[Solved] Warnings at enabling UFW Firewall

[Allard Pruim]

This day I decided to install Linux Mint Debian Edition and it works fine for so for. However when I enabled the UFW Firewall it came with some warnings.

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WARN: /etc is group writable!
WARN: /lib is group writable!

Should I be considered about these warnings?

Greetings,
Allard

[karlchen]

Hello, Allard.

It is just a warning that 2 system folders grant write permissions not only to the owner of the folders, but to his whole group, too. I do not know whether this is the default on LMDE, but on Mint 13 the mentioned folder privileges are these:

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drwxr-xr-x 148 root root 12288 Mär 20 23:20 etc
drwxr-xr-x  22 root root  4096 Jan 23 20:29 lib

Owner: root, group: root (as a matter of fact user root will be the only member of the root group, if not I'd check who managed to join the root group)
Owner root has got all access rights on the folders.
Group and others have got read and execute permissions. (Note: execute permission on a folder means the right to list the folder content)
You might revoke write permissions on the folders /etc and /lib from the group root.

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sudo chmod g-w /etc /lib

Kind regards,
Karl

[Allard Pruim]

Well I didn't changed the permissions of the folders so it could be that this normal behavior. I did do a Google search on the errors and found someone who has the same errors.
http://blog.linuxmint.com/?p=2571

Post:

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François Blais Says:
February 23rd, 2014 at 2:07 pm

Installed yesterday with Cinnamon 64 bits.
Then installed the XFCE desktop. (sorry but I don’t like Cinnamon and MATE)
Getting this in a terminal:
francois@francoix ~ $ sudo ufw status
[sudo] password for francois:
WARN: /etc is group writable!
WARN: /lib is group writable!
Status: active

What about those warnings?

Thanks!
François

Edit: I applied your command, now I don't get this warnings anymore. Thanks for the help.

Greetings,
Allard