mount your /tmp partition with the noexec,nosuid options, and mount the /home partition with the nosuid option.

t install time, the easiest thing to do is to mount your /tmp partition with the noexec,nosuid options, and mount the /home partition with the nosuid option. This is done in your /etc/fstab and requires those paths to exist as partitions, and not just as subdirectories of /. If you’re unsure, type:

mount

To get a listing of your partitions and their current mounting options. Use google for more information on these mounting options. Be very careful when editing your /etc/fstab, as any errors could prevent your system from starting up. Note that you must not have “nosuid,noexec” for / or /usr, as those partitions have suid binaries normally (su, passwd, etc).

Edit the fstab file vi /etc/fstab and change it depending on your needs. For example:

/dev/sda11 /tmp ext2 defaults 1 2
/dev/sda6 /home ext2 defaults 1 2

To read:

/dev/sda11 /tmp ext2 defaults,rw,nosuid,nodev,noexec 1 2
/dev/sda6 /home ext2 defaults,rw,nosuid,nodev 1 2

nosuid, Meaning do not allow set-user-identifier or set-group-identifier bits to take effect, nodev, do not interpret character or block special devices on this file system partition, noexec, do not allow execution of any binaries on the mounted file system.

One Response to “mount /tmp partition with the noexec,nosuid options”

  1. 2garnishon 12 Jan 2022 at 10:48 pm

    3gymnastics…

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