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1.1.2.3.3 Ensure nosuid option set on /home partition

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Information

The nosuid mount option specifies that the filesystem cannot contain setuid files.

Since the /home filesystem is only intended for user file storage, set this option to ensure that users cannot create setuid files in /home.

Solution

- IF - a separate partition exists for /home.

Edit the /etc/fstab file and add nosuid to the fourth field (mounting options) for the /home partition.

Example:

<device> /home <fstype> defaults,rw,nosuid,nodev,noexec,relatime 0 0

Run the following command to remount /home with the configured options:

# mount -o remount /home

See Also

https://workbench.cisecurity.org/benchmarks/18211

Item Details

References: CSCv7|14.6

Plugin: Unix

Control ID: 796c60d03d9dde523511ef74ab5152d62b2eb1a8b49677729c21115e1f2a2c8b