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I am trying to secure a linux Ubuntu box and I am no expert. I am following guidance available on the net.
Section 15.2 discusses world-writable files. The following command
find / -type f -perm -o+w -exec ls -l {} \;
returns a long list of files all located under /proc.
My question is: is this a good or a bad thing regarding security? Should I do something about these files?
Thanks!
The short answer is there's nothing you can do about it, so don't worry about it.
Files under /proc are generated automatically, and aren't "real" files. They are pointers to various OS settings and resources. You'll probably notice they all have a length of 0 as well.
You can safely ignore these.
In your case, don't care about files in /proc and /sys.
find / -type f -perm -o+w -lswill produce mostly the same output but in a shorter way. I hope you appreciate it. :)