{
  "cveId": "CVE-2021-25217",
  "url": "https://patchblox.com/security/cve/CVE-2021-25217",
  "summary": "CVE-2021-25217 is fixed in 11 products on 1 platform, first by isc-dhcp-client 4.3.5-3ubuntu7.3, released May 25, 2021. It is not reported as exploited. Patch Radar priority: High.",
  "title": "dhcp-libs: The Dynamic Host Configuration Protocol (DHCP) is a protocol that allows individual devices on an IP network to get t...",
  "description": "The Dynamic Host Configuration Protocol (DHCP) is a protocol that allows individual devices on an IP network to get their own network configuration information, including an IP address, a subnet mask, and a broadcast address. The dhcp packages provide a relay agent and ISC DHCP service required to enable and administer DHCP on a network.\n\nSecurity Fix(es):\n\n* dhcp: stack-based buffer overflow when parsing statements with colon-separated hex digits in config or lease files in dhcpd and dhclient (CVE-2021-25217)\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": "2021-05-25T17:00:00Z",
  "severity": "Important",
  "cvss": 8.8,
  "epss": 0.06118,
  "epssPercentile": 0.93469,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "dhcp-client",
      "release": "RHEL 8",
      "fixedVersion": "12:4.3.6-44.el8_4.1",
      "fix": "RHSA-2021:2359",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-2359",
      "released": "2021-06-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-client",
      "release": "ol 8",
      "fixedVersion": "12:4.3.6-44.el8_4.1",
      "fix": "ELSA-2021-2359",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-2359",
      "released": "2021-06-10T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-common",
      "release": "RHEL 8",
      "fixedVersion": "12:4.3.6-44.el8_4.1",
      "fix": "RHSA-2021:2359",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-2359",
      "released": "2021-06-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-common",
      "release": "ol 8",
      "fixedVersion": "12:4.3.6-44.el8_4.1",
      "fix": "ELSA-2021-2359",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-2359",
      "released": "2021-06-10T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-libs",
      "release": "RHEL 8",
      "fixedVersion": "12:4.3.6-44.el8_4.1",
      "fix": "RHSA-2021:2359",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-2359",
      "released": "2021-06-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-libs",
      "release": "ol 8",
      "fixedVersion": "12:4.3.6-44.el8_4.1",
      "fix": "ELSA-2021-2359",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-2359",
      "released": "2021-06-10T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-relay",
      "release": "RHEL 8",
      "fixedVersion": "12:4.3.6-44.el8_4.1",
      "fix": "RHSA-2021:2359",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-2359",
      "released": "2021-06-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-relay",
      "release": "ol 8",
      "fixedVersion": "12:4.3.6-44.el8_4.1",
      "fix": "ELSA-2021-2359",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-2359",
      "released": "2021-06-10T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-server",
      "release": "RHEL 8",
      "fixedVersion": "12:4.3.6-44.el8_4.1",
      "fix": "RHSA-2021:2359",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-2359",
      "released": "2021-06-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-server",
      "release": "ol 8",
      "fixedVersion": "12:4.3.6-44.el8_4.1",
      "fix": "ELSA-2021-2359",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-2359",
      "released": "2021-06-10T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-client",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.3.5-3ubuntu7.3",
      "fix": "isc-dhcp-client 4.3.5-3ubuntu7.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-isc-dhcp-client-4.3.5-3ubuntu7.3",
      "released": "2021-05-25T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-client",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "4.4.1-2.1ubuntu5.20.04.2",
      "fix": "isc-dhcp-client 4.4.1-2.1ubuntu5.20.04.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-isc-dhcp-client-4.4.1-2.1ubuntu5.20.04.2",
      "released": "2021-05-25T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-client-ddns",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.3.5-3ubuntu7.3",
      "fix": "isc-dhcp-client-ddns 4.3.5-3ubuntu7.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-isc-dhcp-client-ddns-4.3.5-3ubuntu7.3",
      "released": "2021-05-25T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-client-ddns",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "4.4.1-2.1ubuntu5.20.04.2",
      "fix": "isc-dhcp-client-ddns 4.4.1-2.1ubuntu5.20.04.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-isc-dhcp-client-ddns-4.4.1-2.1ubuntu5.20.04.2",
      "released": "2021-05-25T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-common",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.3.5-3ubuntu7.3",
      "fix": "isc-dhcp-common 4.3.5-3ubuntu7.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-isc-dhcp-common-4.3.5-3ubuntu7.3",
      "released": "2021-05-25T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-common",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "4.4.1-2.1ubuntu5.20.04.2",
      "fix": "isc-dhcp-common 4.4.1-2.1ubuntu5.20.04.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-isc-dhcp-common-4.4.1-2.1ubuntu5.20.04.2",
      "released": "2021-05-25T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-relay",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.3.5-3ubuntu7.3",
      "fix": "isc-dhcp-relay 4.3.5-3ubuntu7.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-isc-dhcp-relay-4.3.5-3ubuntu7.3",
      "released": "2021-05-25T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-relay",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "4.4.1-2.1ubuntu5.20.04.2",
      "fix": "isc-dhcp-relay 4.4.1-2.1ubuntu5.20.04.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-isc-dhcp-relay-4.4.1-2.1ubuntu5.20.04.2",
      "released": "2021-05-25T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-server",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.3.5-3ubuntu7.3",
      "fix": "isc-dhcp-server 4.3.5-3ubuntu7.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-isc-dhcp-server-4.3.5-3ubuntu7.3",
      "released": "2021-05-25T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-server",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "4.4.1-2.1ubuntu5.20.04.2",
      "fix": "isc-dhcp-server 4.4.1-2.1ubuntu5.20.04.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-isc-dhcp-server-4.4.1-2.1ubuntu5.20.04.2",
      "released": "2021-05-25T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-server-ldap",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.3.5-3ubuntu7.3",
      "fix": "isc-dhcp-server-ldap 4.3.5-3ubuntu7.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-isc-dhcp-server-ldap-4.3.5-3ubuntu7.3",
      "released": "2021-05-25T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-server-ldap",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "4.4.1-2.1ubuntu5.20.04.2",
      "fix": "isc-dhcp-server-ldap 4.4.1-2.1ubuntu5.20.04.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-isc-dhcp-server-ldap-4.4.1-2.1ubuntu5.20.04.2",
      "released": "2021-05-25T17:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-07T06:34:28Z"
}