{"description": "The rdisc service implements the client side of the ICMP\nInternet Router Discovery Protocol (IRDP), which allows discovery of routers on\nthe local subnet. If a router is discovered then the local routing table is\nupdated with a corresponding default route. By default this daemon is disabled.\n\nThe rdisc service can be disabled with the following command:\n
$ sudo systemctl mask --now rdisc.service
", "rationale": "General-purpose systems typically have their network and routing\ninformation configured statically by a system administrator. Workstations or\nsome special-purpose systems often use DHCP (instead of IRDP) to retrieve\ndynamic network configuration information.", "severity": "medium", "references": {"cis-csc": ["1", "11", "12", "13", "14", "15", "16", "18", "3", "4", "6", "8", "9"], "cobit5": ["APO01.06", "APO13.01", "BAI10.01", "BAI10.02", "BAI10.03", "BAI10.05", "DSS01.04", "DSS01.05", "DSS03.01", "DSS05.02", "DSS05.03", "DSS05.04", "DSS05.05", "DSS05.07", "DSS06.02", "DSS06.06"], "isa-62443-2009": ["4.2.3.4", "4.3.3.4", "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", "4.4.3.3"], "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 3.1", "SR 3.5", "SR 3.8", "SR 4.1", "SR 4.3", "SR 5.1", "SR 5.2", "SR 5.3", "SR 7.1", "SR 7.6"], "iso27001-2013": ["A.10.1.1", "A.11.1.4", "A.11.1.5", "A.11.2.1", "A.11.2.6", "A.12.1.1", "A.12.1.2", "A.12.5.1", "A.12.6.2", "A.13.1.1", "A.13.1.2", "A.13.1.3", "A.13.2.1", "A.13.2.2", "A.13.2.3", "A.13.2.4", "A.14.1.2", "A.14.1.3", "A.14.2.2", "A.14.2.3", "A.14.2.4", "A.6.1.2", "A.6.2.1", "A.6.2.2", "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"], "nist": ["AC-4", "CM-7(a)", "CM-7(b)", "CM-6(a)"], "nist-csf": ["DE.AE-1", "ID.AM-3", "PR.AC-3", "PR.AC-5", "PR.DS-5", "PR.IP-1", "PR.PT-3", "PR.PT-4"]}, "control_references": {}, "components": [], "identifiers": {}, "ocil_clause": "the \"rdisc\" is loaded and not masked", "ocil": "To check that the rdisc service is disabled in system boot configuration,\nrun the following command:\n
$ sudo systemctl is-enabled rdisc
\nOutput should indicate the rdisc service has either not been installed,\nor has been disabled at all runlevels, as shown in the example below:\n
$ sudo systemctl is-enabled rdisc
 disabled
\n\nRun the following command to verify rdisc is not active (i.e. not running) through current runtime configuration:\n
$ sudo systemctl is-active rdisc
\n\nIf the service is not running the command will return the following output:\n
inactive
\n\nThe service will also be masked, to check that the rdisc is masked, run the following command:\n
$ sudo systemctl show rdisc | grep \"LoadState\\|UnitFileState\"
\n\nIf the service is masked the command will return the following outputs:\n\n
LoadState=masked
\n\n
UnitFileState=masked
", "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_rdisc_disabled.sh", "relative_path": "ubuntu2204/checks/sce/service_rdisc_disabled.sh"}, "inherited_platforms": [], "cpe_platform_names": ["system_with_kernel"], "inherited_cpe_platform_names": [], "bash_conditional": null, "fixes": {}, "title": "Disable Network Router Discovery Daemon (rdisc)", "definition_location": "/aptdata/openscap/scap-security-guide/linux_os/guide/services/base/service_rdisc_disabled/rule.yml", "template": {"name": "service_disabled", "vars": {"servicename": "rdisc", "packagename": "iputils"}, "backends": {}}}