • The provided patch info does not include a specific fixed firmware version; it instead references vendor remediation guidance to limit use of the device. Contact the vendor/your support channel for the exact safe firmware version or the approved configuration changes.
   • When a fixed version is provided, upgrade all affected 3.3.4.2103 devices according to vendor instructions.

5. Confirm after changes

   • Re-check that the camera is no longer reachable from untrusted networks.
   • Confirm the firmware version after any update.

6. What to monitor

   • Look for unusual connection attempts to the camera from networks you don’t expect.
   • If you have device/system logs, review access to configuration-related endpoints (the issue is demonstrated via restore.cgi) and any sudden configuration changes.

Severity and verdict: The provided CVSS indicates a critical-impact scenario (steal/alter settings and potentially full control), and the overall traffic-light priority is AMBER.

Weakness type: CWE-434 (Unrestricted Upload of File with Dangerous Type / related improper access control around configuration handling).

Attack mechanism: The restore.cgi functionality allows unauthenticated configuration download and upload. The findings state authentication is not required, no user interaction is needed, and default configuration is reachable.

Exploitation status: Public exploit(s) are available (3 known). KEV does not list this issue, so confirmed large-scale exploitation is not indicated by KEV in the provided findings.

EPSS: A predicted likelihood was provided (trend falling), but per the rules this number is not repeated in the public owner-facing sections when KEV/news confirmation is not present.

Operational takeaway: If an attacker can reach the camera over the network, they can copy and replace its configuration without logging in, which can lead to surveillance failure or attacker control of the device’s behavior.