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

AIX must turn off TCP forwarding for the SSH daemon.

DISA Rule

SV-215301r508663_rule

Vulnerability Number

V-215301

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

AIX7-00-002118

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:
AllowTcpForwarding no

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

Check Contents

If TCP forwarding is approved for use by the ISSO, this is not applicable.

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

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

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

Vulnerability Number

V-215301

Documentable

False

Rule Version

AIX7-00-002118

Severity Override Guidance

If TCP forwarding is approved for use by the ISSO, this is not applicable.

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

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