Arch Linux

whahn1983

Member

Registered: 2013-05-23

Posts: 59

[SOLVED] World Writable Files

I did a search for all world writable files and noticed a good amount in /proc, /dev, and /run, as well as /var/spool/postfix.  Can I do a mass find and remove the world write or will this break the system.  Are these supposed to be world writable?

Last edited by whahn1983 (2015-01-29 15:28:31)

drcouzelis

Member

From: Connecticut, USA

Registered: 2009-11-09

Posts: 4,092

Website

Re: [SOLVED] World Writable Files

What are the files?

Why do you want to delete them?

karol

Archivist

Registered: 2009-05-06

Posts: 25,440

Re: [SOLVED] World Writable Files

/proc is a virtual filesystem, don't touch it.
You should be careful with /dev and /run too https://wiki.archlinux.org/index.php/Ar … ntime_data

whahn1983

Member

Registered: 2013-05-23

Posts: 59

Re: [SOLVED] World Writable Files

Don't want to delete the files, just remove the world writable bit.  How about /var/spool/postfix? Does that need world write? Seems like a potential security issues.

Spider.007

Member

Registered: 2004-06-20

Posts: 1,175

Re: [SOLVED] World Writable Files

I just installed postfix to check; but that directory is not world-writable for me; what does `pacman -Qkk postfix tell you about that specific directory?
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whahn1983

Member

Registered: 2013-05-23

Posts: 59

Re: [SOLVED] World Writable Files

It looks like they are all actually in /var/spool/postfix/private and public and they all have the sticky bit as well.  The pacman output gives warnings for UID mismatch.

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,353

Re: [SOLVED] World Writable Files

What file system are you using on that volume?

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whahn1983

Member

Registered: 2013-05-23

Posts: 59

Re: [SOLVED] World Writable Files

Ext4

ghen

Member

From: Belgium

Registered: 2010-08-31

Posts: 124

Re: [SOLVED] World Writable Files

Don't want to delete the files, just remove the world writable bit.  How about /var/spool/postfix? Does that need world write? Seems like a potential security issues.

Those are sockets (for postfix inter-process communication), not files.  Stay off.

Use find -f to find actual files.

whahn1983

Member

Registered: 2013-05-23

Posts: 59

Re: [SOLVED] World Writable Files

Ah sounds good.  Thank you.