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Files executed through a mail aliases file must be group-owned by root, bin, sys, or system, and must reside within a directory group-owned by root, bin, sys, or system.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-22440 | GEN004410 | SV-63719r1_rule | ECLP-1 | Medium |
| Description |
|---|
| If a file executed through a mail aliases file is not group-owned by root or a system group, it may be subject to unauthorized modification. Unauthorized modification of files executed through aliases may allow unauthorized users to attain root privileges. |
| STIG | Date |
|---|---|
| Oracle Linux 5 Security Technical Implementation Guide | 2015-03-26 |
Details
| Check Text ( C-52321r2_chk ) |
|---|
| Examine the contents of the /etc/aliases file. Procedure: # more /etc/aliases Examine the aliases file for any utilized directories or paths. # ls -lL Check the permissions for any paths referenced. If the group owner of any file is not root, bin, sys, or system, this is a finding. |
| Fix Text (F-54331r2_fix) |
|---|
| Change the group ownership of the file referenced from /etc/aliases. Procedure: # chgrp root |