kinit issue

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kinit issue

prashant  sodhiya
  In MIT kerberos  a "kinit" creates  a credential file in /tmp, which is a world-writable directory.

$ ls  -l  /
        drwxrwxrwt   9 bin      bin            3584 Aug 30 15:07 tmp

I feel it can lead to Denial of Service attack if some other user can create a credential file as that of a valid kerberos user.
Is it  true in MIT kerberos?.How it handled in MIT Kerberos?
Pls give some insights into it.

thnx n regards
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