Can't do setuid and file permision denied errors

From: Chris (chrisw_at_lu.csi.com.ph)
Date: 10/29/03 

Date: 28 Oct 2003 17:05:54 -0800

I hope this is the right news group to post my questions,

I'm a newbie with perl scripts and I'm having
problem running my copied script to my server. Can anybody who is
patient enough to help me with my problem?
I have a chpass.pl which is being executed by a change password web
utility page. This script tries to update a password on my linux
server /etc/shadow with a file permision rw------. my chpass.pl was
set to -rwsr-sr-x ,
with this file permission, I'm getting an error: Can't do setuid,
referer: http://.......
When I set the file permision of the chpass.pl to -rwsr-xr-x , I get
the error: file permision denied by the file /etc/shadow..
When I chmod 777 the /etc/shadow then everything works but I'm sure
its not safe to do that.. I cannot figure out how could I make this
work with the original file permission of the files shadow and
chpass.pl unchanged for I knew this was been working before with
another machine with almost a copycat of my server.

PLS..

Thanks...

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