{"description": "The <tt>cpupower</tt> service can adjust the clock speed of supported CPUs based upon\nthe current processing load thereby conserving power and reducing heat.\n\nThe <code>cpupower</code> service can be disabled with the following command:\n<pre>$ sudo systemctl mask --now cpupower.service</pre>", "rationale": "The <tt>cpupower</tt> service is only necessary if adjusting the CPU clock speed\nprovides benefit. Traditionally this has included laptops (to enhance battery life),\nbut may also apply to server or desktop environments where conserving power is\nhighly desirable or necessary.", "severity": "low", "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"]}, "control_references": {}, "components": [], "identifiers": {}, "ocil_clause": "the \"cpupower\" is loaded and not masked", "ocil": "To check that the <code>cpupower</code> service is disabled in system boot configuration,\nrun the following command:\n<pre>$ sudo systemctl is-enabled <code>cpupower</code></pre>\nOutput should indicate the <code>cpupower</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>cpupower</code><br/> disabled</pre>\n\nRun the following command to verify <code>cpupower</code> is not active (i.e. not running) through current runtime configuration:\n<pre>$ sudo systemctl is-active cpupower</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>cpupower</code> is masked, run the following command:\n<pre>$ sudo systemctl show <code>cpupower</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_cpupower_disabled.sh", "relative_path": "ubuntu2204/checks/sce/service_cpupower_disabled.sh"}, "inherited_platforms": [], "cpe_platform_names": ["system_with_kernel"], "inherited_cpe_platform_names": [], "bash_conditional": null, "fixes": {}, "title": "Disable CPU Speed (cpupower)", "definition_location": "/aptdata/openscap/scap-security-guide/linux_os/guide/services/base/service_cpupower_disabled/rule.yml", "template": {"name": "service_disabled", "vars": {"servicename": "cpupower", "packagename": "kernel-tools"}, "backends": {}}}