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The .Xauthority files must not have extended ACLs.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-22446 | GEN005190 | SV-38814r1_rule | ECLP-1 | Medium |
| Description |
|---|
| .Xauthority files ensure the user is authorized to access that specific X Windows host. Extended ACLs may permit unauthorized modification of these files, which could lead to Denial of Service to authorized access or allow unauthorized access to be obtained. |
| STIG | Date |
|---|---|
| AIX 5.3 Security Technical Implementation Guide | 2012-05-25 |
Details
| Check Text ( C-37054r1_chk ) |
|---|
| Get a list of (non-system account) users and the associated home directories. # cat /etc/passwd | cut -f 1,6 -d ":" Check the file permissions for the user .Xauthority files. #aclget .Xauthority Check if extended permissions are disabled. If extended permissions are not disabled, this is a finding. |
| Fix Text (F-32322r1_fix) |
|---|
| Remove the extended ACL from the .Xauthority file(s) and disable extended permissions. #acledit .Xauthority |