On 01/03/2003 07:57:08 PM Edmund Lian wrote:

>There is one scenario that is a hijack situation though... suppose you
design a
>site that allows users to post URLs that other users can click on. To
hijack
>sessions, a rogue user only has to post a URL that takes unsuspecting
users to
>the other site. The victim(s) session ID is now available at the other
site as
>part of the HTTP Referer header.

Oh yes, there is another even simpler way to get at a URL-encoded session
ID... the rogue user only has to post an image with a href pointing back to
their computer. This way, a victim doesn't even have to click on a URL to
be exposed, he/she only has to view a message with the externally-sourced
image.

...Edmund.



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