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The aliases file must be group-owned by root, sys, smmsp, or bin.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-22438 | GEN004370 | SV-37458r1_rule | ECLP-1 | Medium |
| Description |
|---|
| If the alias file is not group-owned by root or a system group, an unauthorized user may modify the file to add aliases to run malicious code or redirect email. |
| STIG | Date |
|---|---|
| Solaris 9 SPARC Security Technical Implementation Guide | 2012-05-25 |
Details
| Check Text ( C-36126r1_chk ) |
|---|
| Find the alias files on the system. Procedure: # egrep '^O(A| AliasFile)' /etc/mail/sendmail.cf If the "alias file" is an NIS or LDAP map, this check is not applicable. The default location is /etc/mail/aliases. Check the group ownership of the alias file and the hashed version of it used by sendmail. Procedure: # ls -lL /etc/mail/aliases /etc/mail/aliases.db If the file is not group-owned by root, sys, smmsp, or bin, this is a finding. |
| Fix Text (F-34506r1_fix) |
|---|
| Change the group owner of the /etc/mail/aliases files. Procedure: # chgrp bin /etc/mail/aliases # chgrp smmsp /etc/mail/aliases.db |