Re: How to create (hijacking) secure HTTP sessions?

["Adam Tuliper" <amt () gecko-software com>]

Beginning with ie5, ssl session id is renegotiated every two minutes during 
the same session.
Http session ids based on this method would no longer remain valid then.
In addition, I dont believe this field is readily available to most web 
developers, at least on the ms platform.


----- Original Message ----- 
From: "Jason Muskat" <Jason () TechDude Ca>
To: "Michael Decker" <MDecker () tesis de>; <webappsec () securityfocus com>
Sent: Friday, June 02, 2006 10:18 PM
Subject: Re: How to create (hijacking) secure HTTP sessions?


> Hello,
>
> You have the major parts, especially "HTTP session ID joined with IP and 
> SSL
> session ID'. Most web-apps don't do this, but they should.
>
> To that one should add
>
> A) allow only one active login
>
> Regards,
>
> --
> Jason Muskat  | GCUX - de VE3TSJ
> ____________________________
> TechDude
> e. Jason () TechDude Ca
> m. 416 .414 .9934
>
> http://TechDude.Ca/
>
>
> > From: Michael Decker <MDecker () tesis de>
> > Organization: Tesis SYSware GmbH
> > Date: Thu, 01 Jun 2006 09:13:50 +0200
> > To: <webappsec () securityfocus com>
> > Subject: How to create (hijacking) secure HTTP sessions?
> >
> > Hi!
> >
> > I tried to figure out, how to create HTTP session, that are not so easy
> > to hijack.
> >
> > So I think about that mechanisms:
> >
> > * Using HTTPs
> > * Randomize HTTP session IDs
> > * Only create HTTP session ID after login
> > * HTTP session ID joined with IP and SSL session ID
> > * Block all session ID usings, that do'nt match IP and SSL session ID
> > * Set HTTP session timeout
> > * Expire HTTP session after logout
> >
> > Is that all? Is there any mechanism, that isn't a good idea?
> >
> > Bye,
> > Michael
> >
> > --
> > Michael Decker                      Michael.Decker () tesis de
> > TESIS SYSware GmbH                      http://www.tesis.de
> > Baierbrunnerstr. 15 * 81379 Muenchen * Tel. +49 89 747377-0
> >
> >
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suite, and the only solution to provide comprehensive and consolidated
remediation task lists at every level of the application. See for
yourself.
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