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CVE-2014-9751

Estado: ModificadaMedia (6.8)—

La función read_network_packet en ntp_io.c en ntpd en NTP 4.x en versiones anteriores a 4.2.8p1 en Linux y OS X no determina correctamente si una dirección IP fuente es una dirección IPv6 loopback, lo que facilita a atacantes remotos suplantar paquetes restringidos y leer o escribir en el estado runtime, aprovechando la habilidad para alcanzar la interfaz de red de la máquina ntpd con un paquete proveniente de la dirección ::1.

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 (6)

Debian — Debian LinuxNTP — NTPOracle — LinuxRedhat — Enterprise Linux DesktopRedhat — Enterprise Linux ServerRedhat — Enterprise Linux Workstation

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2014-9751",
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          "baseScore": 6.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
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        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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  "published": "2015-10-06T01:59:02.610",
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          "value": "CWE-20"
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      "value": "The read_network_packet function in ntp_io.c in ntpd in NTP 4.x before 4.2.8p1 on Linux and OS X does not properly determine whether a source IP address is an IPv6 loopback address, which makes it easier for remote attackers to spoof restricted packets, and read or write to the runtime state, by leveraging the ability to reach the ntpd machine's network interface with a packet from the ::1 address."
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    {
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      "value": "La función read_network_packet en ntp_io.c en ntpd en NTP 4.x en versiones anteriores a 4.2.8p1 en Linux y OS X no determina correctamente si una dirección IP fuente es una dirección IPv6 loopback, lo que facilita a atacantes remotos suplantar paquetes restringidos y leer o escribir en el estado runtime, aprovechando la habilidad para alcanzar la interfaz de red de la máquina ntpd con un paquete proveniente de la dirección ::1."
    }
  ],
  "lastModified": "2026-06-17T00:18:55.447",
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