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The sendmail server must have the debug feature disabled on AIX systems.


Overview

Finding ID Version Rule ID IA Controls Severity
V-215414 AIX7-00-003116 SV-215414r508663_rule Medium
Description
Debug mode is a feature present in older versions of Sendmail which, if not disabled, may allow an attacker to gain access to a system through the Sendmail service.
STIG Date
IBM AIX 7.x Security Technical Implementation Guide 2021-11-19

Details

Check Text ( C-16612r294693_chk )
Check the version of "sendmail" installed on the system using:
# echo \$Z | /usr/sbin/sendmail -bt -d0

The above command should yield the following output:
Version AIX7.2/8.14.4
Compiled with: DNSMAP LDAPMAP LDAP_REFERRALS LOG MAP_REGEX MATCHGECOS
MILTER MIME7TO8 MIME8TO7 NAMED_BIND NDBM NETINET NETINET6
NETUNIX NEWDB NIS NISPLUS PIPELINING SCANF USERDB USE_LDAP_INIT
USE_TTYPATH XDEBUG

If the "sendmail" reported version is less than "8.6", this is a finding.
Fix Text (F-16610r294694_fix)
Obtain and install a more recent version of "Sendmail", which does not implement the DEBUG feature.