On Wed, Oct 02, 2002 at 05:38:33AM +0000, Kalinga wrote:
> I could not login to my server using telnet. When I trace down the
> problem, I found the 0 byte size and 744 permition of /bin/login. 
> 
> I found follwing message, when I tried to do rm, mv and chmod
> commands. I am login as root. 
> 
> [root@dbserver1 root]# ls -l /bin/login
> -rw-r--r--    1 root     root            0 Sep 20 02:54 /bin/login
> 
> [root@dbserver1 root]# chmod 755 /bin/login
> chmod: changing permissions of `/bin/login': Operation not permitted
> 
> [root@dbserver1 root]# rm /bin/login
> rm: remove write-protected file `/bin/login'? y
> rm: cannot unlink `/bin/login': Operation not permitted

Try:

$ lsattr /bin/login
-------------- /bin/login

It should look just like that. If not, you've been cracked in all
likelihood, and reinstalling is the only way out. Are all your
packages up to date?

-- 
Hal Burgiss
 



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