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.
Published 2023-12-14 23:15:07
Updated 2024-09-27 17:15:12
Source Silicon Labs
View at NVD,   CVE.org

Products affected by CVE-2023-4489

Exploit prediction scoring system (EPSS) score for CVE-2023-4489

0.12%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 47 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2023-4489

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
9.8
CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.9
5.9
NIST
6.4
MEDIUM CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
0.5
5.9
Silicon Labs

CWE ids for CVE-2023-4489

References for CVE-2023-4489

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