{
  "cveId": "CVE-2020-8621",
  "url": "https://patchblox.com/security/cve/CVE-2020-8621",
  "summary": "CVE-2020-8621 is fixed in 7 products on 1 platform, first by bind9 1:9.16.1-0ubuntu2.3, released August 19, 2020. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "bind9: In BIND 9.14.0 -\u0026gt; 9.16.5, 9.17.0 -\u0026gt; 9.17.3, If a server is configured with both QNAME minimization and \u0027forward...",
  "description": "In BIND 9.14.0 -\u0026gt; 9.16.5, 9.17.0 -\u0026gt; 9.17.3, If a server is configured with both QNAME minimization and \u0027forward first\u0027 then an attacker who can send queries to it may be able to trigger the condition that will cause the server to crash. Servers that \u0027forward only\u0027 are not affected.",
  "published": "2020-08-19T17:00:00Z",
  "severity": "Medium",
  "epss": 0.03065,
  "epssPercentile": 0.877,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "bind9",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1:9.16.1-0ubuntu2.3",
      "fix": "bind9 1:9.16.1-0ubuntu2.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-bind9-1-9.16.1-0ubuntu2.3",
      "released": "2020-08-19T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bind9-dnsutils",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1:9.16.1-0ubuntu2.3",
      "fix": "bind9-dnsutils 1:9.16.1-0ubuntu2.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-bind9-dnsutils-1-9.16.1-0ubuntu2.3",
      "released": "2020-08-19T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bind9-host",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1:9.16.1-0ubuntu2.3",
      "fix": "bind9-host 1:9.16.1-0ubuntu2.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-bind9-host-1-9.16.1-0ubuntu2.3",
      "released": "2020-08-19T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bind9-libs",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1:9.16.1-0ubuntu2.3",
      "fix": "bind9-libs 1:9.16.1-0ubuntu2.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-bind9-libs-1-9.16.1-0ubuntu2.3",
      "released": "2020-08-19T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bind9-utils",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1:9.16.1-0ubuntu2.3",
      "fix": "bind9-utils 1:9.16.1-0ubuntu2.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-bind9-utils-1-9.16.1-0ubuntu2.3",
      "released": "2020-08-19T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bind9utils",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1:9.16.1-0ubuntu2.3",
      "fix": "bind9utils 1:9.16.1-0ubuntu2.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-bind9utils-1-9.16.1-0ubuntu2.3",
      "released": "2020-08-19T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dnsutils",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1:9.16.1-0ubuntu2.3",
      "fix": "dnsutils 1:9.16.1-0ubuntu2.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-dnsutils-1-9.16.1-0ubuntu2.3",
      "released": "2020-08-19T17:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}