Security advisory

{
  "id": "a04f274bc0904354fa8c56332c584eda686b112730ea252e758ab7c938dc5d11",
  "url": "https://osv.dev/vulnerability/CVE-2020-24698",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-24698",
    "summary": "An issue was discovered in PowerDNS Authoritative through 4.3.0 when --enable-experimental-gss-tsig is used. A remote, unauthenticated attacker might be able to cause a double-free, leading to a crash or possibly arbitrary code execution. by sending crafted queries with a GSS-TSIG signature.",
    "evidence": "osv:CVE-2020-24698",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2020-24698",
      "aliases": [
        "CVE-2020-24698"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/powerdns/pdns",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "f8e019026f5a1eff4b56a90a39c4acac95ae9dc4"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:powerdns:authoritative:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "4.3.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "rec-4.3.0",
            "rec-4.3.0-rc2",
            "rec-4.3.0-rc1",
            "rec-4.3.0-beta2",
            "rec-4.3.0-beta1",
            "auth-4.3.0-alpha1",
            "dnsdist-1.4.0",
            "dnsdist-1.4.0-rc5",
            "rec-4.3.0-alpha3",
            "rec-4.3.0-alpha2",
            "dnsdist-1.4.0-rc4",
            "dnsdist-1.4.0-rc3",
            "rec-4.3.0-alpha1",
            "dnsdist-1.4.0-rc2",
            "dnsdist-1.4.0-rc1",
            "auth-4.2.0-rc2",
            "dnsdist-1.4.0-beta1",
            "rec-4.2.0-rc1",
            "rec-4.2.0-beta1",
            "dnsdist-1.4.0-alpha2",
            "dnsdist-1.4.0-alpha1",
            "auth-4.2.0-rc1",
            "dnsdist-1.3.3",
            "auth-4.2.0-beta1",
            "rec-4.2.0-alpha1",
            "auth-4.2.0-alpha1",
            "dnsdist-1.3.2",
            "dnsdist-1.3.1",
            "dnsdist-1.3.0",
            "dnsdist-1.2.0",
            "auth-4.1.0",
            "rec-4.1.0",
            "rec-4.1.0-rc3",
            "auth-4.1.0-rc3",
            "auth-4.1.0-rc2",
            "rec-4.1.0-rc2",
            "rec-4.1.0-rc1",
            "auth-4.1.0-rc1",
            "rec-4.1.0-alpha1",
            "dnsdist-1.1.0",
            "dnsdist-1.1.0-beta2",
            "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-2020-24698.json"
          }
        }
      ],
      "modified": "2026-10-24T10:31:03.949655699Z",
      "provider": "osv",
      "references": [
        "https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2020-06.html"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-24698",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 440392,
  "published_at": "2020-10-02T09:15:13.757+00:00"
}