{
  "cveId": "CVE-2020-12663",
  "url": "https://patchblox.com/security/cve/CVE-2020-12663",
  "summary": "CVE-2020-12663 is fixed in 9 products on 1 platform, first by libunbound2 1.6.7-1ubuntu2.3, released May 19, 2020. It is not reported as exploited. Patch Radar priority: High.",
  "title": "python3-unbound: The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver",
  "description": "The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. \n\nSecurity Fix(es):\n\n* unbound: amplification of an incoming query into a large number of queries directed to a target (CVE-2020-12662)\n\n* unbound: infinite loop via malformed DNS answers received from upstream servers (CVE-2020-12663)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
  "published": "2020-05-19T04:00:00Z",
  "severity": "Important",
  "cvss": 7.5,
  "epss": 0.03588,
  "epssPercentile": 0.89495,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libunbound2",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.6.7-1ubuntu2.3",
      "fix": "libunbound2 1.6.7-1ubuntu2.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libunbound2-1.6.7-1ubuntu2.3",
      "released": "2020-05-19T04:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libunbound8",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.9.4-2ubuntu1.1",
      "fix": "libunbound8 1.9.4-2ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libunbound8-1.9.4-2ubuntu1.1",
      "released": "2020-05-19T04:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python-unbound",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.6.7-1ubuntu2.3",
      "fix": "python-unbound 1.6.7-1ubuntu2.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-python-unbound-1.6.7-1ubuntu2.3",
      "released": "2020-05-19T04:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python-unbound",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.9.4-2ubuntu1.1",
      "fix": "python-unbound 1.9.4-2ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-python-unbound-1.9.4-2ubuntu1.1",
      "released": "2020-05-19T04:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-unbound",
      "release": "RHEL 8",
      "fixedVersion": "0:1.7.3-11.el8_2",
      "fix": "RHSA-2020:2416",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2020-2416",
      "released": "2020-06-08T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-unbound",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.6.7-1ubuntu2.3",
      "fix": "python3-unbound 1.6.7-1ubuntu2.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-python3-unbound-1.6.7-1ubuntu2.3",
      "released": "2020-05-19T04:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-unbound",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.9.4-2ubuntu1.1",
      "fix": "python3-unbound 1.9.4-2ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-python3-unbound-1.9.4-2ubuntu1.1",
      "released": "2020-05-19T04:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-unbound",
      "release": "ol 8",
      "fixedVersion": "0:1.7.3-11.el8_2",
      "fix": "ELSA-2020-2416",
      "url": "https://patchblox.com/security/fix/linux/elsa-2020-2416",
      "released": "2020-06-08T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "unbound",
      "release": "RHEL 8",
      "fixedVersion": "0:1.7.3-11.el8_2",
      "fix": "RHSA-2020:2416",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2020-2416",
      "released": "2020-06-08T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "unbound",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.6.7-1ubuntu2.3",
      "fix": "unbound 1.6.7-1ubuntu2.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-unbound-1.6.7-1ubuntu2.3",
      "released": "2020-05-19T04:00:00Z"
    },
    {
      "platform": "linux",
      "product": "unbound",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.9.4-2ubuntu1.1",
      "fix": "unbound 1.9.4-2ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-unbound-1.9.4-2ubuntu1.1",
      "released": "2020-05-19T04:00:00Z"
    },
    {
      "platform": "linux",
      "product": "unbound",
      "release": "ol 8",
      "fixedVersion": "0:1.7.3-11.el8_2",
      "fix": "ELSA-2020-2416",
      "url": "https://patchblox.com/security/fix/linux/elsa-2020-2416",
      "released": "2020-06-08T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "unbound-anchor",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.6.7-1ubuntu2.3",
      "fix": "unbound-anchor 1.6.7-1ubuntu2.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-unbound-anchor-1.6.7-1ubuntu2.3",
      "released": "2020-05-19T04:00:00Z"
    },
    {
      "platform": "linux",
      "product": "unbound-anchor",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.9.4-2ubuntu1.1",
      "fix": "unbound-anchor 1.9.4-2ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-unbound-anchor-1.9.4-2ubuntu1.1",
      "released": "2020-05-19T04:00:00Z"
    },
    {
      "platform": "linux",
      "product": "unbound-devel",
      "release": "RHEL 8",
      "fixedVersion": "0:1.7.3-11.el8_2",
      "fix": "RHSA-2020:2416",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2020-2416",
      "released": "2020-06-08T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "unbound-devel",
      "release": "ol 8",
      "fixedVersion": "0:1.7.3-11.el8_2",
      "fix": "ELSA-2020-2416",
      "url": "https://patchblox.com/security/fix/linux/elsa-2020-2416",
      "released": "2020-06-08T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "unbound-host",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.6.7-1ubuntu2.3",
      "fix": "unbound-host 1.6.7-1ubuntu2.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-unbound-host-1.6.7-1ubuntu2.3",
      "released": "2020-05-19T04:00:00Z"
    },
    {
      "platform": "linux",
      "product": "unbound-host",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.9.4-2ubuntu1.1",
      "fix": "unbound-host 1.9.4-2ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-unbound-host-1.9.4-2ubuntu1.1",
      "released": "2020-05-19T04:00:00Z"
    },
    {
      "platform": "linux",
      "product": "unbound-libs",
      "release": "RHEL 8",
      "fixedVersion": "0:1.7.3-11.el8_2",
      "fix": "RHSA-2020:2416",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2020-2416",
      "released": "2020-06-08T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "unbound-libs",
      "release": "ol 8",
      "fixedVersion": "0:1.7.3-11.el8_2",
      "fix": "ELSA-2020-2416",
      "url": "https://patchblox.com/security/fix/linux/elsa-2020-2416",
      "released": "2020-06-08T00:00:00Z"
    }
  ],
  "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"
  }
}