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The aliases file must be group-owned by root, sys, bin, or system.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-22438 | GEN004370 | SV-26684r1_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 |
|---|---|
| UNIX SRG | 2013-03-26 |
Details
| Check Text ( C-27706r1_chk ) |
|---|
| Check the group ownership of the /etc/mail/aliases file. Procedure: # ls -lL /etc/mail/aliases If the file is not group-owned by root, sys, bin, or system, this is a finding. |
| Fix Text (F-23923r1_fix) |
|---|
| Change the group owner of the /etc/mail/aliases file. Procedure: # chgrp root /etc/mail/aliases |