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CVE-2017-9478

Estado: ModificadaAlta (7.5)—

The Comcast firmware on Cisco DPC3939 (firmware version dpc3939-P20-18-v303r20421733-160420a-CMCST) and DPC3939 (firmware version dpc3939-P20-18-v303r20421746-170221a-CMCST) devices sets the CM MAC address to a value with a two-byte offset from the MTA/VoIP MAC address, which indirectly allows remote attackers to discover hidden Home Security Wi-Fi networks by leveraging the embedding of the MTA/VoIP MAC address into the DNS hostname.

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)

Cisco — Dpc3939 Firmware

CWE

Referencias

JSON original (NVD)

Mostrar
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
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        "impactScore": 2.9,
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          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
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  "affected": [
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      "affectedData": [
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  "published": "2017-07-31T03:29:00.300",
  "references": [
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      "url": "https://github.com/BastilleResearch/CableTap/blob/master/doc/advisories/bastille-20.emta-reverse-dns.txt",
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      "value": "The Comcast firmware on Cisco DPC3939 (firmware version dpc3939-P20-18-v303r20421733-160420a-CMCST) and DPC3939 (firmware version dpc3939-P20-18-v303r20421746-170221a-CMCST) devices sets the CM MAC address to a value with a two-byte offset from the MTA/VoIP MAC address, which indirectly allows remote attackers to discover hidden Home Security Wi-Fi networks by leveraging the embedding of the MTA/VoIP MAC address into the DNS hostname."
    },
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      "lang": "es",
      "value": "El firmware de Comcast en Cisco DPC3939 (versión de firmware dpc3939-P20-18-v303r20421733-160420a-CMCST) y DPC3939 (DPC3939 (DPC3939 ( versión de firmware dpc3939-P20-18-v303r20421746-170221a-CMCST), establece la dirección MAC CM en un valor con un offset de dos bytes de la Dirección MAC MTA/VoIP, que indirectamente permite a los atacantes remotos detectar redes Wi-Fi ocultas de Home Security mediante el aprovechamiento de la inserción de la dirección MAC MTA/VoIP en el nombre de host DNS."
    }
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  "lastModified": "2026-06-17T01:28:12.070",
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