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CVE-2018-20511

Estado: ModificadaMedia (5.5)—

Se ha descubierto un problema en el kernel de Linux hasta antes de la versión 4.18.11. La función ipddp_ioctl en drivers/net/appletalk/ipddp.c permite que los usuarios locales obtengan información sensible del kernel aprovechando CAP_NET_ADMIN para leer los campos dev y next de ipddp_route mediante una llamada IOCTL SIOCFINDIPDDPRT.

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 (2)

Debian — Debian LinuxLinux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2018-20511",
  "cveTags": [],
  "metrics": {
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 2.1,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
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        "cvssData": {
          "scope": "UNCHANGED",
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          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
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        "impactScore": 3.6,
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  "affected": [
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      "affectedData": [
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          "versions": [
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  "published": "2018-12-27T14:29:00.457",
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    {
      "url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.11",
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in the Linux kernel before 4.18.11. The ipddp_ioctl function in drivers/net/appletalk/ipddp.c allows local users to obtain sensitive kernel address information by leveraging CAP_NET_ADMIN to read the ipddp_route dev and next fields via an SIOCFINDIPDDPRT ioctl call."
    },
    {
      "lang": "es",
      "value": "Se ha descubierto un problema en el kernel de Linux hasta antes de la versión 4.18.11. La función ipddp_ioctl en drivers/net/appletalk/ipddp.c permite que los usuarios locales obtengan información sensible del kernel aprovechando CAP_NET_ADMIN para leer los campos dev y next de ipddp_route mediante una llamada IOCTL SIOCFINDIPDDPRT."
    }
  ],
  "lastModified": "2026-06-17T01:53:00.290",
  "configurations": [
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        {
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              "versionEndExcluding": "4.18.11"
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  "sourceIdentifier": "cve@mitre.org"
}