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V-215303

CAT II (Medium)

The AIX SSH daemon must be configured to disable user .rhosts files.

Rule ID

SV-215303r991591_rule

STIG

IBM AIX 7.x Security Technical Implementation Guide

Version

V3R2

CCIs

CCI-000366

Discussion

Trust .rhost file means a compromise on one host can allow an attacker to move trivially to other hosts.

Check Content

Check the SSH daemon configuration for allowed ".rhosts" using command: 

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

If no lines are returned, or the returned "IgnoreRhosts" directive is not set to "yes", this is a finding.

Fix Text

Edit "/etc/ssh/sshd_config" and add or update the "IgnoreRhosts " line as:
IgnoreRhosts  yes

Save the change and restart ssh daemon:
# stopsrc -s sshd
# startsrc -s sshd