If csh/tcsh shell is used, AIX must display logout messages.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
low	V-215311	SRG-OS-000281-GPOS-00111	AIX7-00-002130	SV-215311r958640_rule	2024-08-16	3

Description
If a user cannot explicitly end an operating system session, the session may remain open and be exploited by an attacker; this is referred to as a zombie session. Users need to be aware of whether or not the session has been terminated. Information resources to which users gain access via authentication include, for example, local workstations and remote services. Logoff messages can be displayed after authenticated sessions have been terminated. However, for some types of interactive sessions, including, for example, remote login, information systems typically send logoff messages as final messages prior to terminating sessions.

Description

If a user cannot explicitly end an operating system session, the session may remain open and be exploited by an attacker; this is referred to as a zombie session. Users need to be aware of whether or not the session has been terminated. Information resources to which users gain access via authentication include, for example, local workstations and remote services. Logoff messages can be displayed after authenticated sessions have been terminated. However, for some types of interactive sessions, including, for example, remote login, information systems typically send logoff messages as final messages prior to terminating sessions.

ℹ️ Check
Check if users have their "$HOME/.logout" files. If a user does not have their ".logout" file, or the ".logout" file does not display a logout message, this is a finding.

✔️ Fix
Create the ".logout" file if it does not exist. Add the following two lines to ".logout" to display a logout message and sleep for "5" seconds: echo "You are being disconnected." sleep 5