{"description": "To restrict root logins on serial ports,\nensure lines of this form do not appear in <tt>/etc/securetty</tt>:\n<pre>ttyS0\nttyS1</pre>", "rationale": "Preventing direct root login to serial port interfaces\nhelps ensure accountability for actions taken on the systems\nusing the root account.", "severity": "medium", "references": {"cis-csc": ["12", "13", "14", "15", "16", "18", "3", "5"], "cobit5": ["APO01.06", "DSS05.04", "DSS05.07", "DSS06.02"], "cui": ["3.1.1", "3.1.5"], "hipaa": ["164.308(a)(1)(ii)(B)", "164.308(a)(7)(i)", "164.308(a)(7)(ii)(A)", "164.310(a)(1)", "164.310(a)(2)(i)", "164.310(a)(2)(ii)", "164.310(a)(2)(iii)", "164.310(b)", "164.310(c)", "164.310(d)(1)", "164.310(d)(2)(iii)"], "isa-62443-2009": ["4.3.3.7.3"], "isa-62443-2013": ["SR 2.1", "SR 5.2"], "iso27001-2013": ["A.10.1.1", "A.11.1.4", "A.11.1.5", "A.11.2.1", "A.13.1.1", "A.13.1.3", "A.13.2.1", "A.13.2.3", "A.13.2.4", "A.14.1.2", "A.14.1.3", "A.6.1.2", "A.7.1.1", "A.7.1.2", "A.7.3.1", "A.8.2.2", "A.8.2.3", "A.9.1.1", "A.9.1.2", "A.9.2.3", "A.9.4.1", "A.9.4.4", "A.9.4.5"], "nerc-cip": ["CIP-003-8 R5.1.1", "CIP-003-8 R5.3", "CIP-004-6 R2.3", "CIP-007-3 R2.1", "CIP-007-3 R2.2", "CIP-007-3 R2.3", "CIP-007-3 R5.1", "CIP-007-3 R5.1.1", "CIP-007-3 R5.1.2"], "nist": ["AC-6", "CM-6(a)"], "nist-csf": ["PR.AC-4", "PR.DS-5"]}, "control_references": {}, "components": [], "identifiers": {}, "ocil_clause": "root login over serial ports is permitted", "ocil": "To check for serial port entries which permit root login,\nrun the following command:\n<pre>$ sudo grep ^ttyS/[0-9] /etc/securetty</pre>\nIf any output is returned, then root login over serial ports is permitted.", "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": {}, "inherited_platforms": [], "cpe_platform_names": ["system_with_kernel"], "inherited_cpe_platform_names": [], "bash_conditional": null, "fixes": {}, "title": "Restrict Serial Port Root Logins", "definition_location": "/aptdata/openscap/scap-security-guide/linux_os/guide/system/accounts/accounts-restrictions/root_logins/restrict_serial_port_logins/rule.yml", "template": null}