STIGQter STIGQter: STIG Summary: Solaris 10 X86 Security Technical Implementation Guide Version: 1 Release: 26 Benchmark Date: 24 Jan 2020: The SMTP services SMTP greeting must not provide version information.

DISA Rule

SV-42310r1_rule

Vulnerability Number

V-4384

Group Title

GEN004560

Rule Version

GEN004560

Severity

CAT III

CCI(s)

Weight

10

Fix Recommendation

Ensure Sendmail or its equivalent has been configured to mask the version information. If necessary, change the O SmtpGreetingMessage line in the /etc/mail/sendmail.cf file as noted below.
O SmtpGreetingMessage=$j Sendmail $v/$Z; $b
Change it to:
O SmtpGreetingMessage= Mail Server Ready ; $b

Check Contents

Check for the Sendmail version being displayed in the greeting.

# telnet localhost 25

If a version number is displayed, this is a finding.

If telnet is unavailable for testing, check the value of the SmtpGreetingMessage parameter in the sendmail.cf file.

# grep SmtpGreetingMessage /etc/mail/sendmail.cf

If the value of the SmtpGreetingMessage parameter contains the $v or $Z macros, this is a finding.

Vulnerability Number

V-4384

Documentable

False

Rule Version

GEN004560

Severity Override Guidance

Check for the Sendmail version being displayed in the greeting.

# telnet localhost 25

If a version number is displayed, this is a finding.

If telnet is unavailable for testing, check the value of the SmtpGreetingMessage parameter in the sendmail.cf file.

# grep SmtpGreetingMessage /etc/mail/sendmail.cf

If the value of the SmtpGreetingMessage parameter contains the $v or $Z macros, this is a finding.

Check Content Reference

M

Responsibility

System Administrator

Target Key

25

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