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

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-261465	SRG-OS-000037-GPOS-00015	SLEM-05-654210	SV-261465r996802_rule	2024-06-04	1

Description
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.

ℹ️ Check
Verify SLEM 5 generates audit records when successful/unsuccessful attempts to access the "/etc/sudoers" file and files in the "/etc/sudoers.d/" directory with the following command: > sudo auditctl -l \| grep -w '/etc/sudoers' -w /etc/sudoers -p wa -k privileged-actions -w /etc/sudoers.d -p wa -k privileged-actions If the commands do not return output that match the examples, this is a finding. Notes: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.

ℹ️ Check

Verify SLEM 5 generates audit records when successful/unsuccessful attempts to access the "/etc/sudoers" file and files in the "/etc/sudoers.d/" directory with the following command: > sudo auditctl -l | grep -w '/etc/sudoers' -w /etc/sudoers -p wa -k privileged-actions -w /etc/sudoers.d -p wa -k privileged-actions If the commands do not return output that match the examples, this is a finding. Notes: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.

✔️ Fix
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

✔️ Fix

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