usn-4637-2
Vulnerability from osv_ubuntu
Published
2020-11-19 20:12
Modified
2026-04-22 07:36
Summary
firefox vulnerabilities
Details

USN-4637-1 fixed vulnerabilities in Firefox. This update provides the corresponding updates for Ubuntu 16.04 LTS.

Original advisory details:

Multiple security issues were discovered in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information across origins, bypass security restrictions, conduct phishing attacks, conduct cross-site scripting (XSS) attacks, bypass Content Security Policy (CSP) restrictions, conduct DNS rebinding attacks, or execute arbitrary code.

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-16012",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-26951",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-26952",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-26953",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-26956",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-26958",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-26959",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-26960",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-26961",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-26962",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-26963",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-26965",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-26967",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-26968",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-26969",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "firefox",
            "binary_version": "83.0+build2-0ubuntu0.16.04.3"
          },
          {
            "binary_name": "firefox-geckodriver",
            "binary_version": "83.0+build2-0ubuntu0.16.04.3"
          },
          {
            "binary_name": "firefox-mozsymbols",
            "binary_version": "83.0+build2-0ubuntu0.16.04.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "firefox",
        "purl": "pkg:deb/ubuntu/firefox@83.0+build2-0ubuntu0.16.04.3?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "83.0+build2-0ubuntu0.16.04.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "41.0.2+build2-0ubuntu1",
        "42.0+build2-0ubuntu1",
        "44.0+build3-0ubuntu2",
        "44.0.1+build1-0ubuntu1",
        "44.0.2+build1-0ubuntu1",
        "45.0+build2-0ubuntu1",
        "45.0.1+build1-0ubuntu1",
        "45.0.2+build1-0ubuntu1",
        "46.0+build5-0ubuntu0.16.04.2",
        "46.0.1+build1-0ubuntu0.16.04.2",
        "47.0+build3-0ubuntu0.16.04.1",
        "48.0+build2-0ubuntu0.16.04.1",
        "49.0+build4-0ubuntu0.16.04.1",
        "49.0.2+build2-0ubuntu0.16.04.2",
        "50.0+build2-0ubuntu0.16.04.2",
        "50.0.2+build1-0ubuntu0.16.04.1",
        "50.1.0+build2-0ubuntu0.16.04.1",
        "51.0.1+build2-0ubuntu0.16.04.1",
        "51.0.1+build2-0ubuntu0.16.04.2",
        "52.0+build2-0ubuntu0.16.04.1",
        "52.0.1+build2-0ubuntu0.16.04.1",
        "52.0.2+build1-0ubuntu0.16.04.1",
        "53.0+build6-0ubuntu0.16.04.1",
        "53.0.2+build1-0ubuntu0.16.04.2",
        "53.0.3+build1-0ubuntu0.16.04.2",
        "54.0+build3-0ubuntu0.16.04.1",
        "55.0.1+build2-0ubuntu0.16.04.2",
        "55.0.2+build1-0ubuntu0.16.04.1",
        "56.0+build6-0ubuntu0.16.04.1",
        "56.0+build6-0ubuntu0.16.04.2",
        "57.0+build4-0ubuntu0.16.04.5",
        "57.0+build4-0ubuntu0.16.04.6",
        "57.0.1+build2-0ubuntu0.16.04.1",
        "57.0.3+build1-0ubuntu0.16.04.1",
        "57.0.4+build1-0ubuntu0.16.04.1",
        "58.0+build6-0ubuntu0.16.04.1",
        "58.0.1+build1-0ubuntu0.16.04.1",
        "58.0.2+build1-0ubuntu0.16.04.1",
        "59.0+build5-0ubuntu0.16.04.1",
        "59.0.1+build1-0ubuntu0.16.04.1",
        "59.0.2+build1-0ubuntu0.16.04.1",
        "59.0.2+build1-0ubuntu0.16.04.3",
        "60.0+build2-0ubuntu0.16.04.1",
        "60.0.1+build2-0ubuntu0.16.04.1",
        "60.0.2+build1-0ubuntu0.16.04.1",
        "61.0+build3-0ubuntu0.16.04.2",
        "61.0.1+build1-0ubuntu0.16.04.1",
        "62.0+build2-0ubuntu0.16.04.3",
        "62.0+build2-0ubuntu0.16.04.4",
        "62.0+build2-0ubuntu0.16.04.5",
        "62.0.3+build1-0ubuntu0.16.04.2",
        "63.0+build2-0ubuntu0.16.04.2",
        "63.0.3+build1-0ubuntu0.16.04.1",
        "64.0+build3-0ubuntu0.16.04.1",
        "65.0+build2-0ubuntu0.16.04.1",
        "65.0.1+build2-0ubuntu0.16.04.1",
        "66.0+build3-0ubuntu0.16.04.2",
        "66.0.1+build1-0ubuntu0.16.04.1",
        "66.0.2+build1-0ubuntu0.16.04.1",
        "66.0.3+build1-0ubuntu0.16.04.1",
        "66.0.4+build3-0ubuntu0.16.04.1",
        "66.0.5+build1-0ubuntu0.16.04.1",
        "67.0+build2-0ubuntu0.16.04.1",
        "67.0.1+build1-0ubuntu0.16.04.1",
        "67.0.2+build2-0ubuntu0.16.04.1",
        "67.0.3+build1-0ubuntu0.16.04.1",
        "67.0.4+build1-0ubuntu0.16.04.1",
        "68.0+build3-0ubuntu0.16.04.1",
        "68.0.1+build1-0ubuntu0.16.04.1",
        "68.0.2+build1-0ubuntu0.16.04.1",
        "69.0+build2-0ubuntu0.16.04.4",
        "69.0.1+build1-0ubuntu0.16.04.1",
        "69.0.2+build1-0ubuntu0.16.04.1",
        "70.0+build2-0ubuntu0.16.04.1",
        "70.0.1+build1-0ubuntu0.16.04.1",
        "71.0+build5-0ubuntu0.16.04.1",
        "72.0.1+build1-0ubuntu0.16.04.1",
        "72.0.2+build1-0ubuntu0.16.04.1",
        "73.0.1+build1-0ubuntu0.16.04.1",
        "74.0+build3-0ubuntu0.16.04.1",
        "74.0.1+build1-0ubuntu0.16.04.1",
        "75.0+build3-0ubuntu0.16.04.1",
        "76.0+build2-0ubuntu0.16.04.1",
        "76.0.1+build1-0ubuntu0.16.04.1",
        "77.0.1+build1-0ubuntu0.16.04.1",
        "78.0.1+build1-0ubuntu0.16.04.1",
        "78.0.2+build2-0ubuntu0.16.04.1",
        "79.0+build1-0ubuntu0.16.04.2",
        "80.0+build2-0ubuntu0.16.04.1",
        "80.0.1+build1-0ubuntu0.16.04.1",
        "81.0+build2-0ubuntu0.16.04.1",
        "81.0.2+build1-0ubuntu0.16.04.1",
        "82.0+build2-0ubuntu0.16.04.5",
        "82.0.2+build1-0ubuntu0.16.04.1",
        "82.0.3+build1-0ubuntu0.16.04.1"
      ]
    }
  ],
  "aliases": [],
  "details": "USN-4637-1 fixed vulnerabilities in Firefox. This update provides the\ncorresponding updates for Ubuntu 16.04 LTS.\n\nOriginal advisory details:\n\n Multiple security issues were discovered in Firefox. If a user were\n tricked in to opening a specially crafted website, an attacker could\n potentially exploit these to cause a denial of service, obtain sensitive\n information across origins, bypass security restrictions, conduct phishing\n attacks, conduct cross-site scripting (XSS) attacks, bypass Content\n Security Policy (CSP) restrictions, conduct DNS rebinding attacks, or\n execute arbitrary code.\n",
  "id": "USN-4637-2",
  "modified": "2026-04-22T07:36:58Z",
  "published": "2020-11-19T20:12:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4637-2"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-16012"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-26951"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-26952"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-26953"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-26956"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-26958"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-26959"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-26960"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-26961"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-26962"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-26963"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-26965"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-26967"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-26968"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-26969"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "firefox vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2020-16012",
    "UBUNTU-CVE-2020-26951",
    "UBUNTU-CVE-2020-26952",
    "UBUNTU-CVE-2020-26953",
    "UBUNTU-CVE-2020-26956",
    "UBUNTU-CVE-2020-26958",
    "UBUNTU-CVE-2020-26959",
    "UBUNTU-CVE-2020-26960",
    "UBUNTU-CVE-2020-26961",
    "UBUNTU-CVE-2020-26962",
    "UBUNTU-CVE-2020-26963",
    "UBUNTU-CVE-2020-26965",
    "UBUNTU-CVE-2020-26967",
    "UBUNTU-CVE-2020-26968",
    "UBUNTU-CVE-2020-26969"
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.