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CVE-2018-3903

Estado: ModificadaCrítica (9.9)—

On Samsung SmartThings Hub STH-ETH-250 devices with 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. An attacker can send an HTTP request to trigger this vulnerability. The memcpy call overflows the destination buffer, which has a size of 512 bytes. An attacker can send an arbitrarily long "url" value in order to overwrite the saved-PC with 0x42424242.

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)

Mostrar
{
  "id": "CVE-2018-3903",
  "cveTags": [],
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        "cvssData": {
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C",
          "authentication": "SINGLE",
          "integrityImpact": "COMPLETE",
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  "published": "2018-08-23T15:29:01.210",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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          "value": "CWE-787"
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      "lang": "en",
      "value": "On Samsung SmartThings Hub STH-ETH-250 devices with 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. An attacker can send an HTTP request to trigger this vulnerability. The memcpy call overflows the destination buffer, which has a size of 512 bytes. An attacker can send an arbitrarily long \"url\" value in order to overwrite the saved-PC with 0x42424242."
    },
    {
      "lang": "es",
      "value": "En Samsung SmartThings Hub STH-ETH-250 en su versión de firmware 0.20.17, el proceso video-core extrae incorrectamente campos de una carga útil JSON controlada por el usuario, conduciendo a un desbordamiento de búfer en la pila. Un atacante puede enviar una petición HTTP para provocar esta vulnerabilidad. La llamada memcpy desborda el búfer de destino, el cual tiene un tamaño de 512 bytes. Un atacante puede enviar un valor \"url\" arbitrariamente largo para sobrescribir saved-PC con 0x42424242."
    }
  ],
  "lastModified": "2026-06-17T01:57:59.457",
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  "sourceIdentifier": "talos-cna@cisco.com"
}