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AIX SSH daemon must perform strict mode checking of home directory configuration files.


Overview

Finding ID Version Rule ID IA Controls Severity
V-215299 AIX7-00-002116 SV-215299r508663_rule Medium
Description
If other users have access to modify user-specific SSH configuration files, they may be able to log into the system as another user.
STIG Date
IBM AIX 7.x Security Technical Implementation Guide 2023-08-23

Details

Check Text ( C-16497r294348_chk )
Check the SSH daemon configuration for the "StrictModes" setting using command:

# grep -i StrictModes /etc/ssh/sshd_config | grep -v '^#'
StrictModes yes

If the setting is missing or is set to "no", this is a finding.
Fix Text (F-16495r294349_fix)
Edit the "/etc/sshd/sshd_config" file and add or change the "StrictModes" setting to "yes".

Restart the SSH daemon:
# stopsrc -s sshd
# startsrc -s sshd