Vulnerability Details : CVE-2020-9057
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.
Vulnerability category: Denial of service
Products affected by CVE-2020-9057
- cpe:2.3:o:silabs:100_series_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:silabs:200_series_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:silabs:300_series_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:linear:wadwaz-1:3.43:*:*:*:*:*:*:*
- cpe:2.3:o:linear:wapirz-1:3.43:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-9057
0.19%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 56 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-9057
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
8.3
|
HIGH | AV:A/AC:L/Au:N/C:C/I:C/A:C |
6.5
|
10.0
|
NIST | |
8.8
|
HIGH | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST |
CWE ids for CVE-2020-9057
-
The product does not encrypt sensitive or critical information before storage or transmission.Assigned by:
- cret@cert.org (Secondary)
- nvd@nist.gov (Primary)
References for CVE-2020-9057
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https://ieeexplore.ieee.org/document/9663293
Riding the IoT Wave With VFuzz: Discovering Security Flaws in Smart Homes | IEEE Journals & Magazine | IEEE XploreBroken Link
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https://doi.org/10.1109/ACCESS.2021.3138768
Riding the IoT Wave With VFuzz: Discovering Security Flaws in Smart Homes | IEEE Journals & Magazine | IEEE XploreBroken Link
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https://kb.cert.org/vuls/id/142629
VU#142629 - Silicon Labs Z-Wave chipsets contain multiple vulnerabilitiesThird Party Advisory;US Government Resource
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https://github.com/CNK2100/VFuzz-public
GitHub - CNK2100/VFuzz-publicThird Party Advisory
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https://www.kb.cert.org/vuls/id/142629
VU#142629 - Silicon Labs Z-Wave chipsets contain multiple vulnerabilitiesThird Party Advisory;US Government Resource
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