{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2023-4489","assignerOrgId":"030b2754-1501-44a4-bef8-48be86a33bf4","state":"PUBLISHED","assignerShortName":"Silabs","dateReserved":"2023-08-23T04:17:01.960Z","datePublished":"2023-12-14T23:00:29.693Z","dateUpdated":"2025-05-21T14:29:37.355Z"},"containers":{"cna":{"affected":[{"defaultStatus":"affected","product":"Z/IP Gateway SDK","vendor":"silabs.com","versions":[{"lessThanOrEqual":"7.18.3","status":"affected","version":"0","versionType":"LessThan"}]}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<span style=\"background-color: rgb(255, 255, 255);\">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. </span><span style=\"background-color: rgb(255, 255, 255);\">This makes the first S0 key generated at startup predictable, potentially allowing network key prediction and unauthorized S0 network access.</span>\n\n<table><tbody><tr><td> </td></tr></tbody></table>"}],"value":"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."}],"impacts":[{"capecId":"CAPEC-59","descriptions":[{"lang":"en","value":"CAPEC-59 Session Credential Falsification through Prediction"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"PHYSICAL","availabilityImpact":"HIGH","baseScore":6.4,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1279","description":"CWE-1279 Cryptographic Operations are run Before Supporting Units are Ready","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"030b2754-1501-44a4-bef8-48be86a33bf4","shortName":"Silabs","dateUpdated":"2024-09-27T16:22:41.599Z"},"references":[{"tags":["vendor-advisory"],"url":"https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/0698Y00000buWj0QAE?operationContext=S1"},{"url":"https://github.com/SiliconLabs/gecko_sdk"}],"source":{"discovery":"UNKNOWN"},"title":"Z/IP Gateway Use of Uninitialized PRNG when Generating S0 Encryption Key","x_generator":{"engine":"Vulnogram 0.1.0-dev"}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T07:31:05.899Z"},"title":"CVE Program Container","references":[{"tags":["vendor-advisory","x_transferred"],"url":"https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/0698Y00000buWj0QAE?operationContext=S1"},{"url":"https://github.com/SiliconLabs/gecko_sdk","tags":["x_transferred"]}]},{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-05-21T14:28:57.358361Z","id":"CVE-2023-4489","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-05-21T14:29:37.355Z"}}]}}