Security advisory

{
  "id": "4bd7e0842844ad9526336d0074fd9c9d3d0c2636a21a982db5380c2093540e7a",
  "url": "https://osv.dev/vulnerability/CVE-2018-13441",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-13441",
    "summary": "qh_help in Nagios Core version 4.4.1 and earlier is prone to a NULL pointer dereference vulnerability, which allows attacker to cause a local denial-of-service condition by sending a crafted payload to the listening UNIX socket.",
    "evidence": "osv:CVE-2018-13441",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2018-13441",
      "aliases": [
        "CVE-2018-13441"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/nagiosenterprises/nagioscore",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "345fd4e8257085ce7f3806ee4fb04008919f24e5"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:nagios:nagios:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "4.4.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "nagios-4.4.1",
            "nagios-4.4.0",
            "nagios-4.3.4",
            "nagios-4.3.3",
            "nagios-4.3.2",
            "nagios-4.3.1",
            "release-4.3.0",
            "nagios-4.3.0",
            "release-4.2.4",
            "nagios-4.2.2",
            "4.2.1",
            "nagios-4.1.1",
            "nagios-4.1.0",
            "nagios-4.1.0rc2",
            "nagios-4.0.6",
            "nagios-4.0.5",
            "nagios-4.0.4",
            "nagios-4.0.0",
            "nagios-4.0.0-beta4",
            "nagios-4.0.0-beta3",
            "nagios-4.0.0-beta2",
            "nagios-4.0.0-beta1",
            "nagios-3.4.1",
            "nagios-3.4.0",
            "nagios-3.3.1",
            "nagios-3.2.3",
            "nagios-3.2.2",
            "nagios-3.2.1",
            "nagios-3.2.0",
            "nagios-3.1.2",
            "nagios-3.1.1",
            "nagios-3.1.0",
            "nagios-3.0.6",
            "nagios-3.0.5",
            "nagios-3.0.4",
            "nagios-3.0.3",
            "nagios-3.0.2",
            "nagios-3.0.1",
            "nagios-3.0",
            "nagios-3.0rc3",
            "nagios-3.0rc2",
            "nagios-3.0rc1",
            "nagios-3.0b7",
            "nagios-3.0b6",
            "nagios-3.0b5",
            "nagios-3.0b4",
            "nagios-3.0b3",
            "nagios-3.0b2",
            "nagios-3.0b1",
            "nagios-3.0a5",
            "nagios-3.0a4",
            "nagios-3.0a3",
            "nagios-3.0a2",
            "nagios-3.0a1",
            "nagios-2.0",
            "nagios-2.0rc1",
            "nagios-2.0b6",
            "nagios-2.0.b5",
            "nagios-2.0b4",
            "nagios-2.0b3",
            "nagios-2.0b2",
            "nagios-2.0b1",
            "nagios-1.0b6",
            "nagios-1.0b5",
            "nagios-1.0b4",
            "nagios-1.0b3",
            "nagios-1.0b2",
            "nagios-1.0b1",
            "nagios-1.0a7",
            "nagios-1.0a6"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-13441.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:17.158765994Z",
      "provider": "osv",
      "references": [
        "https://knowledge.opsview.com/v5.3/docs/whats-new",
        "https://knowledge.opsview.com/v5.4/docs/whats-new",
        "https://gist.github.com/fakhrizulkifli/8df4a174158df69ebd765f824bd736b8",
        "https://www.exploit-db.com/exploits/45082/"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2018-13441",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 429500,
  "published_at": "2018-07-12T18:29:00.42+00:00"
}