Details

The noexec mount option specifies that the filesystem cannot contain executable binaries.

*Rationale*

Since the /tmp filesystem is only intended for temporary file storage, set this option to

ensure that users cannot run executable binaries from /tmp.

Solution

Edit the /etc/fstab file and add noexec to the fourth field (mounting options). See the
fstab(5) manual page for more information.# mount -o remount,noexec /tmp

Supportive Information

The following resource is also helpful.

• https://workbench.cisecurity.org/files/91

This control applies to the following type of system Unix.

References

• CSCv6|3.1

Source

• Tenable.com/audits