{"description": "The <tt>dhcpd</tt> service should be disabled on\nany system that does not need to act as a DHCP server.\n\n\nThe <code>dhcpd</code> service can be disabled with the following command:\n<pre>$ sudo systemctl mask --now dhcpd.service</pre>", "rationale": "Unmanaged or unintentionally activated DHCP servers may provide faulty information\nto clients, interfering with the operation of a legitimate site\nDHCP server if there is one.", "severity": "medium", "references": {"cis-csc": ["11", "14", "3", "9"], "cobit5": ["BAI10.01", "BAI10.02", "BAI10.03", "BAI10.05", "DSS05.02", "DSS05.05", "DSS06.06"], "isa-62443-2009": ["4.3.3.5.1", "4.3.3.5.2", "4.3.3.5.3", "4.3.3.5.4", "4.3.3.5.5", "4.3.3.5.6", "4.3.3.5.7", "4.3.3.5.8", "4.3.3.6.1", "4.3.3.6.2", "4.3.3.6.3", "4.3.3.6.4", "4.3.3.6.5", "4.3.3.6.6", "4.3.3.6.7", "4.3.3.6.8", "4.3.3.6.9", "4.3.3.7.1", "4.3.3.7.2", "4.3.3.7.3", "4.3.3.7.4", "4.3.4.3.2", "4.3.4.3.3"], "isa-62443-2013": ["SR 1.1", "SR 1.10", "SR 1.11", "SR 1.12", "SR 1.13", "SR 1.2", "SR 1.3", "SR 1.4", "SR 1.5", "SR 1.6", "SR 1.7", "SR 1.8", "SR 1.9", "SR 2.1", "SR 2.2", "SR 2.3", "SR 2.4", "SR 2.5", "SR 2.6", "SR 2.7", "SR 7.6"], "iso27001-2013": ["A.12.1.2", "A.12.5.1", "A.12.6.2", "A.14.2.2", "A.14.2.3", "A.14.2.4", "A.9.1.2"], "nist": ["CM-7(a)", "CM-7(b)", "CM-6(a)"], "nist-csf": ["PR.IP-1", "PR.PT-3"], "cis": ["2.1.3"]}, "control_references": {"cis": ["2.1.3"]}, "components": [], "identifiers": {}, "ocil_clause": "the \"dhcpd\" is loaded and not masked", "ocil": "To check that the <code>dhcpd</code> service is disabled in system boot configuration,\nrun the following command:\n<pre>$ sudo systemctl is-enabled <code>dhcpd</code></pre>\nOutput should indicate the <code>dhcpd</code> service has either not been installed,\nor has been disabled at all runlevels, as shown in the example below:\n<pre>$ sudo systemctl is-enabled <code>dhcpd</code><br/> disabled</pre>\n\nRun the following command to verify <code>dhcpd</code> is not active (i.e. not running) through current runtime configuration:\n<pre>$ sudo systemctl is-active dhcpd</pre>\n\nIf the service is not running the command will return the following output:\n<pre>inactive</pre>\n\nThe service will also be masked, to check that the <code>dhcpd</code> is masked, run the following command:\n<pre>$ sudo systemctl show <code>dhcpd</code> | grep \"LoadState\\|UnitFileState\"</pre>\n\nIf the service is masked the command will return the following outputs:\n\n<pre>LoadState=masked</pre>\n\n<pre>UnitFileState=masked</pre>", "oval_external_content": null, "fixtext": "", "checktext": "", "vuldiscussion": "", "srg_requirement": "", "warnings": [], "conflicts": [], "requires": [], "policy_specific_content": {}, "platform": "system_with_kernel", "platforms": ["system_with_kernel"], "sce_metadata": {"check-import": "stdout", "platform": ["multi_platform_all"], "environment": "any", "filename": "service_dhcpd_disabled.sh", "relative_path": "ubuntu2204/checks/sce/service_dhcpd_disabled.sh"}, "inherited_platforms": [], "cpe_platform_names": ["system_with_kernel"], "inherited_cpe_platform_names": [], "bash_conditional": null, "fixes": {}, "title": "Disable DHCP Service", "definition_location": "/aptdata/openscap/scap-security-guide/linux_os/guide/services/dhcp/disabling_dhcp_server/service_dhcpd_disabled/rule.yml", "template": {"name": "service_disabled", "vars": {"servicename": "dhcpd", "packagename": "dhcp"}, "backends": {}}}