ufw - WARN: / is world writable!

It should never happen. Well, unless, you specifically changed the permissions with administrative privileges ('sudo chmod'). Can you show your /etc/fstab?

With that command you change all permissions for all users.
The specific command to fix this specific issue is:
$ sudo chmod o-w /

(this only removes writable permission to Others/world)

El 23/10/19 a les 21:34, name at domain ha escrit:
> Hello,
>
> I do not speak English so I write this with a web translator.
>
> the same consultation in Spanish:
>
> https://trisquel.info/en/forum/gufw-warn-world-writable
>
>
>
> I have done a multiple installation with several distributions based in
> debian and in ubuntu and with all the same happens to me:
>
> on having installed the gufw, the following alarm throws me and the
> firewall does not work:
>
> WARN: / is world writable! | WARN: / is group writable! |
>
> since I could have seen in Internet this warning it appears when the
> permission of the directory root / is 777, and gets ready changing the
> permissions to 755
>
> "sudo chmod 755 /".
>
> It seems that this arranges it but I would like knowing why it happens.
> In other computers, also with multiple starter it has never happened to me.
> The only difference is that in this occasion the starter is UEFI.
> But as it happens to me in all the distributions I wonder I will not be
> doing something wrong in the installation process.
>
> Is this normal?
>
> Thanks.

Thanks

# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
#
# / was on /dev/sda4 during installation
UUID=75178c0f-25b4-494b-9355-18d4754458b1 / ext4 errors=remount-ro 0 1
# /boot/efi was on /dev/sda1 during installation
UUID=C267-B886 /boot/efi vfat umask=0077 0 1
# swap was on /dev/sda2 during installation
UUID=b717ec49-d3e8-4c30-91dd-5aef78d052e2 none swap sw 0 0