Security advisory

{
  "id": "c91d879abe4a54b02878fd0c4cc9c71afb583b2d63bc2d2e32e621bcb7907a05",
  "url": "https://osv.dev/vulnerability/CVE-2017-15120",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2017-15120",
    "summary": "An issue has been found in the parsing of authoritative answers in PowerDNS Recursor before 4.0.8, leading to a NULL pointer dereference when parsing a specially crafted answer containing a CNAME of a different class than IN. An unauthenticated remote attacker could cause a denial of service.",
    "evidence": "osv:CVE-2017-15120",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2017-15120",
      "aliases": [
        "CVE-2017-15120"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/powerdns/pdns",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "fdd1fca63fc4949984b501ed1bca8fa01a23fc61"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "4.0.8"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "rec-4.0.7",
            "rec-4.0.6",
            "rec-4.0.5",
            "rec-4.0.5-rc2",
            "rec-4.0.5-rc1",
            "rec-4.0.4",
            "rec-4.0.3",
            "dnsdist-1.1.0-beta1",
            "rec-4.0.2",
            "rec-4.0.1",
            "auth-4.0.1",
            "rec-4.0.0",
            "auth-4.0.0",
            "auth-4.0.0-rc1",
            "auth-4.0.0-rc2",
            "rec-4.0.0-rc1",
            "rec-4.0.0-beta1",
            "auth-4.0.0-beta1",
            "auth-4.0.0-alpha3",
            "rec-4.0.0-alpha3",
            "dnsdist-1.0.0",
            "dnsdist-1.0.0-beta1",
            "rec-4.0.0-alpha2",
            "auth-4.0.0-alpha2",
            "dnsdist-1.0.0-alpha2",
            "auth-4.0.0-alpha1",
            "rec-4.0.0-alpha1",
            "dnsdist-1.0.0-alpha1",
            "auth-3.4.0",
            "auth-3.4.0-rc2",
            "rec-3.6.0",
            "auth-3.4.0-rc1",
            "rec-3.5",
            "rec-3.5-rc5",
            "rec-3.5-rc4",
            "rec-3.5-rc3",
            "rec-3.5-rc1",
            "auth-3.2-rc4",
            "auth-3.2-rc3",
            "auth-3.2-rc2",
            "auth-3.2-rc1",
            "auth-3.1-rc3",
            "auth-3.1-rc2",
            "auth-3.1-rc1",
            "rec-3.3.1",
            "rec-3.1.4",
            "rec-3.0.1",
            "rec-3-0-1",
            "rec-3.0",
            "rec-3-0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-15120.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:21.008383020Z",
      "provider": "osv",
      "references": [
        "https://www.debian.org/security/2017/dsa-4063",
        "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15120",
        "https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2017-08.html"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
              "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "8.0"
                  },
                  {
                    "last_affected": "8.0"
                  },
                  {
                    "introduced": "9.0"
                  },
                  {
                    "last_affected": "9.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2017-15120",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 430402,
  "published_at": "2018-07-27T15:29:00.343+00:00"
}