CVE-2018-19983— Sigma Design Z-Wave S0至S2设备安全漏洞

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An issue was discovered on Sigma Design Z-Wave S0 through S2 devices. An attacker first prepares a Z-Wave frame-transmission program (e.g., Z-Wave PC Controller, OpenZWave, CC1110, etc.). Next, the attacker conducts a DoS attack against the Z-Wave S0 Security version product by continuously sending divided "Nonce Get (0x98 0x81)" frames. The reason for dividing the "Nonce Get" frame is that, in security version S0, when a node receives a "Nonce Get" frame, the node produces a random new nonce and sends it to the Src node of the received "Nonce Get" frame. After the nonce value is generated and transmitted, the node transitions to wait mode. At this time, when "Nonce Get" is received again, the node discards the previous nonce value and generates a random nonce again. Therefore, because the frame is encrypted with previous nonce value, the received normal frame cannot be decrypted.

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Sigma Design Z-Wave S0至S2设备安全漏洞

Sigma Design Z-Wave S0等都是电源管理设备。 Sigma Design Z-Wave S0至S2系列设备中存在安全漏洞。本地攻击者可利用该漏洞导致设备无法解密接收到的正常帧。

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