Changes are coming to https://stigviewer.com.
Take our survey to help us understand your usage and how we can better serve you in the future.
Take Survey
The SMTP service's SMTP greeting must not provide version information.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-4384 | GEN004560 | SV-4384r2_rule | ECSC-1 | Low |
| Description |
|---|
| The version of the SMTP service can be used by attackers to plan an attack based on vulnerabilities present in the specific version. |
| STIG | Date |
|---|---|
| VMware ESX 3 Server | 2016-05-13 |
Details
| Check Text ( C-8267r2_chk ) |
|---|
| Check for the Sendmail version being displayed in the greeting. # telnet localhost 25 If a version number is displayed, this is a finding. |
| Fix Text (F-4295r2_fix) |
|---|
| 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 |