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CVE-2019-9798

Estado: ModificadaAlta (7.4)—

En los sistemas Android, Firefox puede cargar una libreria de APITRACE_LIB, que puede ser escrita por todos los usuarios y aplicaciones. Esto podría permitir que las aplicaciones maliciosas de terceros ejecuten un ataque man-in-the-middle si se ha escrito un código malicioso en esa ubicación y se ha cargado. *Nota: Este problema sólo afecta a Android. Otros sistemas operativos no se ven afectados.*. Esta vulnerabilidad afecta a Firefox versiones anteriores a 66.

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)

Mozilla — Firefox

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2019-9798",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 4.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 7.4,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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        "impactScore": 5.2,
        "exploitabilityScore": 2.2
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  "affected": [
    {
      "source": "security@mozilla.org",
      "affectedData": [
        {
          "vendor": "Mozilla",
          "product": "Firefox",
          "versions": [
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              "status": "affected",
              "version": "unspecified",
              "lessThan": "66",
              "versionType": "custom"
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  "published": "2019-04-26T17:29:02.803",
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      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1527534",
      "tags": [
        "Issue Tracking",
        "Permissions Required",
        "Vendor Advisory"
      ],
      "source": "security@mozilla.org"
    },
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      "url": "https://www.mozilla.org/security/advisories/mfsa2019-07/",
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      "source": "security@mozilla.org"
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      "tags": [
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        "Permissions Required",
        "Vendor Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
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      "url": "https://www.mozilla.org/security/advisories/mfsa2019-07/",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-426"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "On Android systems, Firefox can load a library from APITRACE_LIB, which is writable by all users and applications. This could allow malicious third party applications to execute a man-in-the-middle attack if a malicious code was written to that location and loaded. *Note: This issue only affects Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 66."
    },
    {
      "lang": "es",
      "value": "En los sistemas Android, Firefox puede cargar una libreria de APITRACE_LIB, que puede ser escrita por todos los usuarios y aplicaciones. Esto podría permitir que las aplicaciones maliciosas de terceros ejecuten un ataque man-in-the-middle si se ha escrito un código malicioso en esa ubicación y se ha cargado. *Nota: Este problema sólo afecta a Android. Otros sistemas operativos no se ven afectados.*. Esta vulnerabilidad afecta a Firefox versiones anteriores a 66."
    }
  ],
  "lastModified": "2026-06-17T02:44:22.133",
  "configurations": [
    {
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}