Security advisory

{
  "id": "77d9c59544d37c3e15a17e8ef436c59a4c6bc5272c40dbea3ec6aaf6589252af",
  "url": "https://osv.dev/vulnerability/CVE-2019-14870",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-14870",
    "summary": "All Samba versions 4.x.x before 4.9.17, 4.10.x before 4.10.11 and 4.11.x before 4.11.3 have an issue, where the S4U (MS-SFU) Kerberos delegation model includes a feature allowing for a subset of clients to be opted out of constrained delegation in any way, either S4U2Self or regular Kerberos authentication, by forcing all tickets for these clients to be non-forwardable. In AD this is implemented by a user attribute delegation_not_allowed (aka not-delegated), which translates to disallow-forwardable. However the Samba AD DC does not do that for S4U2Self and does set the forwardable flag even if the impersonated client has the not-delegated flag set.",
    "evidence": "osv:CVE-2019-14870",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2019-14870",
      "aliases": [
        "CVE-2019-14870"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/samba-team/samba",
              "type": "GIT",
              "events": [
                {
                  "introduced": "df33344d8eb40221d60c99931690703a11d91bc2"
                },
                {
                  "fixed": "631a49647b76cc203917fa8d32e11ab3935106b3"
                },
                {
                  "introduced": "25f2fe02a615e2cf906b6fa495acd8ea0aa9998a"
                },
                {
                  "fixed": "d644dfea6f2a55b2c205a4f268372b72a06757d1"
                },
                {
                  "introduced": "d60cf580825819f11de9e50ec4c4ce591d695ad9"
                },
                {
                  "fixed": "7fc8563c2f6381c0389cdbb8c833e9bb89ec068b"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.0.0"
                      },
                      {
                        "fixed": "4.9.17"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.10.0"
                      },
                      {
                        "fixed": "4.10.11"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.11.0"
                      },
                      {
                        "fixed": "4.11.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "samba-4.11.2",
            "samba-4.10.10",
            "samba-4.10.9",
            "samba-4.11.1",
            "samba-4.11.0",
            "samba-4.10.7",
            "ldb-1.5.6",
            "samba-4.10.6",
            "ldb-1.5.5",
            "samba-4.10.1",
            "samba-4.10.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-14870.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:47.979205179Z",
      "provider": "osv",
      "references": [
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PJH3ROOFYMOATD2UEPC47P5RPBDTY77E/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WNKA4YIPV7AZR7KK3GW6L3HKGHSGJZFE/",
        "https://lists.debian.org/debian-lts-announce/2021/05/msg00023.html",
        "https://lists.debian.org/debian-lts-announce/2022/11/msg00034.html",
        "https://security.gentoo.org/glsa/202003-52",
        "https://security.gentoo.org/glsa/202310-06",
        "https://security.netapp.com/advisory/ntap-20191210-0002/",
        "https://security.netapp.com/advisory/ntap-20230216-0008/",
        "https://usn.ubuntu.com/4217-1/",
        "https://usn.ubuntu.com/4217-2/",
        "https://www.samba.org/samba/security/CVE-2019-14870.html",
        "https://www.synology.com/security/advisory/Synology_SA_19_40",
        "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14870"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*",
              "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*",
              "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
              "cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*",
              "cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*"
            ],
            "vendor_product": "canonical:ubuntu_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "14.04"
                  },
                  {
                    "last_affected": "14.04"
                  },
                  {
                    "introduced": "16.04"
                  },
                  {
                    "last_affected": "16.04"
                  },
                  {
                    "introduced": "18.04"
                  },
                  {
                    "last_affected": "18.04"
                  },
                  {
                    "introduced": "19.04"
                  },
                  {
                    "last_affected": "19.04"
                  },
                  {
                    "introduced": "19.10"
                  },
                  {
                    "last_affected": "19.10"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
              "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "9.0"
                  },
                  {
                    "last_affected": "9.0"
                  },
                  {
                    "introduced": "10.0"
                  },
                  {
                    "last_affected": "10.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*",
              "cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*"
            ],
            "vendor_product": "fedoraproject:fedora",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "30"
                  },
                  {
                    "last_affected": "30"
                  },
                  {
                    "introduced": "31"
                  },
                  {
                    "last_affected": "31"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*"
            ],
            "vendor_product": "opensuse:leap",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "15.1"
                  },
                  {
                    "last_affected": "15.1"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2019-14870",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 436653,
  "published_at": "2019-12-10T23:15:10.457+00:00"
}