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CVE-2018-5106

Estado: ModificadaMedia (5.3)—

El tráfico del editor de estilos en las herramientas del desarrollador se puede enrutar mediante un trabajador de servicio alojado en un sitio web externo si un usuario selecciona enlaces de error cuando estas herramientas están abiertas. Esto puede permitir que la información del editor de estilos utilizada en las herramientas del desarrollador fugue orígenes cruzados. Esta vulnerabilidad afecta a las versiones anteriores a la 58 de Firefox.

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)

Canonical — Ubuntu LinuxMozilla — Firefox

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2018-5106",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/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": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 5.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security@mozilla.org",
      "affectedData": [
        {
          "vendor": "Mozilla",
          "product": "Firefox",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "58",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2018-06-11T21:29:13.060",
  "references": [
    {
      "url": "http://www.securityfocus.com/bid/102786",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "security@mozilla.org"
    },
    {
      "url": "http://www.securitytracker.com/id/1040270",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "security@mozilla.org"
    },
    {
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1408708",
      "tags": [
        "Issue Tracking",
        "Permissions Required"
      ],
      "source": "security@mozilla.org"
    },
    {
      "url": "https://usn.ubuntu.com/3544-1/",
      "tags": [
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      ],
      "source": "security@mozilla.org"
    },
    {
      "url": "https://www.mozilla.org/security/advisories/mfsa2018-02/",
      "tags": [
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      "source": "security@mozilla.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/102786",
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        "VDB Entry"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "tags": [
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      "tags": [
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    },
    {
      "url": "https://www.mozilla.org/security/advisories/mfsa2018-02/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Style editor traffic in the Developer Tools can be routed through a service worker hosted on a third party website if a user selects error links when these tools are open. This can allow style editor information used within Developer Tools to leak cross-origin. This vulnerability affects Firefox < 58."
    },
    {
      "lang": "es",
      "value": "El tráfico del editor de estilos en las herramientas del desarrollador se puede enrutar mediante un trabajador de servicio alojado en un sitio web externo si un usuario selecciona enlaces de error cuando estas herramientas están abiertas. Esto puede permitir que la información del editor de estilos utilizada en las herramientas del desarrollador fugue orígenes cruzados. Esta vulnerabilidad afecta a las versiones anteriores a la 58 de Firefox."
    }
  ],
  "lastModified": "2026-06-17T01:59:38.010",
  "configurations": [
    {
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        {
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          "cpeMatch": [
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              "vulnerable": true,
              "matchCriteriaId": "1725C8A3-FA9C-4A5E-B46F-48FDB429E7EE",
              "versionEndIncluding": "57.0.4"
            }
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          "operator": "OR"
        }
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    },
    {
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}