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Remote file systems must be mounted with the nosuid option.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-50847 | OL6-00-000270 | SV-65053r2_rule | Medium |
| Description |
|---|
| NFS mounts should not present suid binaries to users. Only vendor-supplied suid executables should be installed to their default location on the local filesystem. |
| STIG | Date |
|---|---|
| Oracle Linux 6 Security Technical Implementation Guide | 2020-05-15 |
Details
| Check Text ( C-53319r2_chk ) |
|---|
| To verify the "nosuid" option is configured for all NFS mounts, run the following command: $ mount | grep nfs All NFS mounts should show the "nosuid" setting in parentheses, along with other mount options. If the setting does not show, this is a finding. |
| Fix Text (F-55641r1_fix) |
|---|
| Add the "nosuid" option to the fourth column of "/etc/fstab" for the line which controls mounting of any NFS mounts. |