USN-4611-1 (UBUNTU-CVE-2020-14318)

Vulnerability from osv_ubuntu – Published: 2020-11-02 13:56 – Updated: 2026-04-22 07:36 – Source website
VLAI
Summary
samba vulnerabilities
Details

Steven French discovered that Samba incorrectly handled ChangeNotify permissions. A remote attacker could possibly use this issue to obtain file name information. (CVE-2020-14318)

Bas Alberts discovered that Samba incorrectly handled certain winbind requests. A remote attacker could possibly use this issue to cause winbind to crash, resulting in a denial of service. (CVE-2020-14323)

Francis Brosnan Blázquez discovered that Samba incorrectly handled certain invalid DNS records. A remote attacker could possibly use this issue to cause the DNS server to crash, resulting in a denial of service. (CVE-2020-14383)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-14318",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-14323",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-14383",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ctdb",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32"
          },
          {
            "binary_name": "libnss-winbind",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32"
          },
          {
            "binary_name": "libpam-winbind",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32"
          },
          {
            "binary_name": "libparse-pidl-perl",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32"
          },
          {
            "binary_name": "libsmbclient",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32"
          },
          {
            "binary_name": "libwbclient0",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32"
          },
          {
            "binary_name": "python-samba",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32"
          },
          {
            "binary_name": "registry-tools",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32"
          },
          {
            "binary_name": "samba",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32"
          },
          {
            "binary_name": "samba-common",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32"
          },
          {
            "binary_name": "samba-common-bin",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32"
          },
          {
            "binary_name": "samba-dsdb-modules",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32"
          },
          {
            "binary_name": "samba-libs",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32"
          },
          {
            "binary_name": "samba-testsuite",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32"
          },
          {
            "binary_name": "samba-vfs-modules",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32"
          },
          {
            "binary_name": "smbclient",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32"
          },
          {
            "binary_name": "winbind",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "samba",
        "purl": "pkg:deb/ubuntu/samba@2:4.3.11+dfsg-0ubuntu0.16.04.32?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:4.3.11+dfsg-0ubuntu0.16.04.32"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:4.1.17+dfsg-4ubuntu2",
        "2:4.1.20+dfsg-1ubuntu1",
        "2:4.1.20+dfsg-1ubuntu2",
        "2:4.1.20+dfsg-1ubuntu3",
        "2:4.1.20+dfsg-1ubuntu5",
        "2:4.3.3+dfsg-1ubuntu1",
        "2:4.3.3+dfsg-1ubuntu2",
        "2:4.3.3+dfsg-1ubuntu3",
        "2:4.3.6+dfsg-1ubuntu1",
        "2:4.3.8+dfsg-0ubuntu1",
        "2:4.3.9+dfsg-0ubuntu0.16.04.1",
        "2:4.3.9+dfsg-0ubuntu0.16.04.2",
        "2:4.3.9+dfsg-0ubuntu0.16.04.3",
        "2:4.3.11+dfsg-0ubuntu0.16.04.1",
        "2:4.3.11+dfsg-0ubuntu0.16.04.3",
        "2:4.3.11+dfsg-0ubuntu0.16.04.5",
        "2:4.3.11+dfsg-0ubuntu0.16.04.6",
        "2:4.3.11+dfsg-0ubuntu0.16.04.7",
        "2:4.3.11+dfsg-0ubuntu0.16.04.8",
        "2:4.3.11+dfsg-0ubuntu0.16.04.9",
        "2:4.3.11+dfsg-0ubuntu0.16.04.10",
        "2:4.3.11+dfsg-0ubuntu0.16.04.11",
        "2:4.3.11+dfsg-0ubuntu0.16.04.12",
        "2:4.3.11+dfsg-0ubuntu0.16.04.13",
        "2:4.3.11+dfsg-0ubuntu0.16.04.15",
        "2:4.3.11+dfsg-0ubuntu0.16.04.16",
        "2:4.3.11+dfsg-0ubuntu0.16.04.17",
        "2:4.3.11+dfsg-0ubuntu0.16.04.18",
        "2:4.3.11+dfsg-0ubuntu0.16.04.19",
        "2:4.3.11+dfsg-0ubuntu0.16.04.20",
        "2:4.3.11+dfsg-0ubuntu0.16.04.21",
        "2:4.3.11+dfsg-0ubuntu0.16.04.23",
        "2:4.3.11+dfsg-0ubuntu0.16.04.24",
        "2:4.3.11+dfsg-0ubuntu0.16.04.25",
        "2:4.3.11+dfsg-0ubuntu0.16.04.26",
        "2:4.3.11+dfsg-0ubuntu0.16.04.27",
        "2:4.3.11+dfsg-0ubuntu0.16.04.28",
        "2:4.3.11+dfsg-0ubuntu0.16.04.29",
        "2:4.3.11+dfsg-0ubuntu0.16.04.30",
        "2:4.3.11+dfsg-0ubuntu0.16.04.31"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-14318",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-14323",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-14383",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ctdb",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21"
          },
          {
            "binary_name": "libnss-winbind",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21"
          },
          {
            "binary_name": "libpam-winbind",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21"
          },
          {
            "binary_name": "libparse-pidl-perl",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21"
          },
          {
            "binary_name": "libsmbclient",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21"
          },
          {
            "binary_name": "libwbclient0",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21"
          },
          {
            "binary_name": "python-samba",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21"
          },
          {
            "binary_name": "registry-tools",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21"
          },
          {
            "binary_name": "samba",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21"
          },
          {
            "binary_name": "samba-common",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21"
          },
          {
            "binary_name": "samba-common-bin",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21"
          },
          {
            "binary_name": "samba-dsdb-modules",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21"
          },
          {
            "binary_name": "samba-libs",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21"
          },
          {
            "binary_name": "samba-testsuite",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21"
          },
          {
            "binary_name": "samba-vfs-modules",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21"
          },
          {
            "binary_name": "smbclient",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21"
          },
          {
            "binary_name": "winbind",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "samba",
        "purl": "pkg:deb/ubuntu/samba@2:4.7.6+dfsg~ubuntu-0ubuntu2.21?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:4.6.7+dfsg-1ubuntu3",
        "2:4.7.1+dfsg-1ubuntu1",
        "2:4.7.3+dfsg-1ubuntu1",
        "2:4.7.4+dfsg-1ubuntu1",
        "2:4.7.6+dfsg~ubuntu-0ubuntu1",
        "2:4.7.6+dfsg~ubuntu-0ubuntu2",
        "2:4.7.6+dfsg~ubuntu-0ubuntu2.2",
        "2:4.7.6+dfsg~ubuntu-0ubuntu2.4",
        "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
        "2:4.7.6+dfsg~ubuntu-0ubuntu2.6",
        "2:4.7.6+dfsg~ubuntu-0ubuntu2.7",
        "2:4.7.6+dfsg~ubuntu-0ubuntu2.9",
        "2:4.7.6+dfsg~ubuntu-0ubuntu2.10",
        "2:4.7.6+dfsg~ubuntu-0ubuntu2.11",
        "2:4.7.6+dfsg~ubuntu-0ubuntu2.13",
        "2:4.7.6+dfsg~ubuntu-0ubuntu2.14",
        "2:4.7.6+dfsg~ubuntu-0ubuntu2.15",
        "2:4.7.6+dfsg~ubuntu-0ubuntu2.16",
        "2:4.7.6+dfsg~ubuntu-0ubuntu2.17",
        "2:4.7.6+dfsg~ubuntu-0ubuntu2.18",
        "2:4.7.6+dfsg~ubuntu-0ubuntu2.19",
        "2:4.7.6+dfsg~ubuntu-0ubuntu2.20"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-14318",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-14323",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-14383",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ctdb",
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6"
          },
          {
            "binary_name": "libnss-winbind",
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6"
          },
          {
            "binary_name": "libpam-winbind",
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6"
          },
          {
            "binary_name": "libsmbclient",
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6"
          },
          {
            "binary_name": "libwbclient0",
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6"
          },
          {
            "binary_name": "python3-samba",
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6"
          },
          {
            "binary_name": "registry-tools",
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6"
          },
          {
            "binary_name": "samba",
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6"
          },
          {
            "binary_name": "samba-common",
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6"
          },
          {
            "binary_name": "samba-common-bin",
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6"
          },
          {
            "binary_name": "samba-dsdb-modules",
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6"
          },
          {
            "binary_name": "samba-libs",
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6"
          },
          {
            "binary_name": "samba-testsuite",
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6"
          },
          {
            "binary_name": "samba-vfs-modules",
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6"
          },
          {
            "binary_name": "smbclient",
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6"
          },
          {
            "binary_name": "winbind",
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "samba",
        "purl": "pkg:deb/ubuntu/samba@2:4.11.6+dfsg-0ubuntu1.6?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:4.11.6+dfsg-0ubuntu1.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:4.10.7+dfsg-0ubuntu2",
        "2:4.10.7+dfsg-0ubuntu3",
        "2:4.11.1+dfsg-3ubuntu1",
        "2:4.11.1+dfsg-3ubuntu2",
        "2:4.11.1+dfsg-3ubuntu4",
        "2:4.11.5+dfsg-1ubuntu1",
        "2:4.11.5+dfsg-1ubuntu2",
        "2:4.11.6+dfsg-0ubuntu1",
        "2:4.11.6+dfsg-0ubuntu1.1",
        "2:4.11.6+dfsg-0ubuntu1.2",
        "2:4.11.6+dfsg-0ubuntu1.3",
        "2:4.11.6+dfsg-0ubuntu1.4",
        "2:4.11.6+dfsg-0ubuntu1.5"
      ]
    }
  ],
  "aliases": [],
  "details": "Steven French discovered that Samba incorrectly handled ChangeNotify\npermissions. A remote attacker could possibly use this issue to obtain file\nname information. (CVE-2020-14318)\n\nBas Alberts discovered that Samba incorrectly handled certain winbind\nrequests. A remote attacker could possibly use this issue to cause winbind\nto crash, resulting in a denial of service. (CVE-2020-14323)\n\nFrancis Brosnan Bl\u00e1zquez discovered that Samba incorrectly handled certain\ninvalid DNS records. A remote attacker could possibly use this issue to\ncause the DNS server to crash, resulting in a denial of service.\n(CVE-2020-14383)\n",
  "id": "USN-4611-1",
  "modified": "2026-04-22T07:36:58Z",
  "published": "2020-11-02T13:56:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4611-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-14318"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-14323"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-14383"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "samba vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2020-14318",
    "UBUNTU-CVE-2020-14323",
    "UBUNTU-CVE-2020-14383"
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.