On Tue, 2002-07-30 at 18:10, Gerry Doris wrote:
> 
> I continue to see these claims that sendmail is insecure.  However, I've
> yet to see anyone actually back this up.  Would you please give me the
> details of why sendmail is insecure.

It's install SUID root (may not be true in future versions, Red Hat
seems to have a solution to that particular problem)
It's one, very large, very complex application.

Without even beginning to get into other problems, the two above are
enough that anyone with even a little security background will
acknowledge that sendmail is not, and can not be made, secure.  SUID
applications should be as small as possible to accomplish their task:
less code means fewer problems to exploit.  Any other common MTA makes
minimal use of root privileges and SUID binaries.

Sendmail has a very long history of root exploits, both local and
remote.  It shouldn't be hard to find them.  Just look at
www.sendmail.org.





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