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OL 8 must prevent files with the setuid and setgid bit set from being executed on the /boot directory.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-248617 | OL08-00-010571 | SV-248617r779417_rule | Medium |
| Description |
|---|
| The "nosuid" mount option causes the system not to execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access. |
| STIG | Date |
|---|---|
| Oracle Linux 8 Security Technical Implementation Guide | 2023-03-06 |
Details
| Check Text ( C-52051r779415_chk ) |
|---|
| For systems that use UEFI, this is Not Applicable. Verify the /boot directory is mounted with the "nosuid" option with the following command: $ sudo mount | grep '\s/boot\s' /dev/sda1 on /boot type xfs (rw,nosuid,relatime,seclabe,attr2,inode64,noquota) If the /boot file system does not have the "nosuid" option set, this is a finding. |
| Fix Text (F-52005r779416_fix) |
|---|
| Configure the "/etc/fstab" to use the "nosuid" option on the /boot directory. |