{
  "cveId": "CVE-2021-47154",
  "url": "https://patchblox.com/security/cve/CVE-2021-47154",
  "summary": "CVE-2021-47154 is fixed in libnet-cidr-lite-perl on 1 platform, first by libnet-cidr-lite-perl 0.21-2ubuntu0.1, released March 17, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "libnet-cidr-lite-perl: The Net::CIDR::Lite module before 0.22 for Perl does not properly consider extraneous zero characters at the beginnin...",
  "description": "The Net::CIDR::Lite module before 0.22 for Perl does not properly consider extraneous zero characters at the beginning of an IP address string, which (in some situations) allows attackers to bypass access control that is based on IP addresses.",
  "published": "2024-03-17T22:15:00Z",
  "severity": "medium",
  "cvss": 6.3,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L",
  "epss": 0.00489,
  "epssPercentile": 0.4231,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libnet-cidr-lite-perl",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "0.22-1",
      "fix": "DEBIAN-CVE-2021-47154",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47154",
      "released": "2024-03-18T05:15:06Z"
    },
    {
      "platform": "linux",
      "product": "libnet-cidr-lite-perl",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "0.22-1",
      "fix": "DEBIAN-CVE-2021-47154",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47154",
      "released": "2024-03-18T05:15:06Z"
    },
    {
      "platform": "linux",
      "product": "libnet-cidr-lite-perl",
      "release": "Debian 14",
      "fixedVersion": "0.22-1",
      "fix": "DEBIAN-CVE-2021-47154",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47154",
      "released": "2024-03-18T05:15:06Z"
    },
    {
      "platform": "linux",
      "product": "libnet-cidr-lite-perl",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "0.21-1ubuntu0.18.04.1~esm1",
      "fix": "libnet-cidr-lite-perl 0.21-1ubuntu0.18.04.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libnet-cidr-lite-perl-0.21-1ubuntu0.18.04.1-esm1",
      "released": "2026-04-10T15:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libnet-cidr-lite-perl",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "0.21-2ubuntu0.1",
      "fix": "libnet-cidr-lite-perl 0.21-2ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libnet-cidr-lite-perl-0.21-2ubuntu0.1",
      "released": "2024-03-17T22:15:00Z"
    }
  ],
  "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"
  }
}