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CVE-2018-3875

Estado: ModificadaCrítica (9.9)—

An exploitable buffer overflow vulnerability exists in the credentials handler of video-core's HTTP server of Samsung SmartThings Hub STH-ETH-250-Firmware version 0.20.17. The video-core process incorrectly extracts fields from a user-controlled JSON payload, leading to a buffer overflow on the stack. The strncpy overflows the destination buffer, which has a size of 2,000 bytes. An attacker can send an arbitrarily long "sessionToken" value in order to exploit this vulnerability.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Samsung — Sth-eth-250 Firmware

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2018-3875",
  "cveTags": [],
  "metrics": {
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C",
          "authentication": "SINGLE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
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          "vendor": "Samsung",
          "product": "SmartThings Hub STH-ETH-250",
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  "published": "2018-09-10T19:29:00.500",
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  "vulnStatus": "Modified",
  "weaknesses": [
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          "value": "CWE-119"
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      "value": "An exploitable buffer overflow vulnerability exists in the credentials handler of video-core's HTTP server of Samsung SmartThings Hub STH-ETH-250-Firmware version 0.20.17. The video-core process incorrectly extracts fields from a user-controlled JSON payload, leading to a buffer overflow on the stack. The strncpy overflows the destination buffer, which has a size of 2,000 bytes. An attacker can send an arbitrarily long \"sessionToken\" value in order to exploit this vulnerability."
    },
    {
      "lang": "es",
      "value": "Existe una vulnerabilidad explotable de desbordamiento de búfer en el manipulador de credenciales del servidor HTTP de video-core de Samsung SmartThings Hub STH-ETH-250 con firmware en versión 0.20.17. El proceso video-core extrae incorrectamente campos de una carga útil JSON controlada por el usuario, lo que conduce a un desbordamiento de búfer en la pila. La llamada strncpy desborda el búfer de destino, que tiene un tamaño de 2.000 bytes. Un atacante puede enviar un valor \"sessionToken\" arbitrariamente largo para explotar esta vulnerabilidad."
    }
  ],
  "lastModified": "2026-06-17T01:57:56.560",
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