Files executed through a mail aliases file must have mode 0755 or less permissive.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-834 | GEN004420 | SV-45853r2_rule | Medium |
| Description |
|---|
| If a file executed through a mail aliases file has permissions greater than 0755, it can be modified by an unauthorized user and may contain malicious code or instructions potentially compromising the system. |
| STIG | Date |
|---|---|
| SUSE Linux Enterprise Server v11 for System z Security Technical Implementation Guide | 2018-09-19 |
Details
| Check Text ( C-43151r2_chk ) |
|---|
| If the “sendmail” package is not installed, this is not applicable. 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 any file referenced from the aliases file has a mode more permissive than 0755, this is a finding. |
| Fix Text (F-39237r1_fix) |
|---|
| Use the chmod command to change the access permissions for files executed from the alias file. For example: # chmod 0755 filename. |