Security advisory

{
  "id": "18f2e1fa0891d80e8f47a91ddac6179050c1174b4cef19aaf262f4c9a56170fe",
  "url": "https://osv.dev/vulnerability/CVE-2019-12436",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-12436",
    "summary": "Samba 4.10.x before 4.10.5 has a NULL pointer dereference, leading to an AD DC LDAP server Denial of Service. This is related to an attacker using the paged search control. The attacker must have directory read access in order to attempt an exploit.",
    "evidence": "osv:CVE-2019-12436",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2019-12436",
      "aliases": [
        "CVE-2019-12436"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/samba-team/samba",
              "type": "GIT",
              "events": [
                {
                  "introduced": "25f2fe02a615e2cf906b6fa495acd8ea0aa9998a"
                },
                {
                  "fixed": "0953917629bb2e21a41013f50def0c9402d5399a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.10.0"
                      },
                      {
                        "fixed": "4.10.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "samba-4.10.4",
            "samba-4.10.1",
            "samba-4.10.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-12436.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:36.252098311Z",
      "provider": "osv",
      "references": [
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZQ3LCJNJ3ONHIRKDSKOTT6QGXALLCHVG/",
        "https://usn.ubuntu.com/4018-1/",
        "https://www.samba.org/samba/security/CVE-2019-12436.html",
        "https://www.synology.com/security/advisory/Synology_SA_19_27"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*"
            ],
            "vendor_product": "canonical:ubuntu_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "19.04"
                  },
                  {
                    "last_affected": "19.04"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2019-12436",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 433923,
  "published_at": "2019-06-19T12:15:10.233+00:00"
}