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FKIE_CVE-2018-5131

Vulnerability from fkie_nvd - Published: 2018-06-11 21:29 - Updated: 2026-06-17 01:59
Summary
Under certain circumstances the "fetch()" API can return transient local copies of resources that were sent with a "no-store" or "no-cache" cache header instead of downloading a copy from the network as it should. This can result in previously stored, locally cached data of a website being accessible to users if they share a common profile while browsing. This vulnerability affects Firefox ESR < 52.7 and Firefox < 59.
References
security@mozilla.orghttp://www.securityfocus.com/bid/103388Third Party Advisory, VDB Entry
security@mozilla.orghttp://www.securitytracker.com/id/1040514Third Party Advisory, VDB Entry
security@mozilla.orghttps://access.redhat.com/errata/RHSA-2018:0526Third Party Advisory
security@mozilla.orghttps://access.redhat.com/errata/RHSA-2018:0527Third Party Advisory
security@mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1440775Issue Tracking, Permissions Required, Third Party Advisory
security@mozilla.orghttps://lists.debian.org/debian-lts-announce/2018/03/msg00010.htmlThird Party Advisory
security@mozilla.orghttps://security.gentoo.org/glsa/201810-01Third Party Advisory
security@mozilla.orghttps://usn.ubuntu.com/3596-1/Third Party Advisory
security@mozilla.orghttps://www.debian.org/security/2018/dsa-4139Third Party Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2018-06/Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2018-07/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/103388Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1040514Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2018:0526Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2018:0527Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.mozilla.org/show_bug.cgi?id=1440775Issue Tracking, Permissions Required, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2018/03/msg00010.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/201810-01Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3596-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2018/dsa-4139Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2018-06/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2018-07/Vendor Advisory

{
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          "product": "Firefox ESR",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "52.7",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Firefox",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "59",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "security@mozilla.org"
    }
  ],
  "configurations": [
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Under certain circumstances the \"fetch()\" API can return transient local copies of resources that were sent with a \"no-store\" or \"no-cache\" cache header instead of downloading a copy from the network as it should. This can result in previously stored, locally cached data of a website being accessible to users if they share a common profile while browsing. This vulnerability affects Firefox ESR \u003c 52.7 and Firefox \u003c 59."
    },
    {
      "lang": "es",
      "value": "Bajo ciertas circunstancias, la API \"fetch()\" puede devolver copias locales transitorias de recursos que se enviaron con una cabecera de cach\u00e9 \"no-store\" o \"no-cache\" en lugar de descargar una copia de la red, que es lo recomendado. Esto puede dar lugar a que los usuarios puedan acceder a los datos almacenados previamente y almacenados en la cach\u00e9 local de un sitio web si comparten un perfil com\u00fan durante la navegaci\u00f3n. Esta vulnerabilidad afecta a las versiones anteriores a la 52.7 de Firefox ESR y las versiones anteriores a la 59 de Firefox."
    }
  ],
  "id": "CVE-2018-5131",
  "lastModified": "2026-06-17T01:59:40.860",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
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          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
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          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.0"
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        "source": "nvd@nist.gov",
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  "published": "2018-06-11T21:29:14.157",
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  "sourceIdentifier": "security@mozilla.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
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          "lang": "en",
          "value": "CWE-200"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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