1.214 ALMA-09-027080

Information

AlmaLinux OS 9 must mount /tmp with the nosuid option.

GROUP ID: V-269319
RULE ID: SV-269319r1050201

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

Modify "/etc/fstab" to use the "nosuid" option on the "/tmp" directory.

See Also

https://workbench.cisecurity.org/benchmarks/27039