Apache modules compatible with kerberos in 1.7b

Jeffrey Hutzelman jhutz at cmu.edu
Tue Mar 23 22:09:54 EST 2004



On Tuesday, March 23, 2004 21:49:48 -0500 Wyllys Ingersoll 
<wyllys.ingersoll at sun.com> wrote:

> The "negotiateauth" extension in Mozilla 1.7b uses GSSAPI
> for authentication in the same manner that Microsoft IE and IIS
> use it.  By default, Mozilla 1.7b will *NOT*
> respond to server requests for "Negotiate" authentication
> unless the URL is "https://".  However, This can be overridden
> by modifying a couple of configuration options:

Careful here...

The "negotiate" method authenticates the client but does not provide 
confidentiality or integrity protection for the transferred data.  Even 
when TLS is used, the authentication context is not bound to the channel in 
any way.  Thus, unless you use TLS _and_ verify the server's certificate, 
an attacker can easily hijack your "authenticated" connection.

-- Jeffrey T. Hutzelman (N3NHS) <jhutz+ at cmu.edu>
   Sr. Research Systems Programmer
   School of Computer Science - Research Computing Facility
   Carnegie Mellon University - Pittsburgh, PA



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