AIX must produce audit records containing the full-text recording of privileged commands.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-215240	AIX7-00-002006	SV-215240r508663_rule		Medium

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 commands. The organization must maintain audit trails in sufficient detail to reconstruct events to determine the cause and impact of compromise.

STIG	Date
IBM AIX 7.x Security Technical Implementation Guide	2021-06-16

Details

Check Text ( C-16438r294171_chk )
Verify the audit daemon is configured for full-text recording of privileged commands: The log file can be set by the "trail" variable in /etc/security/audit/config. # grep trail /etc/security/audit/config trail = /audit/trail Note: The default log file is /audit/trail. Use the following command to display the audit events: # /usr/sbin/auditpr -i -v event login status time command wpar name --------------- -------- ----------- ------------------------ ------------------ ------------- ------------------------- S_PASSWD_READ root OK Sat Aug 26 19:35:00 2017 cron Global audit object read event detected /etc/security/passwd S_PASSWD_READ root OK Sat Aug 26 19:35:00 2017 cron Global audit object read event detected /etc/security/passwd CRON_Start root OK Sat Aug 26 19:35:00 2017 cron Global event = start cron job cmd = /usr/sbin/dumpctrl -k >/dev/null 2>/dev/nul l time = Sat Aug 26 19:35:00 2017 FS_Chdir root OK Sat Aug 26 19:35:00 2017 cron Global change current directory to: / If the full-text recording of privileged command is not displayed, this is a finding. More information on the command options used above: - v detailed information for the event

Check Text ( C-16438r294171_chk )

Verify the audit daemon is configured for full-text recording of privileged commands:

The log file can be set by the "trail" variable in /etc/security/audit/config.

# grep trail /etc/security/audit/config
trail = /audit/trail

Note: The default log file is /audit/trail.

Use the following command to display the audit events:

# /usr/sbin/auditpr -i -v

event login status time command
wpar name
--------------- -------- ----------- ------------------------ ------------------
------------- -------------------------
S_PASSWD_READ root OK Sat Aug 26 19:35:00 2017 cron
Global
audit object read event detected /etc/security/passwd
S_PASSWD_READ root OK Sat Aug 26 19:35:00 2017 cron
Global
audit object read event detected /etc/security/passwd
CRON_Start root OK Sat Aug 26 19:35:00 2017 cron
Global
event = start cron job cmd = /usr/sbin/dumpctrl -k >/dev/null 2>/dev/nul
l time = Sat Aug 26 19:35:00 2017
FS_Chdir root OK Sat Aug 26 19:35:00 2017 cron
Global
change current directory to: /

If the full-text recording of privileged command is not displayed, this is a finding.

More information on the command options used above:
- v detailed information for the event

Fix Text (F-16436r294172_fix)
Reset the audit system with the following command: # /usr/sbin/audit shutdown Start the audit system with the following command: # /usr/sbin/audit start