CVE-2020-9057 Weak cryptography in 100 series
Attackers within radio range can control or disrupt Z-Wave devices using legacy chipsets lacking encryption support.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-9057?
CVE-2020-9057 is a high-severity vulnerability in Linear 100 series, published on 7 Jan 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Z-Wave devices based on Silicon Labs 100, 200, and 300 series chipsets do not support encryption, allowing an attacker within radio range to take control of or cause a denial of service to a vulnerable device. An attacker can also capture and replay Z-Wave traffic. Firmware upgrades cannot directly address this vulnerability as it is an issue with the Z-Wave specification for these legacy chipsets. One way to protect against this vulnerability is to use 500 or 700 series chipsets that support Security 2 (S2) encryption. As examples, the Linear WADWAZ-1 version 3.43 and WAPIRZ-1 version 3.43 (with 300 series chipsets) are vulnerable.
Weakness: CWE-311
Which versions are affected by CVE-2020-9057?
It affects 5 products.
Products include Linear Wadwaz-1, Linear Wapirz-1, Silabs 100 Series Firmware, Silabs 200 Series Firmware, Silabs 300 Series Firmware.
How do I fix CVE-2020-9057?
No fix has been published for CVE-2020-9057 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-9057 being exploited?
There is no known exploitation of CVE-2020-9057 in the wild and no public exploit code.
Sources
Also known as GHSA-pwj3-5896-6xh2.