{
  "id": "CVE-2020-35111",
  "sourceIdentifier": "security@mozilla.org",
  "published": "2021-01-07T14:15:12.453",
  "lastModified": "2021-01-12T16:52:46.233",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "When an extension with the proxy permission registered to receive <all_urls>, the proxy.onRequest callback was not triggered for view-source URLs. While web content cannot navigate to such URLs, a user opening View Source could have inadvertently leaked their IP address. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6."
    },
    {
      "lang": "es",
      "value": "Cuando una extensi\u00f3n con el permiso de proxy se registr\u00f3 para recibir (all_urls), la devoluci\u00f3n de llamada proxy.onRequest no se desencaden\u00f3 para las URL de vista de origen.&#xa0;Si bien el contenido web no puede navegar a dichas URL, un usuario que abra View Source podr\u00eda haber filtrado inadvertidamente su direcci\u00f3n IP.&#xa0;Esta vulnerabilidad afecta a Firefox versiones anteriores a 84, Thunderbird versiones anteriores a 78,6 y Firefox ESR versiones anteriores a 78,6"
    }
  ],
  "metrics": {
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        "type": "Primary",
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          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM"
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        "exploitabilityScore": 2.8,
        "impactScore": 1.4
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    ],
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          "accessVector": "NETWORK",
          "accessComplexity": "MEDIUM",
          "authentication": "NONE",
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 4.3
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 8.6,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
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        "obtainOtherPrivilege": false,
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      }
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  "weaknesses": [
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      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
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  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
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              "vulnerable": true,
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  "references": [
    {
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1657916",
      "source": "security@mozilla.org",
      "tags": [
        "Permissions Required"
      ]
    },
    {
      "url": "https://www.mozilla.org/security/advisories/mfsa2020-54/",
      "source": "security@mozilla.org",
      "tags": [
        "Vendor Advisory"
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    },
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      "url": "https://www.mozilla.org/security/advisories/mfsa2020-55/",
      "source": "security@mozilla.org",
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}