CVE-2023-4489

Z/IP Gateway Use of Uninitialized PRNG when Generating S0 Encryption Key

Description

The first S0 encryption key is generated with an uninitialized PRNG in Z/IP Gateway products running Silicon Labs Z/IP Gateway SDK v7.18.3 and earlier. This makes the first S0 key generated at startup predictable, potentially allowing network key prediction and unauthorized S0 network access.

Categories

6.4
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.21%
Vendor Advisory force.com
Affected: silabs.com Z/IP Gateway SDK
Published at:
Updated at:

References

Link Tags
https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/0698Y00000buWj0QAE?operationContext=S1 vendor advisory permissions required
https://github.com/SiliconLabs/gecko_sdk third party advisory

Frequently Asked Questions

What is the severity of CVE-2023-4489?
CVE-2023-4489 has been scored as a medium severity vulnerability.
How to fix CVE-2023-4489?
To fix CVE-2023-4489, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-4489 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-4489 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-4489?
CVE-2023-4489 affects silabs.com Z/IP Gateway SDK.
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