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-215414r991589_rule | CCI-000366 | 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 | 2024-08-16 | |||
Details
Check Text (C-215414r991589_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.