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Files executed through a mail aliases file must be group-owned by root, bin, sys, or other, and must reside within a directory group-owned by root, bin, sys, or other.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-22440 | GEN004410 | SV-38373r1_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 |
|---|---|
| AIX 5.3 Security Technical Implementation Guide | 2012-05-25 |
Details
| Check Text ( C-36561r1_chk ) |
|---|
| Examine the contents of the /etc/mail/aliases file. # cat /etc/mail/aliases | cut -f 2,2 -d ":" | grep "|" For each file referenced, check the group ownership of the file. # ls -lL If the group owner of any file is not root, bin, sys or other, this is a finding. |
| Fix Text (F-31929r1_fix) |
|---|
| Change the group ownership of the file referenced from /etc/mail/aliases. # chgrp root |