The Ubuntu operating system must generate audit records for the use and modification of the lastlog file.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-238287	SRG-OS-000064-GPOS-00033	UBTU-20-010171	SV-238287r958446_rule	2025-03-03	2

Description
Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit records can be generated from various components within the information system (e.g., module or policy filter). Satisfies: SRG-OS-000064-GPOS-00033, SRG-OS-000470-GPOS-00214, SRG-OS-000473-GPOS-00218

Description

Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit records can be generated from various components within the information system (e.g., module or policy filter). Satisfies: SRG-OS-000064-GPOS-00033, SRG-OS-000470-GPOS-00214, SRG-OS-000473-GPOS-00218

ℹ️ Check
Verify the Ubuntu operating system generates an audit record when successful/unsuccessful modifications to the "lastlog" file occur. Check the currently configured audit rules with the following command: $ sudo auditctl -l \| grep lastlog -w /var/log/lastlog -p wa -k logins If the command does not return a line that matches the example or the line is commented out, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier, and the string after it does not need to match the example output above.

ℹ️ Check

Verify the Ubuntu operating system generates an audit record when successful/unsuccessful modifications to the "lastlog" file occur. Check the currently configured audit rules with the following command: $ sudo auditctl -l | grep lastlog -w /var/log/lastlog -p wa -k logins If the command does not return a line that matches the example or the line is commented out, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier, and the string after it does not need to match the example output above.

✔️ Fix
Configure the audit system to generate an audit event for any successful/unsuccessful modifications to the "lastlog" file. Add or update the following rules in the "/etc/audit/rules.d/stig.rules" file: -w /var/log/lastlog -p wa -k logins To reload the rules file, issue the following command: $ sudo augenrules --load