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

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-219215	UBTU-18-010203	SV-219215r508662_rule		Medium

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

STIG	Date
Canonical Ubuntu 18.04 LTS Security Technical Implementation Guide	2020-09-10

Details

Check Text ( C-20940r304973_chk )
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.

Check Text ( C-20940r304973_chk )

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 Text (F-20939r304974_fix)
Configure the audit system to generate an audit event for any successful/unsuccessful modifications to the "lastlog" file occur. Add or update the following rules in the "/etc/audit/rules.d/stig.rules" file: -w /var/log/lastlog -p wa -k logins Note: The "root" account must be used to view/edit any files in the /etc/audit/rules.d/ directory. In order to reload the rules file, issue the following command: # sudo augenrules --load

Fix Text (F-20939r304974_fix)

Configure the audit system to generate an audit event for any successful/unsuccessful modifications to the "lastlog" file occur.

Add or update the following rules in the "/etc/audit/rules.d/stig.rules" file:

-w /var/log/lastlog -p wa -k logins

Note:
The "root" account must be used to view/edit any files in the /etc/audit/rules.d/ directory.

In order to reload the rules file, issue the following command:

# sudo augenrules --load