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1.306 RHEL-10-700145

Information

RHEL 10 must mount "/dev/shm" with the "nosuid" option.

GROUP ID: V-281237
RULE ID: SV-281237r1166663

The "nosuid" mount option causes the system to not 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 nonprivileged users to attain unauthorized administrative access.

Solution

Configure RHEL 10 to mount "/dev/shm" with the "nosuid" option.

Modify "/etc/fstab" to use the "nosuid" option on the "/dev/shm" file system.

To reload all implicit mount units and update the dependency graph so that new options will apply correctly at next remount, run the following command:

$ sudo systemctl daemon-reload

Use the following command to apply the changes immediately without a reboot:

$ sudo mount -o remount /dev/shm

See Also

https://workbench.cisecurity.org/benchmarks/26403

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-7(2), CAT|II, CCI|CCI-001764, Rule-ID|SV-281237r1166663_rule, STIG-ID|RHEL-10-700145, Vuln-ID|V-281237

Plugin: Unix

Control ID: c394b1612c059e731ebb082582a87df0aaa701af1ddd946b01edd7858d49cf50