{
  "cveId": "CVE-2021-20314",
  "url": "https://patchblox.com/security/cve/CVE-2021-20314",
  "summary": "CVE-2021-20314 is fixed in 3 products on 1 platform, first by libmail-spf-xs-perl 1.2.10-7ubuntu0.18.04.1~esm1, released January 19, 2022. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "libmail-spf-xs-perl: Stack buffer overflow in libspf2 versions below 1.2.11 when processing certain SPF macros can lead to Denial of servi...",
  "description": "Stack buffer overflow in libspf2 versions below 1.2.11 when processing certain SPF macros can lead to Denial of service and potentially code execution via malicious crafted SPF explanation messages.",
  "published": "2021-08-10T17:00:00Z",
  "severity": "Medium",
  "epss": 0.02833,
  "epssPercentile": 0.86727,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libmail-spf-xs-perl",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.2.10-7ubuntu0.18.04.1~esm1",
      "fix": "libmail-spf-xs-perl 1.2.10-7ubuntu0.18.04.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libmail-spf-xs-perl-1.2.10-7ubuntu0.18.04.1-esm1",
      "released": "2022-01-19T10:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libmail-spf-xs-perl",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.2.10-7\u002Bdeb9u2build0.20.04.1",
      "fix": "libmail-spf-xs-perl 1.2.10-7\u002Bdeb9u2build0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libmail-spf-xs-perl-1.2.10-7-deb9u2build0.20.04.1",
      "released": "2022-01-19T10:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libspf2-2",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.2.10-7ubuntu0.18.04.1~esm1",
      "fix": "libspf2-2 1.2.10-7ubuntu0.18.04.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libspf2-2-1.2.10-7ubuntu0.18.04.1-esm1",
      "released": "2022-01-19T10:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libspf2-2",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.2.10-7\u002Bdeb9u2build0.20.04.1",
      "fix": "libspf2-2 1.2.10-7\u002Bdeb9u2build0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libspf2-2-1.2.10-7-deb9u2build0.20.04.1",
      "released": "2022-01-19T10:15:00Z"
    },
    {
      "platform": "linux",
      "product": "spfquery",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.2.10-7ubuntu0.18.04.1~esm1",
      "fix": "spfquery 1.2.10-7ubuntu0.18.04.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-spfquery-1.2.10-7ubuntu0.18.04.1-esm1",
      "released": "2022-01-19T10:15:00Z"
    },
    {
      "platform": "linux",
      "product": "spfquery",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.2.10-7\u002Bdeb9u2build0.20.04.1",
      "fix": "spfquery 1.2.10-7\u002Bdeb9u2build0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-spfquery-1.2.10-7-deb9u2build0.20.04.1",
      "released": "2022-01-19T10:15:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}