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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 | SV-38809r1_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 e-mail. |
| STIG | Date |
|---|---|
| AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE | 2017-12-08 |
Details
| Check Text ( C-36882r1_chk ) |
|---|
| Check the permissions of the /etc/mail/aliases file. #aclget /etc/mail/aliases Check if extended permissions are disabled. If extended permissions are not disabled, this is a finding. |
| Fix Text (F-31896r1_fix) |
|---|
| Remove the extended ACL from the alias file and disable extended permissions. #acledit /etc/mail/aliases |