STIGQter: STIG Summary: IBM AIX 7.x Security Technical Implementation Guide Version: 2 Release: 2 Benchmark Date: 23 Apr 2021:

AIX must turn off X11 forwarding for the SSH daemon.

DISA Rule

SV-215300r508663_rule

Vulnerability Number

V-215300

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

AIX7-00-002117

Severity

CAT II

CCI(s)

• CCI-000366 - The organization implements the security configuration settings.

Weight

10

Fix Recommendation

Edit the "/etc/sshd/sshd_config" file to add the following line and save the change:
X11Forwarding no

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

Check Contents

If X11 forwarding has been authorized for use, this is Not Applicable.

Check the SSH daemon configuration for the "X11Forwarding" directive using command:

# grep -i X11Forwarding /etc/ssh/sshd_config | grep -v '^#'
X11Forwarding no

If the setting is not present or the setting is "yes", this is a finding.

Vulnerability Number

V-215300

Documentable

False

Rule Version

AIX7-00-002117

Severity Override Guidance

If X11 forwarding has been authorized for use, this is Not Applicable.

Check the SSH daemon configuration for the "X11Forwarding" directive using command:

# grep -i X11Forwarding /etc/ssh/sshd_config | grep -v '^#'
X11Forwarding no

If the setting is not present or the setting is "yes", this is a finding.

Check Content Reference

M

Target Key

4012

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