Binary Expressions

This insecurity warning occurs due to the root user’s root path is included in the environment variable PATH. The root’s path should never contain “.” as this is a security risk. For example, if the root’s path included “.” and a user happen to create a file that was named ls but contained a command to remove the $HOME the root’s home directory would be deleted.

The solution to the matter is to edit the root’s /root/.profile and remove “.” from the PATH environment variable.

Example
Current environment variable PATH:
PATH=$HOME/bin:/bin:/sbin:/usr/bin:/usr/X11R6/bin:/usr/local/bin:/usr/local/sbin:.

Remove “:.”, which would now look like this:
PATH=$HOME/bin:/bin:/sbin:/usr/bin:/usr/X11R6/bin:/usr/local/bin:/usr/local/sbin