{
  "cveId": "CVE-2020-22217",
  "url": "https://patchblox.com/security/cve/CVE-2020-22217",
  "summary": "CVE-2020-22217 is fixed in 3 products on 1 platform, first by libc-ares2 1.15.0-1ubuntu0.4, released August 22, 2023. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "c-ares: The c-ares C library defines asynchronous DNS (Domain Name System) requests and provides name resolving API.\n\nSecurit...",
  "description": "The c-ares C library defines asynchronous DNS (Domain Name System) requests and provides name resolving API.\n\nSecurity Fix(es):\n\n* c-ares: Heap buffer over read in ares_parse_soa_reply (CVE-2020-22217)\n\n* c-ares: Buffer Underwrite in ares_inet_net_pton() (CVE-2023-31130)\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": "2023-08-22T12:16:00Z",
  "severity": "Moderate",
  "cvss": 5.9,
  "cvssVector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00977,
  "epssPercentile": 0.62348,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "c-ares",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "1.17.1-1",
      "fix": "DEBIAN-CVE-2020-22217",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2020-22217",
      "released": "2023-08-22T19:16:19Z"
    },
    {
      "platform": "linux",
      "product": "c-ares",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "1.17.1-1",
      "fix": "DEBIAN-CVE-2020-22217",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2020-22217",
      "released": "2023-08-22T19:16:19Z"
    },
    {
      "platform": "linux",
      "product": "c-ares",
      "release": "Debian 14",
      "fixedVersion": "1.17.1-1",
      "fix": "DEBIAN-CVE-2020-22217",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2020-22217",
      "released": "2023-08-22T19:16:19Z"
    },
    {
      "platform": "linux",
      "product": "c-ares",
      "release": "RHEL 8",
      "fixedVersion": "0:1.13.0-9.el8_9.1",
      "fix": "RHSA-2023:7207",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2023-7207",
      "released": "2023-11-14T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "c-ares",
      "release": "almalinux 8",
      "fixedVersion": "1.13.0-9.el8_9.1",
      "fix": "ALSA-2023:7207",
      "url": "https://patchblox.com/security/fix/linux/alsa-2023-7207",
      "released": "2023-11-14T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "c-ares",
      "release": "ol 8",
      "fixedVersion": "0:1.13.0-9.el8_9.1",
      "fix": "ELSA-2023-7207",
      "url": "https://patchblox.com/security/fix/linux/elsa-2023-7207",
      "released": "2023-11-22T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "c-ares",
      "release": "rocky 8",
      "fixedVersion": "0:1.13.0-9.el8_9.1",
      "fix": "RLSA-2023:7207",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2023-7207",
      "released": "2023-11-28T22:42:52Z"
    },
    {
      "platform": "linux",
      "product": "c-ares-devel",
      "release": "RHEL 8",
      "fixedVersion": "0:1.13.0-9.el8_9.1",
      "fix": "RHSA-2023:7207",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2023-7207",
      "released": "2023-11-14T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "c-ares-devel",
      "release": "almalinux 8",
      "fixedVersion": "1.13.0-9.el8_9.1",
      "fix": "ALSA-2023:7207",
      "url": "https://patchblox.com/security/fix/linux/alsa-2023-7207",
      "released": "2023-11-14T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "c-ares-devel",
      "release": "ol 8",
      "fixedVersion": "0:1.13.0-9.el8_9.1",
      "fix": "ELSA-2023-7207",
      "url": "https://patchblox.com/security/fix/linux/elsa-2023-7207",
      "released": "2023-11-22T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libc-ares2",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.14.0-1ubuntu0.2\u002Besm3",
      "fix": "libc-ares2 1.14.0-1ubuntu0.2\u002Besm3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libc-ares2-1.14.0-1ubuntu0.2-esm3",
      "released": "2026-09-18T11:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libc-ares2",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.15.0-1ubuntu0.4",
      "fix": "libc-ares2 1.15.0-1ubuntu0.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libc-ares2-1.15.0-1ubuntu0.4",
      "released": "2023-08-22T12:16:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}