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CVE-2023-6865

Estado: ModificadaMedia (6.5)—

`EncryptingOutputStream` was susceptible to exposing uninitialized data. This issue could only be abused in order to write data to a local disk which may have implications for private browsing mode. This vulnerability affects Firefox ESR < 115.6 and Firefox < 121.

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 (3)

Debian — Debian LinuxMozilla — FirefoxMozilla — Firefox ESR

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2023-6865",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@mozilla.org",
      "affectedData": [
        {
          "vendor": "Mozilla",
          "product": "Firefox ESR",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "115.6",
              "versionType": "custom"
            }
          ]
        },
        {
          "vendor": "Mozilla",
          "product": "Firefox",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "121",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2023-12-19T14:15:07.777",
  "references": [
    {
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1864123",
      "tags": [
        "Issue Tracking",
        "Permissions Required"
      ],
      "source": "security@mozilla.org"
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "source": "security@mozilla.org"
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      "url": "https://security.gentoo.org/glsa/202401-10",
      "tags": [
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      "source": "security@mozilla.org"
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      "url": "https://www.mozilla.org/security/advisories/mfsa2023-54/",
      "tags": [
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      "source": "security@mozilla.org"
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    {
      "url": "https://www.mozilla.org/security/advisories/mfsa2023-56/",
      "tags": [
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      "source": "security@mozilla.org"
    },
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      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1864123",
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      "tags": [
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.mozilla.org/security/advisories/mfsa2023-56/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "`EncryptingOutputStream` was susceptible to exposing uninitialized data.  This issue could only be abused in order to write data to a local disk which may have implications for private browsing mode. This vulnerability affects Firefox ESR < 115.6 and Firefox < 121."
    },
    {
      "lang": "es",
      "value": "`EncryptingOutputStream` era susceptible de exponer datos no inicializados. Sólo se puede abusar de este problema para escribir datos en un disco local, lo que puede tener implicaciones para el modo de navegación privada. Esta vulnerabilidad afecta a Firefox ESR &lt;115.6 y Firefox &lt;121."
    }
  ],
  "lastModified": "2026-06-17T06:51:34.463",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "vulnerable": true,
              "matchCriteriaId": "A3D81D72-5965-4DB7-BFA7-9A32A9108919",
              "versionEndExcluding": "121.0"
            },
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              "vulnerable": true,
              "matchCriteriaId": "46B36C5E-77B7-4FBF-8B7A-6F794C8B8B2B",
              "versionEndExcluding": "115.6"
            }
          ],
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    {
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            },
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              "vulnerable": true,
              "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED"
            },
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  "sourceIdentifier": "security@mozilla.org"
}