1.216 OL09-00-002042

Information

OL 9 must mount /dev/shm with the nosuid option.

GROUP ID: V-271652
RULE ID: SV-271652r1094966

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 OL 9 to mount /dev/shm with the nosuid option.

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

See Also

https://workbench.cisecurity.org/benchmarks/27024