CVE-2023-4489

Published: Dec 14, 2023

Modified: May 21, 2025

PUBLISHED

CVSS v3.1

6.4

MEDIUM

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.

Vendor	Product	Versions
silabs.com	Z/IP Gateway SDK	affected `0 - <= 7.18.3`

Weaknesses (CWE)

CWE-1279

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Physical

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/0698Y00000buWj0QAE?operationContext=S1

vendor-advisory

https://github.com/SiliconLabs/gecko_sdk

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CVE-2023-4489

Description

Affected Products

Weaknesses (CWE)

CVSS v3.1 Details

References