CVE-2018-19982

low-risk

Published 2018-12-09

An issue was discovered on KT MC01507L Z-Wave S0 devices. It occurs because HPKP is not implemented. The communication architecture is APP > Server > Controller (HUB) > Node (products which are controlled by HUB). The prerequisite is that the attacker is on the same network as the target HUB, and can use IP Changer to change destination IP addresses (of all packets whose destination IP address is Server) to a proxy-server IP address. This allows sniffing of cleartext between Server and Controller. The cleartext command data is transmitted to Controller using the proxy server's fake certificate, and it is able to control each Node of the HUB. Also, by operating HUB in Z-Wave Pairing Mode, it is possible to obtain the Z-Wave network key.

Do I need to act?

0.05% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 5.3/10 Medium

ADJACENT_NETWORK / HIGH complexity

Affected Products (1)

Kt Mc01507L Z-Wave S0 Firmware

Affected Vendors

Powermanager

References (2)

Third Party Advisory https://github.com/min1233/CVE/blob/master/1

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low-risk

Severity 14/34 · Moderate

Exploitability 0/34 · Minimal

Exposure 5/34 · Minimal