FKIE_CVE-2016-5284

Vulnerability from fkie_nvd - Published: 2016-09-22 22:59 - Updated: 2026-06-17 00:49
Severity
7.4 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Summary
Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4, and Thunderbird < 45.4 rely on unintended expiration dates for Preloaded Public Key Pinning, which allows man-in-the-middle attackers to spoof add-on updates by leveraging possession of an X.509 server certificate for addons.mozilla.org signed by an arbitrary built-in Certification Authority.
References
security@mozilla.orghttp://rhn.redhat.com/errata/RHSA-2016-1912.html
security@mozilla.orghttp://seclists.org/dailydave/2016/q3/51Third Party Advisory
security@mozilla.orghttp://www.debian.org/security/2016/dsa-3674
security@mozilla.orghttp://www.mozilla.org/security/announce/2016/mfsa2016-85.htmlRelease Notes
security@mozilla.orghttp://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html
security@mozilla.orghttp://www.securityfocus.com/bid/93049
security@mozilla.orghttp://www.securitytracker.com/id/1036852
security@mozilla.orghttps://blog.mozilla.org/security/2016/09/16/update-on-add-on-pinning-vulnerability/Third Party Advisory, VDB Entry
security@mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1303127Issue Tracking, Third Party Advisory, VDB Entry
security@mozilla.orghttps://hackernoon.com/tor-browser-exposed-anti-privacy-implantation-at-mass-scale-bd68e9eb1e95Technical Description
security@mozilla.orghttps://security.gentoo.org/glsa/201701-15
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2016-86/
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2016-88/
af854a3a-2127-422b-91ae-364da2661108http://rhn.redhat.com/errata/RHSA-2016-1912.html
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/dailydave/2016/q3/51Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2016/dsa-3674
af854a3a-2127-422b-91ae-364da2661108http://www.mozilla.org/security/announce/2016/mfsa2016-85.htmlRelease Notes
af854a3a-2127-422b-91ae-364da2661108http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/93049
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1036852
af854a3a-2127-422b-91ae-364da2661108https://blog.mozilla.org/security/2016/09/16/update-on-add-on-pinning-vulnerability/Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.mozilla.org/show_bug.cgi?id=1303127Issue Tracking, Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://hackernoon.com/tor-browser-exposed-anti-privacy-implantation-at-mass-scale-bd68e9eb1e95Technical Description
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/201701-15
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2016-86/
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2016-88/
Impacted products
Vendor Product Version
mozilla firefox *
mozilla firefox 45.0
mozilla firefox 45.0.1
mozilla firefox 45.0.2
mozilla firefox 45.1.1
mozilla firefox 45.2.0
mozilla firefox 45.3.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "security@mozilla.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C56407AD-F303-4E6E-A64E-4AFA23BFB739",
              "versionEndIncluding": "48.0.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mozilla:firefox:45.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "5000794D-2129-49A0-A88D-84C7558B2AD7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mozilla:firefox:45.0.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "AB24CED1-AAEB-41E8-9C02-71E19EDC0086",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mozilla:firefox:45.0.2:*:*:*:*:*:*:*",
              "matchCriteriaId": "7F845C30-6A43-4BBE-85FA-E5698B5327DD",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mozilla:firefox:45.1.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "1E084D09-97BE-43E1-94D1-05206E513B99",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mozilla:firefox:45.2.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "915E92FE-8049-4EA5-95B8-F3EA25F78546",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mozilla:firefox:45.3.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "CA9E7A47-5E77-4736-920A-93283E30DC7C",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4, and Thunderbird \u003c 45.4 rely on unintended expiration dates for Preloaded Public Key Pinning, which allows man-in-the-middle attackers to spoof add-on updates by leveraging possession of an X.509 server certificate for addons.mozilla.org signed by an arbitrary built-in Certification Authority."
    },
    {
      "lang": "es",
      "value": "Mozilla Firefox en versiones anteriores a la 49.0, Firefox ESR en versiones 45.x anteriores a la 45.4 y Thunderbird en versiones anteriores a la 45.4 conf\u00edan en fechas de expiraci\u00f3n err\u00f3neas para Preloaded Public Key Pinning, lo que permite a los atacantes Man-in-the-Middle (MitM) suplantar las actualizaciones de los add-ons aprovechando la posesi\u00f3n de un certificado de servidor X.509 para addons.mozilla.org firmado por una autoridad certificadora integrada arbitraria."
    }
  ],
  "id": "CVE-2016-5284",
  "lastModified": "2026-06-17T00:49:07.083",
  "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": true
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N",
          "version": "3.0"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 4.0,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2016-09-22T22:59:18.973",
  "references": [
    {
      "source": "security@mozilla.org",
      "url": "http://rhn.redhat.com/errata/RHSA-2016-1912.html"
    },
    {
      "source": "security@mozilla.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "http://seclists.org/dailydave/2016/q3/51"
    },
    {
      "source": "security@mozilla.org",
      "url": "http://www.debian.org/security/2016/dsa-3674"
    },
    {
      "source": "security@mozilla.org",
      "tags": [
        "Release Notes"
      ],
      "url": "http://www.mozilla.org/security/announce/2016/mfsa2016-85.html"
    },
    {
      "source": "security@mozilla.org",
      "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html"
    },
    {
      "source": "security@mozilla.org",
      "url": "http://www.securityfocus.com/bid/93049"
    },
    {
      "source": "security@mozilla.org",
      "url": "http://www.securitytracker.com/id/1036852"
    },
    {
      "source": "security@mozilla.org",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "https://blog.mozilla.org/security/2016/09/16/update-on-add-on-pinning-vulnerability/"
    },
    {
      "source": "security@mozilla.org",
      "tags": [
        "Issue Tracking",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1303127"
    },
    {
      "source": "security@mozilla.org",
      "tags": [
        "Technical Description"
      ],
      "url": "https://hackernoon.com/tor-browser-exposed-anti-privacy-implantation-at-mass-scale-bd68e9eb1e95"
    },
    {
      "source": "security@mozilla.org",
      "url": "https://security.gentoo.org/glsa/201701-15"
    },
    {
      "source": "security@mozilla.org",
      "url": "https://www.mozilla.org/security/advisories/mfsa2016-86/"
    },
    {
      "source": "security@mozilla.org",
      "url": "https://www.mozilla.org/security/advisories/mfsa2016-88/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://rhn.redhat.com/errata/RHSA-2016-1912.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "http://seclists.org/dailydave/2016/q3/51"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.debian.org/security/2016/dsa-3674"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes"
      ],
      "url": "http://www.mozilla.org/security/announce/2016/mfsa2016-85.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.securityfocus.com/bid/93049"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.securitytracker.com/id/1036852"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "https://blog.mozilla.org/security/2016/09/16/update-on-add-on-pinning-vulnerability/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Issue Tracking",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1303127"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Technical Description"
      ],
      "url": "https://hackernoon.com/tor-browser-exposed-anti-privacy-implantation-at-mass-scale-bd68e9eb1e95"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://security.gentoo.org/glsa/201701-15"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://www.mozilla.org/security/advisories/mfsa2016-86/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://www.mozilla.org/security/advisories/mfsa2016-88/"
    }
  ],
  "sourceIdentifier": "security@mozilla.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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