The Sendmail service must not have the wizard backdoor active.

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The Sendmail service must not have the wizard backdoor active.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-227850	GEN004700	SV-227850r603266_rule		Low

Description
Very old installations of the Sendmail mailing system contained a feature whereby a remote user connecting to the SMTP port can enter the WIZ command and be given an interactive shell with root privileges.

STIG	Date
Solaris 10 X86 Security Technical Implementation Guide	2020-12-04

Details

Check Text ( C-36475r603028_chk )
Locate the sendmail.cf configuration file and check for wiz configuration. Procedure: # find / -name sendmail.cf -print # grep -v "^#" \|grep -i wiz If an entry is found for wiz, this is a finding.

Fix Text (F-36439r603029_fix)
If the WIZ command is enabled on Sendmail, it should be disabled by adding this line to the sendmail.cf configuration file (it must be typed in uppercase). OW* For the change to take effect, kill the Sendmail process, refreeze the sendmail.cf file, and restart the Sendmail process.