Systems files should not be world writable in UNIX.

[DharmaRao G]

What are the systems files should not be world writable in UNIX enviorment for security reason?

[George_Dodds]

Try the following to list them.

find / -perm -o+w

[Jozef_Novak]

Yepp,exactly as you say, it is for security reasons. The rationale behind is to prevent malicious code being inserted into executable files.

J.

[Bill Hassell]

There aren't any system (HP-UX) files that should be world-writable. In fact, there should be no world-writable directories except /var/tmp and /tmp. But this bit is only one of several that should be checked, and for HP-UX, the command: swverify will handle this task. It will point out files and directories that do not have correct permissions as well as ownerships.

[avizen9]

Hello dharma
there are various opinion for this,
here is one opinion for your question, check this thread also.

http://forums13.itrc.hp.com/service/forums/questionanswer.do?admit=109447627+1242392242286+28353475&threadId=1337699