CVE-2023-4489

Published Dec 14, 2023

Last updated 2 months ago

CVSS critical 9.8

Overview

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.
Source: product-security@silabs.com
NVD status: Modified

Risk scores

CVSS 3.1

Type: Primary
Base score: 9.8
Impact score: 5.9
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: CRITICAL

Weaknesses

nvd@nist.gov: CWE-908
product-security@silabs.com: CWE-1279

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:silabs:z\\/ip_gateway_sdk:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "4D5AB8BA-E003-4066-B60C-D63034DAF6ED",
            "versionEndIncluding": "7.18.03"
          }
        ],
        "operator": "OR"
      }
    ]
  }
]

References