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CVE-2019-20917

Estado: ModificadaMedia (6.5)—

An issue was discovered in InspIRCd 2 before 2.0.28 and 3 before 3.3.0. The mysql module contains a NULL pointer dereference when built against mariadb-connector-c 3.0.5 or newer. When combined with the sqlauth or sqloper modules, this vulnerability can be used for remote crashing of an InspIRCd server by any user able to connect to a server.

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 LinuxInspircd — Inspircd

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2019-20917",
  "cveTags": [],
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:C",
          "authentication": "SINGLE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
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        "acInsufInfo": false,
        "impactScore": 6.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
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        "exploitabilityScore": 2.8
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  "affected": [
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      "affectedData": [
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  "published": "2020-09-11T05:15:12.480",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in InspIRCd 2 before 2.0.28 and 3 before 3.3.0. The mysql module contains a NULL pointer dereference when built against mariadb-connector-c 3.0.5 or newer. When combined with the sqlauth or sqloper modules, this vulnerability can be used for remote crashing of an InspIRCd server by any user able to connect to a server."
    },
    {
      "lang": "es",
      "value": "Se detectó un problema en InspIRCd versiones 2 anteriores a 2.0.28 y versiones 3 anteriores a 3.3.0. El módulo mysql contiene una desreferencia del puntero NULL cuando se construye contra el mariadb-connector-c versión 3.0.5 o más reciente. Cuando es combinado con los módulos sqlauth o sqloper, esta vulnerabilidad puede ser usada  para el bloqueo remoto de un servidor de InspIRCd por cualquier usuario que pueda conectarse a un servidor"
    }
  ],
  "lastModified": "2026-06-17T02:31:26.043",
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