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The alias file must be owned by root.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-831 | GEN004360 | SV-831r2_rule | ECLP-1 | Medium |
| Description |
|---|
| If the alias file is not owned by root, 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-614r2_chk ) |
|---|
| Find the aliases file on the system. Procedure: # find / -name aliases -depth -print Check the ownership of the alias file. Procedure: # ls -lL If the file is not owned by root, this is a finding. |
| Fix Text (F-985r2_fix) |
|---|
| Change the owner of the /etc/mail/aliases file (or equivalent, such as /usr/lib/aliases) to root. Procedure: # chown root /etc/mail/aliases |