{
  "cveId": "CVE-2018-5733",
  "url": "https://patchblox.com/security/cve/CVE-2018-5733",
  "summary": "CVE-2018-5733 is fixed in 6 products on 1 platform, first by isc-dhcp-client 4.3.5-3ubuntu5, released February 28, 2018. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "isc-dhcp-client: A malicious client which is allowed to send very large amounts of traffic (billions of packets) to a DHCP server can...",
  "description": "A malicious client which is allowed to send very large amounts of traffic (billions of packets) to a DHCP server can eventually overflow a 32-bit reference counter, potentially causing dhcpd to crash. Affects ISC DHCP 4.1.0 -\u0026gt; 4.1-ESV-R15, 4.2.0 -\u0026gt; 4.2.8, 4.3.0 -\u0026gt; 4.3.6, 4.4.0.",
  "published": "2018-02-28T16:00:00Z",
  "severity": "Medium",
  "epss": 0.20242,
  "epssPercentile": 0.97481,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "isc-dhcp-client",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.3.5-3ubuntu5",
      "fix": "isc-dhcp-client 4.3.5-3ubuntu5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-isc-dhcp-client-4.3.5-3ubuntu5",
      "released": "2018-02-28T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-client-ddns",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.3.5-3ubuntu5",
      "fix": "isc-dhcp-client-ddns 4.3.5-3ubuntu5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-isc-dhcp-client-ddns-4.3.5-3ubuntu5",
      "released": "2018-02-28T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-common",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.3.5-3ubuntu5",
      "fix": "isc-dhcp-common 4.3.5-3ubuntu5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-isc-dhcp-common-4.3.5-3ubuntu5",
      "released": "2018-02-28T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-relay",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.3.5-3ubuntu5",
      "fix": "isc-dhcp-relay 4.3.5-3ubuntu5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-isc-dhcp-relay-4.3.5-3ubuntu5",
      "released": "2018-02-28T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-server",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.3.5-3ubuntu5",
      "fix": "isc-dhcp-server 4.3.5-3ubuntu5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-isc-dhcp-server-4.3.5-3ubuntu5",
      "released": "2018-02-28T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-server-ldap",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.3.5-3ubuntu5",
      "fix": "isc-dhcp-server-ldap 4.3.5-3ubuntu5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-isc-dhcp-server-ldap-4.3.5-3ubuntu5",
      "released": "2018-02-28T16:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-07T12:40:37Z"
}