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SLEM-05-654210 - SLEM 5 must audit all uses of the sudoers file and all files in the "/etc/sudoers.d/" directory.

Information

Reconstruction of harmful events or forensic analysis is not possible if audit records do not contain enough information.

At a minimum, the organization must audit the full-text recording of privileged access commands. The organization must maintain audit trails in sufficient detail to reconstruct events to determine the cause and impact of compromise.

Solution

Configure SLEM 5 to generate audit records when successful/unsuccessful attempts to access the "/etc/sudoers" file and files in the "/etc/sudoers.d/" directory.

Add or modify the following lines in "/etc/audit/rules.d/audit.rules" file:

-w /etc/sudoers -p wa -k privileged-actions

-w /etc/sudoers.d -p wa -k privileged-actions

To reload the rules file, restart the audit daemon:

 > sudo systemctl restart auditd.service

or issue the following command:

 > sudo augenrules --load

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_SLEM_5_V1R4_STIG.zip

Item Details

Category: AUDIT AND ACCOUNTABILITY, MAINTENANCE

References: 800-53|AU-3, 800-53|AU-3(1), 800-53|AU-12c., 800-53|MA-4(1)(a), CAT|II, CCI|CCI-000130, CCI|CCI-000135, CCI|CCI-000172, CCI|CCI-002884, Rule-ID|SV-261465r996802_rule, STIG-ID|SLEM-05-654210, Vuln-ID|V-261465

Plugin: Unix

Control ID: 7f58e595be177ae0a9acb64e7c66f8e576c7b83fcaaec468eba7e73ac6c8002c