Title

AIX must provide xlock command in the CDE environment to let users retain their sessions lock until users are reauthenticated. (Cat II impact)

Discussion

All systems are vulnerable if terminals are left logged in and unattended. Leaving system terminals unsecure poses a potential security hazard. If the interface is AIXwindows (CDE), use the xlock command to lock the sessions.

Check Content

If AIX CDE (X11) is not used, this is Not Applicable. Check the system to determine if "X11.apps.clients" is installed: # lslpp -L X11.apps.clients If the "X11.apps.clients" fileset is not installed, this is a finding. Check if "xlock" command exists 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/X11/xlock" exists, this is a finding.

Fix Text

Install "X11.apps.clients" fileset from the AIX DVD Volume 1 using the following command (assuming that the DVD is mounted to/dev/cd0): # installp -aXYgd /dev/cd0 -e /tmp/install.log X11.apps.clients

Additional Identifiers

Rule ID: SV-215188r958400_rule

Vulnerability ID: V-215188

Group Title: SRG-OS-000028-GPOS-00009

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.