{
  "cveId": "CVE-2022-3204",
  "url": "https://patchblox.com/security/cve/CVE-2022-3204",
  "summary": "CVE-2022-3204 is fixed in 16 products on 1 platform, first by libunbound2 1.6.7-1ubuntu2.6, released September 26, 2022. It is not reported as exploited. Patch Radar priority: High.",
  "title": "unbound: This update for unbound fixes the following issues:\n\nunbound was updated to 1.20.0:\n\n* A lot of bugfixes and added fe...",
  "description": "This update for unbound fixes the following issues:\n\nunbound was updated to 1.20.0:\n\n* A lot of bugfixes and added features.\n  For a complete list take a look at the changelog located at:\n  /usr/share/doc/packages/unbound/Changelog or\n  https://www.nlnetlabs.nl/projects/unbound/download/\n\nSome Noteworthy Changes:\n\n* Removed DLV. The DLV has been decommisioned since unbound\n  1.5.4 and has been advised to stop using it since. The use of\n  dlv options displays a warning.\n* Remove EDNS lame procedure, do not re-query without EDNS after\n  timeout.\n* Add DNS over HTTPS\n* libunbound has been upgraded to major version 8\n\nSecurity Fixes:\n* CVE-2023-50387: DNSSEC verification complexity can be\n  exploited to exhaust CPU resources and stall DNS resolvers.  [bsc#1219823]\n* CVE-2023-50868: NSEC3 closest encloser proof can exhaust CPU.\n  [bsc#1219826]\n* CVE-2022-30698: Novel \u0027ghost domain names\u0027 attack by\n  introducing subdomain delegations.  [bsc#1202033]\n* CVE-2022-30699: Novel \u0027ghost domain names\u0027 attack by\n  updating almost expired delegation information.  [bsc#1202031]\n* CVE-2022-3204: NRDelegation attack leads to uncontrolled\n  resource consumption (Non-Responsive Delegation Attack).  [bsc#1203643]\n\nPackaging Changes:\n\n* Use prefixes instead of sudo in unbound.service\n* Remove no longer necessary BuildRequires: libfstrm-devel and\n  libprotobuf-c-devel",
  "published": "2022-09-26T07:15:00Z",
  "severity": "Moderate",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.01647,
  "epssPercentile": 0.76612,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libunbound2",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.6.7-1ubuntu2.6",
      "fix": "libunbound2 1.6.7-1ubuntu2.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libunbound2-1.6.7-1ubuntu2.6",
      "released": "2022-09-26T07:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libunbound8",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.9.4-2ubuntu1.4",
      "fix": "libunbound8 1.9.4-2ubuntu1.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libunbound8-1.9.4-2ubuntu1.4",
      "released": "2022-09-26T07:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libunbound8",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1.13.1-1ubuntu5.3",
      "fix": "libunbound8 1.13.1-1ubuntu5.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libunbound8-1.13.1-1ubuntu5.3",
      "released": "2022-09-26T07:15:00Z"
    },
    {
      "platform": "linux",
      "product": "python-unbound",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.6.7-1ubuntu2.6",
      "fix": "python-unbound 1.6.7-1ubuntu2.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-python-unbound-1.6.7-1ubuntu2.6",
      "released": "2022-09-26T07:15:00Z"
    },
    {
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      "product": "python-unbound",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.9.4-2ubuntu1.4",
      "fix": "python-unbound 1.9.4-2ubuntu1.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-python-unbound-1.9.4-2ubuntu1.4",
      "released": "2022-09-26T07:15:00Z"
    },
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      "platform": "linux",
      "product": "python3-unbound",
      "release": "RHEL 8",
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      "fix": "RHSA-2023:2771",
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      "released": "2023-05-16T00:00:00Z"
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      "fix": "RHSA-2023:2370",
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      "released": "2023-05-09T00:00:00Z"
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-python3-unbound-1.6.7-1ubuntu2.6",
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      "release": "Ubuntu 22.04.1 LTS (jammy)",
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      "released": "2022-09-26T07:15:00Z"
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      "product": "python3-unbound",
      "release": "almalinux 8",
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      "fix": "ALSA-2023:2771",
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      "fix": "ALAS2023-2023-078",
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      "fix": "ELSA-2023-2771",
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      "release": "ol 9",
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      "fix": "ELSA-2023-2370",
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      "fix": "ALAS2023-2023-078",
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      "released": "2023-02-17T20:46:00Z"
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    {
      "platform": "linux",
      "product": "unbound",
      "release": "Debian 12.15 (bookworm)",
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      "fix": "DEBIAN-CVE-2022-3204",
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      "released": "2022-09-26T14:15:11Z"
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      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-3204",
      "released": "2022-09-26T14:15:11Z"
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      "release": "Debian 14",
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      "released": "2022-09-26T14:15:11Z"
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    {
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      "released": "2024-06-04T11:50:47Z"
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  "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"
  }
}