AIX must be configured to allow users to directly initiate a session lock for all connection types.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-91235	AIX7-00-001100	SV-101335r1_rule		Medium

Description
A session lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not want to log out because of the temporary nature of the absence. The session lock is implemented at the point where session activity can be determined. Rather than be forced to wait for a period of time to expire before the user session can be locked, operating systems need to provide users with the ability to manually invoke a session lock so users may secure their session should the need arise for them to temporarily vacate the immediate physical vicinity.

Description

A session lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not want to log out because of the temporary nature of the absence. The session lock is implemented at the point where session activity can be determined. Rather than be forced to wait for a period of time to expire before the user session can be locked, operating systems need to provide users with the ability to manually invoke a session lock so users may secure their session should the need arise for them to temporarily vacate the immediate physical vicinity.

STIG	Date
IBM AIX 7.x Security Technical Implementation Guide	2020-02-24

Details

Check Text ( C-90391r1_chk )
Check if the "lock" command exists by using the following command: # ls /usr/bin/lock The above command should display the following: /usr/bin/lock If the above command does not show that "/usr/bin/lock" exists, this is a finding. Check if the "xlock" command exists by using the following command: # ls /usr/bin/X11/xlock The above command should display the following: /usr/bin/X11/xlock If the above command does not show that "/usr/bin/xlock" exists, this is a finding.

Check Text ( C-90391r1_chk )

Check if the "lock" command exists by using the following command:
# ls /usr/bin/lock

The above command should display the following:
/usr/bin/lock

If the above command does not show that "/usr/bin/lock" exists, this is a finding.

Check if the "xlock" command exists by using the following command:
# ls /usr/bin/X11/xlock

The above command should display the following:
/usr/bin/X11/xlock

If the above command does not show that "/usr/bin/xlock" exists, this is a finding.

Fix Text (F-97435r1_fix)
Install, or re-install, bos.rte.security fileset from the AIX DVD Volume 1 using the following command (assuming that the DVD device is /dev/cd0): # installp -aXYgd /dev/cd0 -e /tmp/install.log bos.rte.security