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The alias file must not have an extended ACL.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-22439 | GEN004390 M6 | SV-38131r1_rule | ECLP-1 | Medium |
| Description |
|---|
| Excessive permissions on the aliases file may permit unauthorized modification. If the alias file is modified by an unauthorized user, they may modify the file to run malicious code or redirect email. |
| STIG | Date |
|---|---|
| MAC OSX 10.6 Workstation Security Technical Implementation Guide Draft | 2013-01-10 |
Details
| Check Text ( C-37668r1_chk ) |
|---|
| Open a terminal session and enter the following command to view the /etc/aliases file extended ACLs. ls -lL /etc/aliases If the permissions include a '+', the file has an extended ACL, this is a finding. |
| Fix Text (F-32908r1_fix) |
|---|
| Open a terminal session and enter the following command to remove the extended ACLs. chmod -N /etc/aliases |