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The SMTP service HELP command must not be enabled.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-12006 | GEN004540 | SV-35059r2_rule | Medium |
| Description |
|---|
| The HELP command should be disabled to mask version information. The version of the SMTP service software could be used by attackers to target vulnerabilities present in specific software versions. |
| STIG | Date |
|---|---|
| HP-UX 11.31 Security Technical Implementation Guide | 2017-12-08 |
Details
| Check Text ( C-36569r2_chk ) |
|---|
| Verify that the Help command is disabled in Sendmail: # ls -al /etc/mail/helpfile If the file does not exist, this is not a finding. If the help file does exist, verify that the file is empty: # cat /etc/mail/helpfile If the help file is not empty, this is a finding. |
| Fix Text (F-11266r3_fix) |
|---|
| To disable the SMTP HELP command, remove or empty the Sendmail help file: /etc/mail/helpfile. |