{
  "cveId": "CVE-2021-3909",
  "url": "https://patchblox.com/security/cve/CVE-2021-3909",
  "summary": "CVE-2021-3909 is fixed in 3 products on 1 platform, first by DEBIAN-CVE-2021-3909, released November 11, 2021. It is not reported as exploited. Patch Radar priority: High.",
  "title": "cfrpki: OctoRPKI does not limit the length of a connection, allowing for a slowloris DOS attack to take place which makes Oct...",
  "description": "OctoRPKI does not limit the length of a connection, allowing for a slowloris DOS attack to take place which makes OctoRPKI wait forever. Specifically, the repository that OctoRPKI sends HTTP requests to will keep the connection open for a day before a response is returned, but does keep drip feeding new bytes to keep the connection alive.",
  "published": "2021-11-11T22:15:07Z",
  "severity": "high",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.01575,
  "epssPercentile": 0.75595,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "cfrpki",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "1.4.0-1",
      "fix": "DEBIAN-CVE-2021-3909",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-3909",
      "released": "2021-11-11T22:15:07Z"
    },
    {
      "platform": "linux",
      "product": "fort-validator",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "1.5.3-1",
      "fix": "DEBIAN-CVE-2021-3909",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-3909",
      "released": "2021-11-11T22:15:07Z"
    },
    {
      "platform": "linux",
      "product": "fort-validator",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "1.5.3-1",
      "fix": "DEBIAN-CVE-2021-3909",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-3909",
      "released": "2021-11-11T22:15:07Z"
    },
    {
      "platform": "linux",
      "product": "fort-validator",
      "release": "Debian 14",
      "fixedVersion": "1.5.3-1",
      "fix": "DEBIAN-CVE-2021-3909",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-3909",
      "released": "2021-11-11T22:15:07Z"
    },
    {
      "platform": "linux",
      "product": "rpki-client",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "7.5-1",
      "fix": "DEBIAN-CVE-2021-3909",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-3909",
      "released": "2021-11-11T22:15:07Z"
    },
    {
      "platform": "linux",
      "product": "rpki-client",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "7.5-1",
      "fix": "DEBIAN-CVE-2021-3909",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-3909",
      "released": "2021-11-11T22:15:07Z"
    },
    {
      "platform": "linux",
      "product": "rpki-client",
      "release": "Debian 14",
      "fixedVersion": "7.5-1",
      "fix": "DEBIAN-CVE-2021-3909",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-3909",
      "released": "2021-11-11T22:15:07Z"
    }
  ],
  "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"
  }
}