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CVE-2022-34294

Estado: ModificadaCrítica (9.8)—

totd 1.5.3 uses a fixed UDP source port in upstream queries sent to DNS resolvers. This allows DNS cache poisoning because there is not enough entropy to prevent traffic injection attacks.

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)

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2022-34294",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
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  "affected": [
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      "affectedData": [
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          "vendor": "n/a",
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  "published": "2022-08-15T12:15:19.963",
  "references": [
    {
      "url": "https://github.com/fwdillema/totd",
      "tags": [
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      "source": "cve@mitre.org"
    },
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      "url": "https://www.blackhat.com/presentations/bh-jp-08/bh-jp-08-Kaminsky/BlackHat-Japan-08-Kaminsky-DNS08-BlackOps.pdf",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "CWE-331"
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      "lang": "en",
      "value": "totd 1.5.3 uses a fixed UDP source port in upstream queries sent to DNS resolvers. This allows DNS cache poisoning because there is not enough entropy to prevent traffic injection attacks."
    },
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      "lang": "es",
      "value": "totd versión 1.5.3, usa un puerto de origen UDP fijo en las consultas ascendentes enviadas a los resolvedores de DNS. Esto permite el envenenamiento de la caché de DNS porque no se presenta suficiente entropía para prevenir ataques de inyección de tráfico."
    }
  ],
  "lastModified": "2026-06-17T04:50:03.740",
  "configurations": [
    {
      "nodes": [
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          "negate": false,
          "cpeMatch": [
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  "sourceIdentifier": "cve@mitre.org"
}