The SSH public host key files must have mode 0644 or less permissive.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-22471 | GEN005522 | SV-37844r1_rule | ECLP-1 | Medium |
| Description |
|---|
| If a public host key file is modified by an unauthorized user, the SSH service may be compromised. |
| STIG | Date |
|---|---|
| Red Hat Enterprise Linux 5 Security Technical Implementation Guide | 2017-03-01 |
Details
| Check Text ( C-37042r1_chk ) |
|---|
| Check the permissions for SSH public host key files. # ls -lL /etc/ssh/*key.pub If any file has a mode more permissive than 0644, this is a finding. |
| Fix Text (F-32310r1_fix) |
|---|
| Change the permissions for the SSH public host key files. # chmod 0644 /etc/ssh/*key.pub |