Re: Core dumps and being root
Alan Cox (alan@lxorguk.ukuu.org.uk)
Tue, 28 Jul 1998 00:11:13 +0100 (BST)
> Doesn't this open a huge security hole? Right now, a user can do the
> following:
>
> ln -s some_other_file core
> ./command_that_dumps_core
>
> and get a core dump in some_other_file.
>
> Now, suppose root can dump core. Then if there is a link from core to, say,
> /etc/passwd, strategically located, and root dumps core in that directory...
>
> I don't think there is a problem if root core dumps were always placed in
> /root/core, or some other "safe" location. But not the current directory.
Core dumps shouldnt follow symbolic links is a completely seperate issue
and just as relevant for non setuid programs. Think about /tmp/core
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