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

The AIX DHCP client must not send dynamic DNS updates.

DISA Rule

SV-215427r508663_rule

Vulnerability Number

V-215427

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

AIX7-00-003132

Severity

CAT II

CCI(s)

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

Weight

10

Fix Recommendation

Configure the system's DHCP client to not send dynamic DNS updates.

Remove or comment-out "updateDNS" lines from the "/etc/dhcpcd.ini" and "/etc/dhcpc.opt" files.

Check Contents

If AIX does not use DHCP client, this is Not Applicable.

Determine if the system's DHCP client is configured to send dynamic DNS updates:
# grep "^updateDNS" /etc/dhcpc.opt /etc/dhcpcd.ini

If any lines are returned, this is a finding.

Vulnerability Number

V-215427

Documentable

False

Rule Version

AIX7-00-003132

Severity Override Guidance

If AIX does not use DHCP client, this is Not Applicable.

Determine if the system's DHCP client is configured to send dynamic DNS updates:
# grep "^updateDNS" /etc/dhcpc.opt /etc/dhcpcd.ini

If any lines are returned, this is a finding.

Check Content Reference

M

Target Key

4012

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